{
 "name": "FusionBenchmark dataset",
 "attribution": "FusionBenchmark — https://fusionbenchmark.com",
 "licence": "CC-BY-4.0",
 "licenceUrl": "https://creativecommons.org/licenses/by/4.0/",
 "licenceNote": "The compilation, classification and provenance annotations are ours and are CC BY 4.0. Quoted source text remains the property of its publisher and is reproduced as short attributed quotation. Archived third-party pages are NOT redistributed.",
 "schemaVersion": "https://fusionbenchmark.com/schema/v1/fusionbenchmark.schema.json",
 "generatedAt": "2026-08-15T11:33:47.946Z",
 "readThisFirst": {
  "status": "Every measurement carries a status. `achieved` was measured on a shot. `claimed` is reported but not independently established. `planned` is a target and is PERMANENTLY INELIGIBLE for any ranking. `superseded` has been beaten. Treating planned as achieved is the most common error made with data like this.",
  "denominators": "There is no `gain` metric. Fusion gain is meaningless without stating what was counted in — NIF shot N221204 is a target gain of 1.5 and a wall-plug gain of 0.0077, same shot. Gain exists only as gain-target, gain-capsule, gain-plasma, gain-equivalent, gain-engineering and gain-wallplug, each carrying numerator and denominator in the metric registry.",
  "independence": "Source.independence is independent | operator | aggregator | circular | unknown. A company reporting on its own device is `operator`, never `independent`. Repetition is not corroboration.",
  "verification": "verifiedAt on a record means a human opened the source in that run. provenance.verifiedFields lists which specific fields were checked against the archived capture — a blanket verified/unverified flag is coarser than the truth.",
  "missing": "Absence is a finding, not an oversight. Nothing here is imputed to make a record look complete. If a field is missing, our source did not state it."
 },
 "measurements": {
  "achieved": [
   {
    "id": "meas:nif-n221204-gain-target",
    "subject": "facility:nif",
    "subjectName": "National Ignition Facility",
    "subjectSlug": "national-ignition-facility",
    "operator": "Lawrence Livermore National Laboratory",
    "metric": "metric:gain-target",
    "metricLabel": "Q_target",
    "metricFull": "Target gain (Q_target)",
    "denominator": "Laser energy delivered to the target, including hohlraum losses",
    "numerator": "Total fusion energy yield of the implosion",
    "value": 1.5,
    "unit": "1",
    "qualifier": null,
    "date": "2022-12-05",
    "status": "achieved",
    "shotId": "N221204",
    "simulated": false,
    "isGain": true,
    "evidence": {
     "confidence": "high",
     "verified": true,
     "verifiedFields": [],
     "note": "Verified against the peer-reviewed paper. Quoted: \"achieved a target gain Gtarget of 1.5\".",
     "sources": [
      {
       "id": "src:abu-shawareb-2024-prl",
       "title": "Achievement of Target Gain Larger than Unity in an Inertial Fusion Experiment",
       "url": "https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.132.065102",
       "independence": "independent",
       "type": "peer-reviewed"
      },
      {
       "id": "src:llnl-nif-shot",
       "title": "Achieving Fusion Ignition | National Ignition Facility & Photon Science",
       "url": "https://lasers.llnl.gov/science/achieving-fusion-ignition",
       "independence": "operator",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:nif-n221204-yield",
    "subject": "facility:nif",
    "subjectName": "National Ignition Facility",
    "subjectSlug": "national-ignition-facility",
    "operator": "Lawrence Livermore National Laboratory",
    "metric": "metric:fusion-energy-yield",
    "metricLabel": "Fusion energy yield",
    "metricFull": "Fusion energy yield",
    "denominator": null,
    "numerator": null,
    "value": 3.1,
    "unit": "MJ",
    "qualifier": null,
    "date": "2022-12-05",
    "status": "achieved",
    "shotId": "N221204",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": true,
     "verifiedFields": [],
     "note": "Verified against the peer-reviewed paper. Quoted: \"shot N221204, which resulted in 3.1 ± 0.16 MJ of yield\". The previously recorded 3.15 MJ was the widely circulated press figure; the published value is 3.1 ± 0.16 MJ.",
     "sources": [
      {
       "id": "src:abu-shawareb-2024-prl",
       "title": "Achievement of Target Gain Larger than Unity in an Inertial Fusion Experiment",
       "url": "https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.132.065102",
       "independence": "independent",
       "type": "peer-reviewed"
      },
      {
       "id": "src:llnl-nif-shot",
       "title": "Achieving Fusion Ignition | National Ignition Facility & Photon Science",
       "url": "https://lasers.llnl.gov/science/achieving-fusion-ignition",
       "independence": "operator",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:nif-n221204-laser",
    "subject": "facility:nif",
    "subjectName": "National Ignition Facility",
    "subjectSlug": "national-ignition-facility",
    "operator": "Lawrence Livermore National Laboratory",
    "metric": "metric:laser-energy",
    "metricLabel": "Laser energy on target",
    "metricFull": "Laser energy on target",
    "denominator": null,
    "numerator": null,
    "value": 2.05,
    "unit": "MJ",
    "qualifier": null,
    "date": "2022-12-05",
    "status": "achieved",
    "shotId": "N221204",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": true,
     "verifiedFields": [],
     "note": "Verified against the peer-reviewed paper. Quoted: \"2.05 MJ of 351 nm laser light\".",
     "sources": [
      {
       "id": "src:abu-shawareb-2024-prl",
       "title": "Achievement of Target Gain Larger than Unity in an Inertial Fusion Experiment",
       "url": "https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.132.065102",
       "independence": "independent",
       "type": "peer-reviewed"
      },
      {
       "id": "src:llnl-nif-shot",
       "title": "Achieving Fusion Ignition | National Ignition Facility & Photon Science",
       "url": "https://lasers.llnl.gov/science/achieving-fusion-ignition",
       "independence": "operator",
       "type": "official"
      }
     ]
    }
   }
  ],
  "claimed": [
   {
    "id": "meas:aditya-u-major-radius",
    "subject": "facility:aditya-u",
    "subjectName": "ADITYA-U",
    "subjectSlug": "aditya-u",
    "operator": "Institute for Plasma Research",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.75,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:aditya-u-minor-radius",
    "subject": "facility:aditya-u",
    "subjectName": "ADITYA-U",
    "subjectSlug": "aditya-u",
    "operator": "Institute for Plasma Research",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.2,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:aditya-u-plasma-current",
    "subject": "facility:aditya-u",
    "subjectName": "ADITYA-U",
    "subjectSlug": "aditya-u",
    "operator": "Institute for Plasma Research",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 0.1,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:aditya-u-magnetic-field-onaxis",
    "subject": "facility:aditya-u",
    "subjectName": "ADITYA-U",
    "subjectSlug": "aditya-u",
    "operator": "Institute for Plasma Research",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 1.5,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:aditya-u-plasma-duration",
    "subject": "facility:aditya-u",
    "subjectName": "ADITYA-U",
    "subjectSlug": "aditya-u",
    "operator": "Institute for Plasma Research",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 0.4,
    "unit": "s",
    "qualifier": "nominal",
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason. Source gives a range (0.25–0.4 s); the upper bound is recorded.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:alvand-major-radius",
    "subject": "facility:alvand",
    "subjectName": "ALVAND",
    "subjectSlug": "alvand",
    "operator": "Iran Atomic Energy Organization",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.456,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:alvand-minor-radius",
    "subject": "facility:alvand",
    "subjectName": "ALVAND",
    "subjectSlug": "alvand",
    "operator": "Iran Atomic Energy Organization",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.126,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:alvand-plasma-current",
    "subject": "facility:alvand",
    "subjectName": "ALVAND",
    "subjectSlug": "alvand",
    "operator": "Iran Atomic Energy Organization",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 0.035,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:alvand-magnetic-field-onaxis",
    "subject": "facility:alvand",
    "subjectName": "ALVAND",
    "subjectSlug": "alvand",
    "operator": "Iran Atomic Energy Organization",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 0.8,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:alvand-plasma-duration",
    "subject": "facility:alvand",
    "subjectName": "ALVAND",
    "subjectSlug": "alvand",
    "operator": "Iran Atomic Energy Organization",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 0.009,
    "unit": "s",
    "qualifier": "nominal",
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:asdex-upgrade-major-radius",
    "subject": "facility:asdex-upgrade",
    "subjectName": "ASDEX UPGRADE",
    "subjectSlug": "asdex-upgrade",
    "operator": "Max Planck Institute for Plasma Physics",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 1.65,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:asdex-upgrade-minor-radius",
    "subject": "facility:asdex-upgrade",
    "subjectName": "ASDEX UPGRADE",
    "subjectSlug": "asdex-upgrade",
    "operator": "Max Planck Institute for Plasma Physics",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.5,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:asdex-upgrade-plasma-current",
    "subject": "facility:asdex-upgrade",
    "subjectName": "ASDEX UPGRADE",
    "subjectSlug": "asdex-upgrade",
    "operator": "Max Planck Institute for Plasma Physics",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 1.4,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:asdex-upgrade-magnetic-field-onaxis",
    "subject": "facility:asdex-upgrade",
    "subjectName": "ASDEX UPGRADE",
    "subjectSlug": "asdex-upgrade",
    "operator": "Max Planck Institute for Plasma Physics",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 3.2,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:asdex-upgrade-plasma-duration",
    "subject": "facility:asdex-upgrade",
    "subjectName": "ASDEX UPGRADE",
    "subjectSlug": "asdex-upgrade",
    "operator": "Max Planck Institute for Plasma Physics",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 10,
    "unit": "s",
    "qualifier": "nominal",
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:cth-major-radius",
    "subject": "facility:cth",
    "subjectName": "CTH",
    "subjectSlug": "cth",
    "operator": "Auburn University",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.75,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:cth-minor-radius",
    "subject": "facility:cth",
    "subjectName": "CTH",
    "subjectSlug": "cth",
    "operator": "Auburn University",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.29,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:cth-plasma-current",
    "subject": "facility:cth",
    "subjectName": "CTH",
    "subjectSlug": "cth",
    "operator": "Auburn University",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 0.08,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:cth-magnetic-field-onaxis",
    "subject": "facility:cth",
    "subjectName": "CTH",
    "subjectSlug": "cth",
    "operator": "Auburn University",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 0.7,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:damavand-major-radius",
    "subject": "facility:damavand",
    "subjectName": "DAMAVAND",
    "subjectSlug": "damavand",
    "operator": "Iran Atomic Energy Organization",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.362,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:damavand-minor-radius",
    "subject": "facility:damavand",
    "subjectName": "DAMAVAND",
    "subjectSlug": "damavand",
    "operator": "Iran Atomic Energy Organization",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.077,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:damavand-plasma-current",
    "subject": "facility:damavand",
    "subjectName": "DAMAVAND",
    "subjectSlug": "damavand",
    "operator": "Iran Atomic Energy Organization",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 0.03,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:damavand-magnetic-field-onaxis",
    "subject": "facility:damavand",
    "subjectName": "DAMAVAND",
    "subjectSlug": "damavand",
    "operator": "Iran Atomic Energy Organization",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 0.9,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:damavand-plasma-duration",
    "subject": "facility:damavand",
    "subjectName": "DAMAVAND",
    "subjectSlug": "damavand",
    "operator": "Iran Atomic Energy Organization",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 0.02,
    "unit": "s",
    "qualifier": "nominal",
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:diii-d-major-radius",
    "subject": "facility:diii-d",
    "subjectName": "DIII-D",
    "subjectSlug": "diii-d",
    "operator": "General Atomics",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 1.7,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:diii-d-minor-radius",
    "subject": "facility:diii-d",
    "subjectName": "DIII-D",
    "subjectSlug": "diii-d",
    "operator": "General Atomics",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.6,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:diii-d-plasma-current",
    "subject": "facility:diii-d",
    "subjectName": "DIII-D",
    "subjectSlug": "diii-d",
    "operator": "General Atomics",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 2,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:diii-d-magnetic-field-onaxis",
    "subject": "facility:diii-d",
    "subjectName": "DIII-D",
    "subjectSlug": "diii-d",
    "operator": "General Atomics",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 2.17,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:diii-d-plasma-duration",
    "subject": "facility:diii-d",
    "subjectName": "DIII-D",
    "subjectSlug": "diii-d",
    "operator": "General Atomics",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 10,
    "unit": "s",
    "qualifier": "nominal",
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:east-1066s-duration",
    "subject": "facility:east",
    "subjectName": "Experimental Advanced Superconducting Tokamak",
    "subjectSlug": "east",
    "operator": "Institute of Plasma Physics, Chinese Academy of Sciences",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 1066,
    "unit": "s",
    "qualifier": "sustained",
    "date": "2025-01-20",
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": true,
     "verifiedFields": [],
     "note": "Confirmed verbatim by Physics World: \"produced a steady-state high-confinement plasma for 1066 seconds\". Status remains CLAIMED, not achieved, and the reason is worth stating: independent journalism confirms that the claim was made and what it says — it does not independently confirm the measurement, which remains the operator's. No peer-reviewed result was located. Widely reported alongside \"100 million degrees\"; that figure is NOT recorded here because the captured sources do not establish that the temperature was sustained for the full 1066 s, and peak-versus-sustained is a listed red flag.",
     "sources": [
      {
       "id": "src:physicsworld-east",
       "title": "China’s Experimental Advanced Superconducting Tokamak smashes fusion confinement record",
       "url": "https://physicsworld.com/a/chinas-experimental-advanced-superconducting-tokamak-smashes-fusion-confinement-record/",
       "independence": "independent",
       "type": "news"
      },
      {
       "id": "src:cas-east-1066",
       "title": "Chinese \"Artificial Sun\" Sets New Record in Milestone Step Toward Fusion Power Generation",
       "url": "https://english.cas.cn/newsroom/cas_media/202501/t20250121_899052.shtml",
       "independence": "operator",
       "type": "press-release"
      }
     ]
    }
   },
   {
    "id": "meas:east-major-radius",
    "subject": "facility:east",
    "subjectName": "Experimental Advanced Superconducting Tokamak",
    "subjectSlug": "east",
    "operator": "Institute of Plasma Physics, Chinese Academy of Sciences",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 1.7,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:east-minor-radius",
    "subject": "facility:east",
    "subjectName": "Experimental Advanced Superconducting Tokamak",
    "subjectSlug": "east",
    "operator": "Institute of Plasma Physics, Chinese Academy of Sciences",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.4,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:east-plasma-current",
    "subject": "facility:east",
    "subjectName": "Experimental Advanced Superconducting Tokamak",
    "subjectSlug": "east",
    "operator": "Institute of Plasma Physics, Chinese Academy of Sciences",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 1,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:east-magnetic-field-onaxis",
    "subject": "facility:east",
    "subjectName": "Experimental Advanced Superconducting Tokamak",
    "subjectSlug": "east",
    "operator": "Institute of Plasma Physics, Chinese Academy of Sciences",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 3.5,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:east-plasma-duration",
    "subject": "facility:east",
    "subjectName": "Experimental Advanced Superconducting Tokamak",
    "subjectSlug": "east",
    "operator": "Institute of Plasma Physics, Chinese Academy of Sciences",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 1000,
    "unit": "s",
    "qualifier": "nominal",
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason. Source gives a range (1-1000 s); the upper bound is recorded.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:egyptor-major-radius",
    "subject": "facility:egyptor",
    "subjectName": "EGYPTOR",
    "subjectSlug": "egyptor",
    "operator": "Egyptian Atomic Energy Authority",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.3,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
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    "denominator": null,
    "numerator": null,
    "value": 0.25,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:j-text-plasma-current",
    "subject": "facility:j-text",
    "subjectName": "J-TEXT",
    "subjectSlug": "j-text",
    "operator": "Huazhong University of Science and Technology",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 0.2,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:j-text-magnetic-field-onaxis",
    "subject": "facility:j-text",
    "subjectName": "J-TEXT",
    "subjectSlug": "j-text",
    "operator": "Huazhong University of Science and Technology",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 2,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:j-text-plasma-duration",
    "subject": "facility:j-text",
    "subjectName": "J-TEXT",
    "subjectSlug": "j-text",
    "operator": "Huazhong University of Science and Technology",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 0.8,
    "unit": "s",
    "qualifier": "nominal",
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:jet-dte3-yield",
    "subject": "facility:jet",
    "subjectName": "Joint European Torus",
    "subjectSlug": "joint-european-torus",
    "operator": "UK Atomic Energy Authority",
    "metric": "metric:fusion-energy-yield",
    "metricLabel": "Fusion energy yield",
    "metricFull": "Fusion energy yield",
    "denominator": null,
    "numerator": null,
    "value": 69.26,
    "unit": "MJ",
    "qualifier": null,
    "date": "2023-10",
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": true,
     "verifiedFields": [],
     "note": "Value confirmed verbatim by two operator publications: \"a new world energy record of 69 megajoules\" (EUROfusion) and \"69 megajoules of high power over five seconds\" (UKAEA). Status stays CLAIMED rather than achieved because both sources are the operator or its consortium and no peer-reviewed result has been located — two operator sources agreeing is still one perspective. Reporting gives pulse #104522 on 3 October 2023, but neither captured source states it, so the shot id and exact day are NOT recorded here. Refined 2026-08-06 from 69 to 69.26 MJ: ITER's newsline states \"a new fusion energy record of 69.26 megajoules\", while both operator publications round to 69. Same correction as NIF's 3.15 -> 3.1 — a rounded press figure replaced by the more precise published one. ITER is registered as an AGGREGATOR restating EUROfusion, not as independent corroboration, so the status stays claimed and a peer-reviewed source is still wanted.",
     "sources": [
      {
       "id": "src:eurofusion-dte3",
       "title": "JET Tokamak’s Latest Fusion Energy Record Shows Mastery of Fusion Processes",
       "url": "https://euro-fusion.org/eurofusion-news/dte3record/",
       "independence": "operator",
       "type": "official"
      },
      {
       "id": "src:ukaea-dte3",
       "title": "JET’s final deuterium-tritium experiment results revealed one year on",
       "url": "https://www.ukaea.org/news/jets-final-deuterium-tritium-experiment-results-revealed-one-year-on/",
       "independence": "operator",
       "type": "official"
      },
      {
       "id": "src:iter-jet-record",
       "title": "JET beats its own record",
       "url": "https://www.iter.org/node/20687/jet-beats-its-own-record",
       "independence": "aggregator",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:joint-european-torus-major-radius",
    "subject": "facility:jet",
    "subjectName": "Joint European Torus",
    "subjectSlug": "joint-european-torus",
    "operator": "UK Atomic Energy Authority",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 2.96,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:joint-european-torus-minor-radius",
    "subject": "facility:jet",
    "subjectName": "Joint European Torus",
    "subjectSlug": "joint-european-torus",
    "operator": "UK Atomic Energy Authority",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 1.25,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:joint-european-torus-plasma-current",
    "subject": "facility:jet",
    "subjectName": "Joint European Torus",
    "subjectSlug": "joint-european-torus",
    "operator": "UK Atomic Energy Authority",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 5,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:joint-european-torus-magnetic-field-onaxis",
    "subject": "facility:jet",
    "subjectName": "Joint European Torus",
    "subjectSlug": "joint-european-torus",
    "operator": "UK Atomic Energy Authority",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 3.4,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:joint-european-torus-plasma-duration",
    "subject": "facility:jet",
    "subjectName": "Joint European Torus",
    "subjectSlug": "joint-european-torus",
    "operator": "UK Atomic Energy Authority",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 60,
    "unit": "s",
    "qualifier": "nominal",
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:jt-60sa-major-radius",
    "subject": "facility:jt-60sa",
    "subjectName": "JT-60SA",
    "subjectSlug": "jt-60sa",
    "operator": "National Institutes for Quantum and Radiological Science and Technology",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 2.96,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:jt-60sa-minor-radius",
    "subject": "facility:jt-60sa",
    "subjectName": "JT-60SA",
    "subjectSlug": "jt-60sa",
    "operator": "National Institutes for Quantum and Radiological Science and Technology",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 1.18,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:jt-60sa-plasma-current",
    "subject": "facility:jt-60sa",
    "subjectName": "JT-60SA",
    "subjectSlug": "jt-60sa",
    "operator": "National Institutes for Quantum and Radiological Science and Technology",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 5.5,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:jt-60sa-magnetic-field-onaxis",
    "subject": "facility:jt-60sa",
    "subjectName": "JT-60SA",
    "subjectSlug": "jt-60sa",
    "operator": "National Institutes for Quantum and Radiological Science and Technology",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 2.25,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:jt-60sa-plasma-duration",
    "subject": "facility:jt-60sa",
    "subjectName": "JT-60SA",
    "subjectSlug": "jt-60sa",
    "operator": "National Institutes for Quantum and Radiological Science and Technology",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 100,
    "unit": "s",
    "qualifier": "nominal",
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:jt-60u-triple-product",
    "subject": "facility:jt-60u",
    "subjectName": "JT-60U",
    "subjectSlug": "jt-60u",
    "operator": "National Institutes for Quantum and Radiological Science and Technology",
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 310000000000000000000,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Quoted verbatim: \"The fusion triple product and DT-equivalent fusion gain reached 3.1x1020 m-3keVs (nD(0) = 4.2x1019 m-3, Ti(0) = 21.5 keV, τE = 0.344 s) and 0.185, respectively.\" QUALIFIER: this is the record under full non-inductive current drive, NOT JT-60U's highest ever — the companion paper states it \"renews the record value of the fusion triple product under full non-inductive current drive\". JT-60U's absolute record, widely cited as 1.5e21 m^-3 keV s from a transient high-beta-poloidal H-mode shot, is NOT recorded here because no primary source for it could be captured.",
     "sources": [
      {
       "id": "src:iaea-jt60u-overview",
       "title": "Overview of JT-60U Results toward High Integrated Performance in Reactor-Relevant Regime",
       "url": "https://www-pub.iaea.org/MTCD/publications/PDF/csp_019c/pdf/ov1_3.pdf",
       "independence": "operator",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:jt-60u-ion-temperature",
    "subject": "facility:jt-60u",
    "subjectName": "JT-60U",
    "subjectSlug": "jt-60u",
    "operator": "National Institutes for Quantum and Radiological Science and Technology",
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 21.5,
    "unit": "keV",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature Ti(0) for the same plasma as the triple product above. Peak, not sustained.",
     "sources": [
      {
       "id": "src:iaea-jt60u-overview",
       "title": "Overview of JT-60U Results toward High Integrated Performance in Reactor-Relevant Regime",
       "url": "https://www-pub.iaea.org/MTCD/publications/PDF/csp_019c/pdf/ov1_3.pdf",
       "independence": "operator",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:jt-60u-plasma-density",
    "subject": "facility:jt-60u",
    "subjectName": "JT-60U",
    "subjectSlug": "jt-60u",
    "operator": "National Institutes for Quantum and Radiological Science and Technology",
    "metric": "metric:plasma-density",
    "metricLabel": "Plasma density",
    "metricFull": "Plasma density",
    "denominator": null,
    "numerator": null,
    "value": 42000000000000000000,
    "unit": "m^-3",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central deuterium density nD(0) for the same plasma.",
     "sources": [
      {
       "id": "src:iaea-jt60u-overview",
       "title": "Overview of JT-60U Results toward High Integrated Performance in Reactor-Relevant Regime",
       "url": "https://www-pub.iaea.org/MTCD/publications/PDF/csp_019c/pdf/ov1_3.pdf",
       "independence": "operator",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:jt-60u-energy-confinement-time",
    "subject": "facility:jt-60u",
    "subjectName": "JT-60U",
    "subjectSlug": "jt-60u",
    "operator": "National Institutes for Quantum and Radiological Science and Technology",
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.344,
    "unit": "s",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for the same plasma. This is tau_E, NOT plasma duration — they differ by orders of magnitude and are routinely conflated. The dataset held none before this.",
     "sources": [
      {
       "id": "src:iaea-jt60u-overview",
       "title": "Overview of JT-60U Results toward High Integrated Performance in Reactor-Relevant Regime",
       "url": "https://www-pub.iaea.org/MTCD/publications/PDF/csp_019c/pdf/ov1_3.pdf",
       "independence": "operator",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:jt-60u-gain-equivalent",
    "subject": "facility:jt-60u",
    "subjectName": "JT-60U",
    "subjectSlug": "jt-60u",
    "operator": "National Institutes for Quantum and Radiological Science and Technology",
    "metric": "metric:gain-equivalent",
    "metricLabel": "Equivalent D-T gain (extrapolated)",
    "metricFull": "Equivalent D-T gain (extrapolated)",
    "denominator": "External heating power coupled into the plasma",
    "numerator": "Modelled D-T fusion power",
    "value": 0.185,
    "unit": "1",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": true,
    "isGain": true,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "DT-EQUIVALENT gain: what this deuterium plasma WOULD have produced running on D-T. A calculation about a shot that never happened, so it is marked simulated and is excluded from achieved leaderboards by the registry definition.",
     "sources": [
      {
       "id": "src:iaea-jt60u-overview",
       "title": "Overview of JT-60U Results toward High Integrated Performance in Reactor-Relevant Regime",
       "url": "https://www-pub.iaea.org/MTCD/publications/PDF/csp_019c/pdf/ov1_3.pdf",
       "independence": "operator",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:kstar-ion-temp",
    "subject": "facility:kstar",
    "subjectName": "KSTAR",
    "subjectSlug": "kstar",
    "operator": "Korea Institute of Fusion Energy",
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 8.6,
    "unit": "keV",
    "qualifier": "sustained",
    "date": "2024-03",
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": true,
     "verifiedFields": [],
     "note": "Source states \"ion temperatures of 100 million degrees Celsius\". Recorded as 8.6 keV: 100 MK / 11.6 MK per keV. Celsius versus kelvin is immaterial at this magnitude (273 in 10^8). Storing the press figure in degrees would leave the benchmark unable to compare this against any other device.",
     "sources": [
      {
       "id": "src:kfe-kstar-48s",
       "title": "Green light on continuous fusion plasma operations technology",
       "url": "https://www.eurekalert.org/news-releases/1039244",
       "independence": "operator",
       "type": "press-release"
      }
     ]
    }
   },
   {
    "id": "meas:kstar-major-radius",
    "subject": "facility:kstar",
    "subjectName": "KSTAR",
    "subjectSlug": "kstar",
    "operator": "Korea Institute of Fusion Energy",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 1.8,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:kstar-minor-radius",
    "subject": "facility:kstar",
    "subjectName": "KSTAR",
    "subjectSlug": "kstar",
    "operator": "Korea Institute of Fusion Energy",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.5,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:kstar-plasma-current",
    "subject": "facility:kstar",
    "subjectName": "KSTAR",
    "subjectSlug": "kstar",
    "operator": "Korea Institute of Fusion Energy",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 2,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:kstar-magnetic-field-onaxis",
    "subject": "facility:kstar",
    "subjectName": "KSTAR",
    "subjectSlug": "kstar",
    "operator": "Korea Institute of Fusion Energy",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 3.5,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:kstar-plasma-duration",
    "subject": "facility:kstar",
    "subjectName": "KSTAR",
    "subjectSlug": "kstar",
    "operator": "Korea Institute of Fusion Energy",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 300,
    "unit": "s",
    "qualifier": "nominal",
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:kstar-102s-duration",
    "subject": "facility:kstar",
    "subjectName": "KSTAR",
    "subjectSlug": "kstar",
    "operator": "Korea Institute of Fusion Energy",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 102,
    "unit": "s",
    "qualifier": "sustained",
    "date": "2026-06",
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": true,
     "verifiedFields": [],
     "note": "Confirmed verbatim in Fusion Energy News. Held at MEDIUM confidence, not high: one trade source, no operator confirmation captured, and the page dates itself inconsistently (datelined 2 June 2026 while showing \"1d ago\" against an August 2026 page date). Month precision only.",
     "sources": [
      {
       "id": "src:kstar-102s",
       "title": "KSTAR sustains 100-million-degree plasma for 102 seconds in tungsten divertor campaign",
       "url": "https://www.fusionenergynews.com/story/kstar-sustains-100-million-degree-plasma-for-102-seconds-in-tungsten-divertor-ca",
       "independence": "independent",
       "type": "news"
      }
     ]
    }
   },
   {
    "id": "meas:ktm-major-radius",
    "subject": "facility:ktm",
    "subjectName": "KTM",
    "subjectSlug": "ktm",
    "operator": "Institute of Atomic Energy of National Nuclear Center of the Republic of Kazakhstan",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.9,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:ktm-minor-radius",
    "subject": "facility:ktm",
    "subjectName": "KTM",
    "subjectSlug": "ktm",
    "operator": "Institute of Atomic Energy of National Nuclear Center of the Republic of Kazakhstan",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.45,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:ktm-plasma-current",
    "subject": "facility:ktm",
    "subjectName": "KTM",
    "subjectSlug": "ktm",
    "operator": "Institute of Atomic Energy of National Nuclear Center of the Republic of Kazakhstan",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 0.75,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:ktm-magnetic-field-onaxis",
    "subject": "facility:ktm",
    "subjectName": "KTM",
    "subjectSlug": "ktm",
    "operator": "Institute of Atomic Energy of National Nuclear Center of the Republic of Kazakhstan",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 1,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:ktm-plasma-duration",
    "subject": "facility:ktm",
    "subjectName": "KTM",
    "subjectSlug": "ktm",
    "operator": "Institute of Atomic Energy of National Nuclear Center of the Republic of Kazakhstan",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 5,
    "unit": "s",
    "qualifier": "nominal",
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:ktx-major-radius",
    "subject": "facility:ktx",
    "subjectName": "KTX",
    "subjectSlug": "ktx",
    "operator": "University of Science and Technology of China",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 1.4,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:ktx-minor-radius",
    "subject": "facility:ktx",
    "subjectName": "KTX",
    "subjectSlug": "ktx",
    "operator": "University of Science and Technology of China",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.4,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:ktx-plasma-current",
    "subject": "facility:ktx",
    "subjectName": "KTX",
    "subjectSlug": "ktx",
    "operator": "University of Science and Technology of China",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 1,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:large-helical-device-major-radius",
    "subject": "facility:lhd",
    "subjectName": "Large Helical Device",
    "subjectSlug": "large-helical-device",
    "operator": "National Institute for Fusion Science",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 3.9,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:large-helical-device-minor-radius",
    "subject": "facility:lhd",
    "subjectName": "Large Helical Device",
    "subjectSlug": "large-helical-device",
    "operator": "National Institute for Fusion Science",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.65,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:large-helical-device-magnetic-field-onaxis",
    "subject": "facility:lhd",
    "subjectName": "Large Helical Device",
    "subjectSlug": "large-helical-device",
    "operator": "National Institute for Fusion Science",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 4,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:t-3-lawson-triple-product",
    "subject": "facility:t-3",
    "subjectName": "T-3",
    "subjectSlug": "t-3",
    "operator": null,
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 20000000000000000,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": "1969",
    "status": "claimed",
    "shotId": "H_{z}=25 kOe, I_{z}=85 kA discharges",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot H_{z}=25 kOe, I_{z}=85 kA discharges, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:t-3-lawson-ion-temperature",
    "subject": "facility:t-3",
    "subjectName": "T-3",
    "subjectSlug": "t-3",
    "operator": null,
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 0.3,
    "unit": "keV",
    "qualifier": null,
    "date": "1969",
    "status": "claimed",
    "shotId": "H_{z}=25 kOe, I_{z}=85 kA discharges",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot H_{z}=25 kOe, I_{z}=85 kA discharges, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:t-3-lawson-plasma-density",
    "subject": "facility:t-3",
    "subjectName": "T-3",
    "subjectSlug": "t-3",
    "operator": null,
    "metric": "metric:plasma-density",
    "metricLabel": "Plasma density",
    "metricFull": "Plasma density",
    "denominator": null,
    "numerator": null,
    "value": 22500000000000000000,
    "unit": "m^-3",
    "qualifier": null,
    "date": "1969",
    "status": "claimed",
    "shotId": "H_{z}=25 kOe, I_{z}=85 kA discharges",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion density for shot H_{z}=25 kOe, I_{z}=85 kA discharges, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:t-3-lawson-energy-confinement-time",
    "subject": "facility:t-3",
    "subjectName": "T-3",
    "subjectSlug": "t-3",
    "operator": null,
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.003,
    "unit": "s",
    "qualifier": null,
    "date": "1969",
    "status": "claimed",
    "shotId": "H_{z}=25 kOe, I_{z}=85 kA discharges",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot H_{z}=25 kOe, I_{z}=85 kA discharges, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:st-princeton-lawson-triple-product",
    "subject": "facility:st-princeton",
    "subjectName": "ST",
    "subjectSlug": "st-princeton",
    "operator": null,
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 240000000000000000,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": "1972",
    "status": "claimed",
    "shotId": "12cm limiter",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot 12cm limiter, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:st-princeton-lawson-ion-temperature",
    "subject": "facility:st-princeton",
    "subjectName": "ST",
    "subjectSlug": "st-princeton",
    "operator": null,
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 0.4,
    "unit": "keV",
    "qualifier": null,
    "date": "1972",
    "status": "claimed",
    "shotId": "12cm limiter",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot 12cm limiter, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:st-princeton-lawson-plasma-density",
    "subject": "facility:st-princeton",
    "subjectName": "ST",
    "subjectSlug": "st-princeton",
    "operator": null,
    "metric": "metric:plasma-density",
    "metricLabel": "Plasma density",
    "metricFull": "Plasma density",
    "denominator": null,
    "numerator": null,
    "value": 60000000000000000000,
    "unit": "m^-3",
    "qualifier": null,
    "date": "1972",
    "status": "claimed",
    "shotId": "12cm limiter",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion density for shot 12cm limiter, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:st-princeton-lawson-energy-confinement-time",
    "subject": "facility:st-princeton",
    "subjectName": "ST",
    "subjectSlug": "st-princeton",
    "operator": null,
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.01,
    "unit": "s",
    "qualifier": null,
    "date": "1972",
    "status": "claimed",
    "shotId": "12cm limiter",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot 12cm limiter, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:tfr-lawson-triple-product",
    "subject": "facility:tfr",
    "subjectName": "TFR",
    "subjectSlug": "tfr",
    "operator": null,
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 5200000000000000000,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": "1981",
    "status": "claimed",
    "shotId": "Iconel limiter",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot Iconel limiter, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:tfr-lawson-ion-temperature",
    "subject": "facility:tfr",
    "subjectName": "TFR",
    "subjectSlug": "tfr",
    "operator": null,
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 0.95,
    "unit": "keV",
    "qualifier": null,
    "date": "1981",
    "status": "claimed",
    "shotId": "Iconel limiter",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot Iconel limiter, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:tfr-lawson-plasma-density",
    "subject": "facility:tfr",
    "subjectName": "TFR",
    "subjectSlug": "tfr",
    "operator": null,
    "metric": "metric:plasma-density",
    "metricLabel": "Plasma density",
    "metricFull": "Plasma density",
    "denominator": null,
    "numerator": null,
    "value": 161000000000000000000,
    "unit": "m^-3",
    "qualifier": null,
    "date": "1981",
    "status": "claimed",
    "shotId": "Iconel limiter",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion density for shot Iconel limiter, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:tfr-lawson-energy-confinement-time",
    "subject": "facility:tfr",
    "subjectName": "TFR",
    "subjectSlug": "tfr",
    "operator": null,
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.034,
    "unit": "s",
    "qualifier": null,
    "date": "1981",
    "status": "claimed",
    "shotId": "Iconel limiter",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot Iconel limiter, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:plt-lawson-triple-product",
    "subject": "facility:plt",
    "subjectName": "PLT",
    "subjectSlug": "plt",
    "operator": null,
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 3200000000000000000,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": "1976",
    "status": "claimed",
    "shotId": "22149-231",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot 22149-231, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:plt-lawson-ion-temperature",
    "subject": "facility:plt",
    "subjectName": "PLT",
    "subjectSlug": "plt",
    "operator": null,
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 1.54,
    "unit": "keV",
    "qualifier": null,
    "date": "1976",
    "status": "claimed",
    "shotId": "22149-231",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot 22149-231, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:plt-lawson-plasma-density",
    "subject": "facility:plt",
    "subjectName": "PLT",
    "subjectSlug": "plt",
    "operator": null,
    "metric": "metric:plasma-density",
    "metricLabel": "Plasma density",
    "metricFull": "Plasma density",
    "denominator": null,
    "numerator": null,
    "value": 52000000000000000000,
    "unit": "m^-3",
    "qualifier": null,
    "date": "1976",
    "status": "claimed",
    "shotId": "22149-231",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion density for shot 22149-231, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:plt-lawson-energy-confinement-time",
    "subject": "facility:plt",
    "subjectName": "PLT",
    "subjectSlug": "plt",
    "operator": null,
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.04,
    "unit": "s",
    "qualifier": null,
    "date": "1976",
    "status": "claimed",
    "shotId": "22149-231",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot 22149-231, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:alcator-a-lawson-triple-product",
    "subject": "facility:alcator-a",
    "subjectName": "Alcator A",
    "subjectSlug": "alcator-a",
    "operator": null,
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 24000000000000000000,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": "1978",
    "status": "claimed",
    "shotId": "8.7T discharge",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot 8.7T discharge, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:alcator-a-lawson-ion-temperature",
    "subject": "facility:alcator-a",
    "subjectName": "Alcator A",
    "subjectSlug": "alcator-a",
    "operator": null,
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 0.8,
    "unit": "keV",
    "qualifier": null,
    "date": "1978",
    "status": "claimed",
    "shotId": "8.7T discharge",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot 8.7T discharge, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:alcator-a-lawson-plasma-density",
    "subject": "facility:alcator-a",
    "subjectName": "Alcator A",
    "subjectSlug": "alcator-a",
    "operator": null,
    "metric": "metric:plasma-density",
    "metricLabel": "Plasma density",
    "metricFull": "Plasma density",
    "denominator": null,
    "numerator": null,
    "value": 1.5e+21,
    "unit": "m^-3",
    "qualifier": null,
    "date": "1978",
    "status": "claimed",
    "shotId": "8.7T discharge",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion density for shot 8.7T discharge, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:alcator-a-lawson-energy-confinement-time",
    "subject": "facility:alcator-a",
    "subjectName": "Alcator A",
    "subjectSlug": "alcator-a",
    "operator": null,
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.02,
    "unit": "s",
    "qualifier": null,
    "date": "1978",
    "status": "claimed",
    "shotId": "8.7T discharge",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot 8.7T discharge, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:alcator-c-lawson-triple-product",
    "subject": "facility:alcator-c",
    "subjectName": "Alcator C",
    "subjectSlug": "alcator-c",
    "operator": null,
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 120000000000000000000,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": "1984",
    "status": "claimed",
    "shotId": "Multiple pellet injection",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot Multiple pellet injection, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:alcator-c-lawson-ion-temperature",
    "subject": "facility:alcator-c",
    "subjectName": "Alcator C",
    "subjectSlug": "alcator-c",
    "operator": null,
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 1.5,
    "unit": "keV",
    "qualifier": null,
    "date": "1984",
    "status": "claimed",
    "shotId": "Multiple pellet injection",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot Multiple pellet injection, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:alcator-c-lawson-plasma-density",
    "subject": "facility:alcator-c",
    "subjectName": "Alcator C",
    "subjectSlug": "alcator-c",
    "operator": null,
    "metric": "metric:plasma-density",
    "metricLabel": "Plasma density",
    "metricFull": "Plasma density",
    "denominator": null,
    "numerator": null,
    "value": 1.5e+21,
    "unit": "m^-3",
    "qualifier": null,
    "date": "1984",
    "status": "claimed",
    "shotId": "Multiple pellet injection",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion density for shot Multiple pellet injection, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:alcator-c-lawson-energy-confinement-time",
    "subject": "facility:alcator-c",
    "subjectName": "Alcator C",
    "subjectSlug": "alcator-c",
    "operator": null,
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.052,
    "unit": "s",
    "qualifier": null,
    "date": "1984",
    "status": "claimed",
    "shotId": "Multiple pellet injection",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot Multiple pellet injection, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:asdex-lawson-triple-product",
    "subject": "facility:asdex",
    "subjectName": "ASDEX",
    "subjectSlug": "asdex",
    "operator": null,
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 7200000000000000000,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": "1988",
    "status": "claimed",
    "shotId": "23349-57",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot 23349-57, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:asdex-lawson-ion-temperature",
    "subject": "facility:asdex",
    "subjectName": "ASDEX",
    "subjectSlug": "asdex",
    "operator": null,
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 0.8,
    "unit": "keV",
    "qualifier": null,
    "date": "1988",
    "status": "claimed",
    "shotId": "23349-57",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot 23349-57, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:asdex-lawson-energy-confinement-time",
    "subject": "facility:asdex",
    "subjectName": "ASDEX",
    "subjectSlug": "asdex",
    "operator": null,
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.12,
    "unit": "s",
    "qualifier": null,
    "date": "1988",
    "status": "claimed",
    "shotId": "23349-57",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot 23349-57, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:joint-european-torus-lawson-triple-product",
    "subject": "facility:jet",
    "subjectName": "Joint European Torus",
    "subjectSlug": "joint-european-torus",
    "operator": "UK Atomic Energy Authority",
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 610000000000000000000,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": "1991-11-02",
    "status": "claimed",
    "shotId": "26087",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot 26087, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. NOT fully measured: energy confinement time inferred from a differently-defined measurement. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:joint-european-torus-lawson-ion-temperature",
    "subject": "facility:jet",
    "subjectName": "Joint European Torus",
    "subjectSlug": "joint-european-torus",
    "operator": "UK Atomic Energy Authority",
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 18.6,
    "unit": "keV",
    "qualifier": null,
    "date": "1991-11-02",
    "status": "claimed",
    "shotId": "26087",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot 26087, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. NOT fully measured: energy confinement time inferred from a differently-defined measurement. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:joint-european-torus-lawson-plasma-density",
    "subject": "facility:jet",
    "subjectName": "Joint European Torus",
    "subjectSlug": "joint-european-torus",
    "operator": "UK Atomic Energy Authority",
    "metric": "metric:plasma-density",
    "metricLabel": "Plasma density",
    "metricFull": "Plasma density",
    "denominator": null,
    "numerator": null,
    "value": 41000000000000000000,
    "unit": "m^-3",
    "qualifier": null,
    "date": "1991-11-02",
    "status": "claimed",
    "shotId": "26087",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion density for shot 26087, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. NOT fully measured: energy confinement time inferred from a differently-defined measurement. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:joint-european-torus-lawson-energy-confinement-time",
    "subject": "facility:jet",
    "subjectName": "Joint European Torus",
    "subjectSlug": "joint-european-torus",
    "operator": "UK Atomic Energy Authority",
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.8,
    "unit": "s",
    "qualifier": null,
    "date": "1991-11-02",
    "status": "claimed",
    "shotId": "26087",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot 26087, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. NOT fully measured: energy confinement time inferred from a differently-defined measurement. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:tftr-lawson-triple-product",
    "subject": "facility:tftr",
    "subjectName": "Tokamak Fusion Test Reactor",
    "subjectSlug": "tftr",
    "operator": "Princeton Plasma Physics Laboratory",
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 790000000000000000000,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": "1995-02-17",
    "status": "claimed",
    "shotId": "83546",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot 83546, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. NOT fully measured: energy confinement time inferred from a differently-defined measurement. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:tftr-lawson-ion-temperature",
    "subject": "facility:tftr",
    "subjectName": "Tokamak Fusion Test Reactor",
    "subjectSlug": "tftr",
    "operator": "Princeton Plasma Physics Laboratory",
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 43,
    "unit": "keV",
    "qualifier": null,
    "date": "1995-02-17",
    "status": "claimed",
    "shotId": "83546",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot 83546, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. NOT fully measured: energy confinement time inferred from a differently-defined measurement. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:tftr-lawson-plasma-density",
    "subject": "facility:tftr",
    "subjectName": "Tokamak Fusion Test Reactor",
    "subjectSlug": "tftr",
    "operator": "Princeton Plasma Physics Laboratory",
    "metric": "metric:plasma-density",
    "metricLabel": "Plasma density",
    "metricFull": "Plasma density",
    "denominator": null,
    "numerator": null,
    "value": 66000000000000000000,
    "unit": "m^-3",
    "qualifier": null,
    "date": "1995-02-17",
    "status": "claimed",
    "shotId": "83546",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion density for shot 83546, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. NOT fully measured: energy confinement time inferred from a differently-defined measurement. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:tftr-lawson-energy-confinement-time",
    "subject": "facility:tftr",
    "subjectName": "Tokamak Fusion Test Reactor",
    "subjectSlug": "tftr",
    "operator": "Princeton Plasma Physics Laboratory",
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.28,
    "unit": "s",
    "qualifier": null,
    "date": "1995-02-17",
    "status": "claimed",
    "shotId": "83546",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot 83546, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. NOT fully measured: energy confinement time inferred from a differently-defined measurement. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:jt-60u-lawson-triple-product",
    "subject": "facility:jt-60u",
    "subjectName": "JT-60U",
    "subjectSlug": "jt-60u",
    "operator": "National Institutes for Quantum and Radiological Science and Technology",
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 559999999999999930000,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": "1998",
    "status": "claimed",
    "shotId": "E31872",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot E31872, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. NOT fully measured: energy confinement time inferred from a differently-defined measurement. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:jt-60u-lawson-ion-temperature",
    "subject": "facility:jt-60u",
    "subjectName": "JT-60U",
    "subjectSlug": "jt-60u",
    "operator": "National Institutes for Quantum and Radiological Science and Technology",
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 16.8,
    "unit": "keV",
    "qualifier": null,
    "date": "1998",
    "status": "claimed",
    "shotId": "E31872",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot E31872, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. NOT fully measured: energy confinement time inferred from a differently-defined measurement. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:jt-60u-lawson-plasma-density",
    "subject": "facility:jt-60u",
    "subjectName": "JT-60U",
    "subjectSlug": "jt-60u",
    "operator": "National Institutes for Quantum and Radiological Science and Technology",
    "metric": "metric:plasma-density",
    "metricLabel": "Plasma density",
    "metricFull": "Plasma density",
    "denominator": null,
    "numerator": null,
    "value": 48000000000000000000,
    "unit": "m^-3",
    "qualifier": null,
    "date": "1998",
    "status": "claimed",
    "shotId": "E31872",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion density for shot E31872, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. NOT fully measured: energy confinement time inferred from a differently-defined measurement. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:jt-60u-lawson-energy-confinement-time",
    "subject": "facility:jt-60u",
    "subjectName": "JT-60U",
    "subjectSlug": "jt-60u",
    "operator": "National Institutes for Quantum and Radiological Science and Technology",
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.69,
    "unit": "s",
    "qualifier": null,
    "date": "1998",
    "status": "claimed",
    "shotId": "E31872",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot E31872, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. NOT fully measured: energy confinement time inferred from a differently-defined measurement. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:diii-d-lawson-triple-product",
    "subject": "facility:diii-d",
    "subjectName": "DIII-D",
    "subjectSlug": "diii-d",
    "operator": "General Atomics",
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 370000000000000000000,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": "1997",
    "status": "claimed",
    "shotId": "87977",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot 87977, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. NOT fully measured: energy confinement time inferred from a differently-defined measurement. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:diii-d-lawson-ion-temperature",
    "subject": "facility:diii-d",
    "subjectName": "DIII-D",
    "subjectSlug": "diii-d",
    "operator": "General Atomics",
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 18.1,
    "unit": "keV",
    "qualifier": null,
    "date": "1997",
    "status": "claimed",
    "shotId": "87977",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot 87977, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. NOT fully measured: energy confinement time inferred from a differently-defined measurement. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:diii-d-lawson-plasma-density",
    "subject": "facility:diii-d",
    "subjectName": "DIII-D",
    "subjectSlug": "diii-d",
    "operator": "General Atomics",
    "metric": "metric:plasma-density",
    "metricLabel": "Plasma density",
    "metricFull": "Plasma density",
    "denominator": null,
    "numerator": null,
    "value": 85000000000000000000,
    "unit": "m^-3",
    "qualifier": null,
    "date": "1997",
    "status": "claimed",
    "shotId": "87977",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion density for shot 87977, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. NOT fully measured: energy confinement time inferred from a differently-defined measurement. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:diii-d-lawson-energy-confinement-time",
    "subject": "facility:diii-d",
    "subjectName": "DIII-D",
    "subjectSlug": "diii-d",
    "operator": "General Atomics",
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.24,
    "unit": "s",
    "qualifier": null,
    "date": "1997",
    "status": "claimed",
    "shotId": "87977",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot 87977, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. NOT fully measured: energy confinement time inferred from a differently-defined measurement. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:start-lawson-triple-product",
    "subject": "facility:start",
    "subjectName": "START",
    "subjectSlug": "start",
    "operator": null,
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 61000000000000000,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": "1998",
    "status": "claimed",
    "shotId": "35533",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot 35533, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:start-lawson-ion-temperature",
    "subject": "facility:start",
    "subjectName": "START",
    "subjectSlug": "start",
    "operator": null,
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 0.2,
    "unit": "keV",
    "qualifier": null,
    "date": "1998",
    "status": "claimed",
    "shotId": "35533",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot 35533, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:start-lawson-energy-confinement-time",
    "subject": "facility:start",
    "subjectName": "START",
    "subjectSlug": "start",
    "operator": null,
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.003,
    "unit": "s",
    "qualifier": null,
    "date": "1998",
    "status": "claimed",
    "shotId": "35533",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot 35533, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:mast-lawson-triple-product",
    "subject": "facility:mast",
    "subjectName": "MAST",
    "subjectSlug": "mast",
    "operator": null,
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 4500000000000000000,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": "2006",
    "status": "claimed",
    "shotId": "14626",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot 14626, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:mast-lawson-ion-temperature",
    "subject": "facility:mast",
    "subjectName": "MAST",
    "subjectSlug": "mast",
    "operator": null,
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 3,
    "unit": "keV",
    "qualifier": null,
    "date": "2006",
    "status": "claimed",
    "shotId": "14626",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot 14626, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:mast-lawson-plasma-density",
    "subject": "facility:mast",
    "subjectName": "MAST",
    "subjectSlug": "mast",
    "operator": null,
    "metric": "metric:plasma-density",
    "metricLabel": "Plasma density",
    "metricFull": "Plasma density",
    "denominator": null,
    "numerator": null,
    "value": 30000000000000000000,
    "unit": "m^-3",
    "qualifier": null,
    "date": "2006",
    "status": "claimed",
    "shotId": "14626",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion density for shot 14626, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:mast-lawson-energy-confinement-time",
    "subject": "facility:mast",
    "subjectName": "MAST",
    "subjectSlug": "mast",
    "operator": null,
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.05,
    "unit": "s",
    "qualifier": null,
    "date": "2006",
    "status": "claimed",
    "shotId": "14626",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot 14626, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:nstx-lawson-triple-product",
    "subject": "facility:nstx",
    "subjectName": "NSTX",
    "subjectSlug": "nstx",
    "operator": null,
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 4800000000000000000,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": "2009",
    "status": "claimed",
    "shotId": "129041",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot 129041, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:nstx-lawson-ion-temperature",
    "subject": "facility:nstx",
    "subjectName": "NSTX",
    "subjectSlug": "nstx",
    "operator": null,
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 1.2,
    "unit": "keV",
    "qualifier": null,
    "date": "2009",
    "status": "claimed",
    "shotId": "129041",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot 129041, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:nstx-lawson-plasma-density",
    "subject": "facility:nstx",
    "subjectName": "NSTX",
    "subjectSlug": "nstx",
    "operator": null,
    "metric": "metric:plasma-density",
    "metricLabel": "Plasma density",
    "metricFull": "Plasma density",
    "denominator": null,
    "numerator": null,
    "value": 50000000000000000000,
    "unit": "m^-3",
    "qualifier": null,
    "date": "2009",
    "status": "claimed",
    "shotId": "129041",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion density for shot 129041, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:nstx-lawson-energy-confinement-time",
    "subject": "facility:nstx",
    "subjectName": "NSTX",
    "subjectSlug": "nstx",
    "operator": null,
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.08,
    "unit": "s",
    "qualifier": null,
    "date": "2009",
    "status": "claimed",
    "shotId": "129041",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot 129041, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:east-lawson-triple-product",
    "subject": "facility:east",
    "subjectName": "Experimental Advanced Superconducting Tokamak",
    "subjectSlug": "east",
    "operator": "Institute of Plasma Physics, Chinese Academy of Sciences",
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 9600000000000000000,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": "2015",
    "status": "claimed",
    "shotId": "56933",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot 56933, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:east-lawson-ion-temperature",
    "subject": "facility:east",
    "subjectName": "Experimental Advanced Superconducting Tokamak",
    "subjectSlug": "east",
    "operator": "Institute of Plasma Physics, Chinese Academy of Sciences",
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 2.1,
    "unit": "keV",
    "qualifier": null,
    "date": "2015",
    "status": "claimed",
    "shotId": "56933",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot 56933, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:east-lawson-plasma-density",
    "subject": "facility:east",
    "subjectName": "Experimental Advanced Superconducting Tokamak",
    "subjectSlug": "east",
    "operator": "Institute of Plasma Physics, Chinese Academy of Sciences",
    "metric": "metric:plasma-density",
    "metricLabel": "Plasma density",
    "metricFull": "Plasma density",
    "denominator": null,
    "numerator": null,
    "value": 85000000000000000000,
    "unit": "m^-3",
    "qualifier": null,
    "date": "2015",
    "status": "claimed",
    "shotId": "56933",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion density for shot 56933, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:east-lawson-energy-confinement-time",
    "subject": "facility:east",
    "subjectName": "Experimental Advanced Superconducting Tokamak",
    "subjectSlug": "east",
    "operator": "Institute of Plasma Physics, Chinese Academy of Sciences",
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.054,
    "unit": "s",
    "qualifier": null,
    "date": "2015",
    "status": "claimed",
    "shotId": "56933",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot 56933, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:kstar-lawson-triple-product",
    "subject": "facility:kstar",
    "subjectName": "KSTAR",
    "subjectSlug": "kstar",
    "operator": "Korea Institute of Fusion Energy",
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 9600000000000000000,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": "2014",
    "status": "claimed",
    "shotId": "7081",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot 7081, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:kstar-lawson-ion-temperature",
    "subject": "facility:kstar",
    "subjectName": "KSTAR",
    "subjectSlug": "kstar",
    "operator": "Korea Institute of Fusion Energy",
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 2,
    "unit": "keV",
    "qualifier": null,
    "date": "2014",
    "status": "claimed",
    "shotId": "7081",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot 7081, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:kstar-lawson-energy-confinement-time",
    "subject": "facility:kstar",
    "subjectName": "KSTAR",
    "subjectSlug": "kstar",
    "operator": "Korea Institute of Fusion Energy",
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.1,
    "unit": "s",
    "qualifier": null,
    "date": "2014",
    "status": "claimed",
    "shotId": "7081",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot 7081, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:c-mod-lawson-triple-product",
    "subject": "facility:c-mod",
    "subjectName": "C-Mod",
    "subjectSlug": "c-mod",
    "operator": null,
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 74000000000000000000,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": "2016",
    "status": "claimed",
    "shotId": "1160930033",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot 1160930033, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:c-mod-lawson-ion-temperature",
    "subject": "facility:c-mod",
    "subjectName": "C-Mod",
    "subjectSlug": "c-mod",
    "operator": null,
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 2.5,
    "unit": "keV",
    "qualifier": null,
    "date": "2016",
    "status": "claimed",
    "shotId": "1160930033",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot 1160930033, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:c-mod-lawson-plasma-density",
    "subject": "facility:c-mod",
    "subjectName": "C-Mod",
    "subjectSlug": "c-mod",
    "operator": null,
    "metric": "metric:plasma-density",
    "metricLabel": "Plasma density",
    "metricFull": "Plasma density",
    "denominator": null,
    "numerator": null,
    "value": 550000000000000000000,
    "unit": "m^-3",
    "qualifier": null,
    "date": "2016",
    "status": "claimed",
    "shotId": "1160930033",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion density for shot 1160930033, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:c-mod-lawson-energy-confinement-time",
    "subject": "facility:c-mod",
    "subjectName": "C-Mod",
    "subjectSlug": "c-mod",
    "operator": null,
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.054,
    "unit": "s",
    "qualifier": null,
    "date": "2016",
    "status": "claimed",
    "shotId": "1160930033",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot 1160930033, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:asdex-upgrade-lawson-triple-product",
    "subject": "facility:asdex-upgrade",
    "subjectName": "ASDEX UPGRADE",
    "subjectSlug": "asdex-upgrade",
    "operator": "Max Planck Institute for Plasma Physics",
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 22000000000000000000,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": "2016",
    "status": "claimed",
    "shotId": "32305",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot 32305, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:asdex-upgrade-lawson-ion-temperature",
    "subject": "facility:asdex-upgrade",
    "subjectName": "ASDEX UPGRADE",
    "subjectSlug": "asdex-upgrade",
    "operator": "Max Planck Institute for Plasma Physics",
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 8,
    "unit": "keV",
    "qualifier": null,
    "date": "2016",
    "status": "claimed",
    "shotId": "32305",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot 32305, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:asdex-upgrade-lawson-plasma-density",
    "subject": "facility:asdex-upgrade",
    "subjectName": "ASDEX UPGRADE",
    "subjectSlug": "asdex-upgrade",
    "operator": "Max Planck Institute for Plasma Physics",
    "metric": "metric:plasma-density",
    "metricLabel": "Plasma density",
    "metricFull": "Plasma density",
    "denominator": null,
    "numerator": null,
    "value": 50000000000000000000,
    "unit": "m^-3",
    "qualifier": null,
    "date": "2016",
    "status": "claimed",
    "shotId": "32305",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion density for shot 32305, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:asdex-upgrade-lawson-energy-confinement-time",
    "subject": "facility:asdex-upgrade",
    "subjectName": "ASDEX UPGRADE",
    "subjectSlug": "asdex-upgrade",
    "operator": "Max Planck Institute for Plasma Physics",
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.056,
    "unit": "s",
    "qualifier": null,
    "date": "2016",
    "status": "claimed",
    "shotId": "32305",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot 32305, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:globus-m2-lawson-triple-product",
    "subject": "facility:globus-m2",
    "subjectName": "GLOBUS-M2",
    "subjectSlug": "globus-m2",
    "operator": "Ioffe Institute",
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 1400000000000000000,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": "2019",
    "status": "claimed",
    "shotId": "37873",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot 37873, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:globus-m2-lawson-ion-temperature",
    "subject": "facility:globus-m2",
    "subjectName": "GLOBUS-M2",
    "subjectSlug": "globus-m2",
    "operator": "Ioffe Institute",
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 1.2,
    "unit": "keV",
    "qualifier": null,
    "date": "2019",
    "status": "claimed",
    "shotId": "37873",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot 37873, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:globus-m2-lawson-energy-confinement-time",
    "subject": "facility:globus-m2",
    "subjectName": "GLOBUS-M2",
    "subjectSlug": "globus-m2",
    "operator": "Ioffe Institute",
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.01,
    "unit": "s",
    "qualifier": null,
    "date": "2019",
    "status": "claimed",
    "shotId": "37873",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot 37873, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:st40-lawson-triple-product",
    "subject": "facility:st40",
    "subjectName": "ST40",
    "subjectSlug": "st40",
    "operator": "Tokamak Energy",
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 6300000000000000000,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": "2022",
    "status": "claimed",
    "shotId": "10009",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot 10009, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:st40-lawson-ion-temperature",
    "subject": "facility:st40",
    "subjectName": "ST40",
    "subjectSlug": "st40",
    "operator": "Tokamak Energy",
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 9.6,
    "unit": "keV",
    "qualifier": null,
    "date": "2022",
    "status": "claimed",
    "shotId": "10009",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot 10009, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:st40-lawson-plasma-density",
    "subject": "facility:st40",
    "subjectName": "ST40",
    "subjectSlug": "st40",
    "operator": "Tokamak Energy",
    "metric": "metric:plasma-density",
    "metricLabel": "Plasma density",
    "metricFull": "Plasma density",
    "denominator": null,
    "numerator": null,
    "value": 55000000000000000000,
    "unit": "m^-3",
    "qualifier": null,
    "date": "2022",
    "status": "claimed",
    "shotId": "10009",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion density for shot 10009, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:st40-lawson-energy-confinement-time",
    "subject": "facility:st40",
    "subjectName": "ST40",
    "subjectSlug": "st40",
    "operator": "Tokamak Energy",
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.012,
    "unit": "s",
    "qualifier": null,
    "date": "2022",
    "status": "claimed",
    "shotId": "10009",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot 10009, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. Recorded as the highest value this compilation lists for this device, not necessarily the device record.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:joint-european-torus-lawson-gain-plasma",
    "subject": "facility:jet",
    "subjectName": "Joint European Torus",
    "subjectSlug": "joint-european-torus",
    "operator": "UK Atomic Energy Authority",
    "metric": "metric:gain-plasma",
    "metricLabel": "Q_plasma",
    "metricFull": "Plasma gain (Q_plasma)",
    "denominator": "External heating power coupled into the plasma",
    "numerator": "Fusion power produced",
    "value": 0.63,
    "unit": "1",
    "qualifier": null,
    "date": "1997-10-31",
    "status": "claimed",
    "shotId": "42976",
    "simulated": false,
    "isGain": true,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Scientific gain Q_sci for shot 42976, from Table 4 of Wurzel & Hsu. Recorded as PLASMA gain: this is a magnetic-confinement device, so the denominator is external heating power coupled into the plasma, not laser energy on a target.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:tftr-lawson-gain-plasma",
    "subject": "facility:tftr",
    "subjectName": "Tokamak Fusion Test Reactor",
    "subjectSlug": "tftr",
    "operator": "Princeton Plasma Physics Laboratory",
    "metric": "metric:gain-plasma",
    "metricLabel": "Q_plasma",
    "metricFull": "Plasma gain (Q_plasma)",
    "denominator": "External heating power coupled into the plasma",
    "numerator": "Fusion power produced",
    "value": 0.28,
    "unit": "1",
    "qualifier": null,
    "date": "1994-05-27",
    "status": "claimed",
    "shotId": "76778",
    "simulated": false,
    "isGain": true,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Scientific gain Q_sci for shot 76778, from Table 4 of Wurzel & Hsu. Recorded as PLASMA gain: this is a magnetic-confinement device, so the denominator is external heating power coupled into the plasma, not laser energy on a target.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:national-ignition-facility-lawson-gain-target",
    "subject": "facility:nif",
    "subjectName": "National Ignition Facility",
    "subjectSlug": "national-ignition-facility",
    "operator": "Lawrence Livermore National Laboratory",
    "metric": "metric:gain-target",
    "metricLabel": "Q_target",
    "metricFull": "Target gain (Q_target)",
    "denominator": "Laser energy delivered to the target, including hohlraum losses",
    "numerator": "Total fusion energy yield of the implosion",
    "value": 4.13,
    "unit": "1",
    "qualifier": null,
    "date": "2025-04-07",
    "status": "claimed",
    "shotId": "N250406",
    "simulated": false,
    "isGain": true,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Scientific gain Q_sci for shot N250406, from Table 4 of Wurzel & Hsu. Recorded as TARGET gain: an inertial-confinement shot, so the denominator is driver energy delivered to the target. Driver energy 2100000 J, yield 8600000 J.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:omega-lawson-gain-target",
    "subject": "facility:omega",
    "subjectName": "OMEGA",
    "subjectSlug": "omega",
    "operator": "University of Rochester Laboratory for Laser Energetics",
    "metric": "metric:gain-target",
    "metricLabel": "Q_target",
    "metricFull": "Target gain (Q_target)",
    "denominator": "Laser energy delivered to the target, including hohlraum losses",
    "numerator": "Total fusion energy yield of the implosion",
    "value": 0.03,
    "unit": "1",
    "qualifier": null,
    "date": "2022-04-14",
    "status": "claimed",
    "shotId": "103952",
    "simulated": false,
    "isGain": true,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Scientific gain Q_sci for shot 103952, from Table 4 of Wurzel & Hsu. Recorded as TARGET gain: an inertial-confinement shot, so the denominator is driver energy delivered to the target. Driver energy 30000 J, yield 869.9999999999999 J.",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:libtor-major-radius",
    "subject": "facility:libtor",
    "subjectName": "LIBTOR",
    "subjectSlug": "libtor",
    "operator": "Tajoura Nuclear Research Centre",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.53,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:libtor-minor-radius",
    "subject": "facility:libtor",
    "subjectName": "LIBTOR",
    "subjectSlug": "libtor",
    "operator": "Tajoura Nuclear Research Centre",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.115,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:libtor-plasma-current",
    "subject": "facility:libtor",
    "subjectName": "LIBTOR",
    "subjectSlug": "libtor",
    "operator": "Tajoura Nuclear Research Centre",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 0.12,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:libtor-magnetic-field-onaxis",
    "subject": "facility:libtor",
    "subjectName": "LIBTOR",
    "subjectSlug": "libtor",
    "operator": "Tajoura Nuclear Research Centre",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 4,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:mast-u-major-radius",
    "subject": "facility:mast-u",
    "subjectName": "MAST-U",
    "subjectSlug": "mast-u",
    "operator": "UK Atomic Energy Authority",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.85,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:mast-u-minor-radius",
    "subject": "facility:mast-u",
    "subjectName": "MAST-U",
    "subjectSlug": "mast-u",
    "operator": "UK Atomic Energy Authority",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.65,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:mast-u-plasma-current",
    "subject": "facility:mast-u",
    "subjectName": "MAST-U",
    "subjectSlug": "mast-u",
    "operator": "UK Atomic Energy Authority",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 2,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:mast-u-magnetic-field-onaxis",
    "subject": "facility:mast-u",
    "subjectName": "MAST-U",
    "subjectSlug": "mast-u",
    "operator": "UK Atomic Energy Authority",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 0.52,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:mast-u-plasma-duration",
    "subject": "facility:mast-u",
    "subjectName": "MAST-U",
    "subjectSlug": "mast-u",
    "operator": "UK Atomic Energy Authority",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 5,
    "unit": "s",
    "qualifier": "nominal",
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:medusa-cr-major-radius",
    "subject": "facility:medusa-cr",
    "subjectName": "MEDUSA-CR",
    "subjectSlug": "medusa-cr",
    "operator": "Instituto Tecnologico de Costa Rica",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.14,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:medusa-cr-minor-radius",
    "subject": "facility:medusa-cr",
    "subjectName": "MEDUSA-CR",
    "subjectSlug": "medusa-cr",
    "operator": "Instituto Tecnologico de Costa Rica",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.1,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:medusa-cr-plasma-current",
    "subject": "facility:medusa-cr",
    "subjectName": "MEDUSA-CR",
    "subjectSlug": "medusa-cr",
    "operator": "Instituto Tecnologico de Costa Rica",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 0.04,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:medusa-cr-magnetic-field-onaxis",
    "subject": "facility:medusa-cr",
    "subjectName": "MEDUSA-CR",
    "subjectSlug": "medusa-cr",
    "operator": "Instituto Tecnologico de Costa Rica",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 0.5,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:medusa-cr-plasma-duration",
    "subject": "facility:medusa-cr",
    "subjectName": "MEDUSA-CR",
    "subjectSlug": "medusa-cr",
    "operator": "Instituto Tecnologico de Costa Rica",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 0.003,
    "unit": "s",
    "qualifier": "nominal",
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:mt-1-major-radius",
    "subject": "facility:mt-1",
    "subjectName": "MT-1",
    "subjectSlug": "mt-1",
    "operator": "Pakistan Atomic Energy Commission",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.25,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:mt-1-minor-radius",
    "subject": "facility:mt-1",
    "subjectName": "MT-1",
    "subjectSlug": "mt-1",
    "operator": "Pakistan Atomic Energy Commission",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.1,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:mt-1-plasma-current",
    "subject": "facility:mt-1",
    "subjectName": "MT-1",
    "subjectSlug": "mt-1",
    "operator": "Pakistan Atomic Energy Commission",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 0.015,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:mt-1-magnetic-field-onaxis",
    "subject": "facility:mt-1",
    "subjectName": "MT-1",
    "subjectSlug": "mt-1",
    "operator": "Pakistan Atomic Energy Commission",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 1.2,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:mt-1-plasma-duration",
    "subject": "facility:mt-1",
    "subjectName": "MT-1",
    "subjectSlug": "mt-1",
    "operator": "Pakistan Atomic Energy Commission",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 0.008,
    "unit": "s",
    "qualifier": "nominal",
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:nif-n221204-gain-wallplug",
    "subject": "facility:nif",
    "subjectName": "National Ignition Facility",
    "subjectSlug": "national-ignition-facility",
    "operator": "Lawrence Livermore National Laboratory",
    "metric": "metric:gain-wallplug",
    "metricLabel": "Wall-plug gain",
    "metricFull": "Wall-plug gain",
    "denominator": "Total facility grid energy drawn for the shot",
    "numerator": "Total fusion energy yield",
    "value": 0.0077,
    "unit": "1",
    "qualifier": null,
    "date": "2022-12-05",
    "status": "claimed",
    "shotId": "N221204",
    "simulated": false,
    "isGain": true,
    "evidence": {
     "confidence": "medium",
     "verified": true,
     "verifiedFields": [],
     "note": "Computed as 3.1 MJ yield (peer-reviewed) over 400 MJ stored per shot, the latter quoted verbatim from LLNL: \"the power conditioning system stores approximately 400 megajoules of electrical energy for each NIF shot\". Previously 0.01, derived from a ~300 MJ figure that traced only to secondary reporting. IMPORTANT — read the denominator carefully. 400 MJ is the LASER CAPACITOR BANK, not total facility grid draw: it excludes cooling, controls, cryogenics and target fabrication. True facility draw is therefore HIGHER, which makes this value an UPPER BOUND on wall-plug gain. The real figure is lower than 0.0078. Held at medium confidence and NOT promoted to achieved: it is a derived ratio across two sources rather than a reported measurement, and its denominator is an acknowledged approximation.",
     "sources": [
      {
       "id": "src:llnl-power-conditioning",
       "title": "Power Conditioning System",
       "url": "https://lasers.llnl.gov/about/how-nif-works/power-conditioning-system",
       "independence": "operator",
       "type": "official"
      },
      {
       "id": "src:abu-shawareb-2024-prl",
       "title": "Achievement of Target Gain Larger than Unity in an Inertial Fusion Experiment",
       "url": "https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.132.065102",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:north-major-radius",
    "subject": "facility:north",
    "subjectName": "NORTH",
    "subjectSlug": "north",
    "operator": "Technical University of Denmark",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.25,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:north-magnetic-field-onaxis",
    "subject": "facility:north",
    "subjectName": "NORTH",
    "subjectSlug": "north",
    "operator": "Technical University of Denmark",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 0.3,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:nova-furg-major-radius",
    "subject": "facility:nova-furg",
    "subjectName": "NOVA-FURG",
    "subjectSlug": "nova-furg",
    "operator": "Federal University of Espírito Santo",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.3,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:nova-furg-minor-radius",
    "subject": "facility:nova-furg",
    "subjectName": "NOVA-FURG",
    "subjectSlug": "nova-furg",
    "operator": "Federal University of Espírito Santo",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.06,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:nova-furg-plasma-current",
    "subject": "facility:nova-furg",
    "subjectName": "NOVA-FURG",
    "subjectSlug": "nova-furg",
    "operator": "Federal University of Espírito Santo",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 0.01,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:nova-furg-magnetic-field-onaxis",
    "subject": "facility:nova-furg",
    "subjectName": "NOVA-FURG",
    "subjectSlug": "nova-furg",
    "operator": "Federal University of Espírito Santo",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 1,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:nova-furg-plasma-duration",
    "subject": "facility:nova-furg",
    "subjectName": "NOVA-FURG",
    "subjectSlug": "nova-furg",
    "operator": "Federal University of Espírito Santo",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 0.015,
    "unit": "s",
    "qualifier": "nominal",
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:nstx-u-major-radius",
    "subject": "facility:nstx-u",
    "subjectName": "NSTX-U",
    "subjectSlug": "nstx-u",
    "operator": "Princeton Plasma Physics Laboratory",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.934,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:nstx-u-minor-radius",
    "subject": "facility:nstx-u",
    "subjectName": "NSTX-U",
    "subjectSlug": "nstx-u",
    "operator": "Princeton Plasma Physics Laboratory",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.68,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:nstx-u-plasma-current",
    "subject": "facility:nstx-u",
    "subjectName": "NSTX-U",
    "subjectSlug": "nstx-u",
    "operator": "Princeton Plasma Physics Laboratory",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 2,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:nstx-u-magnetic-field-onaxis",
    "subject": "facility:nstx-u",
    "subjectName": "NSTX-U",
    "subjectSlug": "nstx-u",
    "operator": "Princeton Plasma Physics Laboratory",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 1,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:nstx-u-plasma-duration",
    "subject": "facility:nstx-u",
    "subjectName": "NSTX-U",
    "subjectSlug": "nstx-u",
    "operator": "Princeton Plasma Physics Laboratory",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 5,
    "unit": "s",
    "qualifier": "nominal",
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:pegasus-iii-major-radius",
    "subject": "facility:pegasus-iii",
    "subjectName": "PEGASUS-III",
    "subjectSlug": "pegasus-iii",
    "operator": "University of Wisconsin-Madison",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.45,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:pegasus-iii-minor-radius",
    "subject": "facility:pegasus-iii",
    "subjectName": "PEGASUS-III",
    "subjectSlug": "pegasus-iii",
    "operator": "University of Wisconsin-Madison",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.37,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:pegasus-iii-plasma-current",
    "subject": "facility:pegasus-iii",
    "subjectName": "PEGASUS-III",
    "subjectSlug": "pegasus-iii",
    "operator": "University of Wisconsin-Madison",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 1,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:pegasus-iii-magnetic-field-onaxis",
    "subject": "facility:pegasus-iii",
    "subjectName": "PEGASUS-III",
    "subjectSlug": "pegasus-iii",
    "operator": "University of Wisconsin-Madison",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 0.58,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:phix-major-radius",
    "subject": "facility:phix",
    "subjectName": "PHIX",
    "subjectSlug": "phix",
    "operator": "Tokyo Institute of Technology",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.33,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:phix-minor-radius",
    "subject": "facility:phix",
    "subjectName": "PHIX",
    "subjectSlug": "phix",
    "operator": "Tokyo Institute of Technology",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.09,
    "unit": "m",
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    "numerator": null,
    "value": 2.43,
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    "date": null,
    "status": "claimed",
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    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
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       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:t-15md-minor-radius",
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    "subjectName": "T-15MD",
    "subjectSlug": "t-15md",
    "operator": "National Research Centre Kurchatov Institute",
    "metric": "metric:minor-radius",
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     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
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       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:t-15md-plasma-current",
    "subject": "facility:t-15md",
    "subjectName": "T-15MD",
    "subjectSlug": "t-15md",
    "operator": "National Research Centre Kurchatov Institute",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
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    "numerator": null,
    "value": 1,
    "unit": "MA",
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     "verifiedFields": [],
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     "sources": [
      {
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       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:t-15md-magnetic-field-onaxis",
    "subject": "facility:t-15md",
    "subjectName": "T-15MD",
    "subjectSlug": "t-15md",
    "operator": "National Research Centre Kurchatov Institute",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
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    "numerator": null,
    "value": 3.5,
    "unit": "T",
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    "evidence": {
     "confidence": "medium",
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     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
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       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:t-15md-plasma-duration",
    "subject": "facility:t-15md",
    "subjectName": "T-15MD",
    "subjectSlug": "t-15md",
    "operator": "National Research Centre Kurchatov Institute",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
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    "value": 30,
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     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
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       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:tcabr-major-radius",
    "subject": "facility:tcabr",
    "subjectName": "TCABR",
    "subjectSlug": "tcabr",
    "operator": "University of São Paulo",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.61,
    "unit": "m",
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    "evidence": {
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     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
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       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:tcabr-minor-radius",
    "subject": "facility:tcabr",
    "subjectName": "TCABR",
    "subjectSlug": "tcabr",
    "operator": "University of São Paulo",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.18,
    "unit": "m",
    "qualifier": null,
    "date": null,
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    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:tcabr-plasma-current",
    "subject": "facility:tcabr",
    "subjectName": "TCABR",
    "subjectSlug": "tcabr",
    "operator": "University of São Paulo",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 0.1,
    "unit": "MA",
    "qualifier": null,
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    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:tcabr-magnetic-field-onaxis",
    "subject": "facility:tcabr",
    "subjectName": "TCABR",
    "subjectSlug": "tcabr",
    "operator": "University of São Paulo",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 1.07,
    "unit": "T",
    "qualifier": null,
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     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
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       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:tcabr-plasma-duration",
    "subject": "facility:tcabr",
    "subjectName": "TCABR",
    "subjectSlug": "tcabr",
    "operator": "University of São Paulo",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 0.1,
    "unit": "s",
    "qualifier": "nominal",
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:tcv-major-radius",
    "subject": "facility:tcv",
    "subjectName": "TCV",
    "subjectSlug": "tcv",
    "operator": "Swiss Plasma Center",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.89,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:tcv-minor-radius",
    "subject": "facility:tcv",
    "subjectName": "TCV",
    "subjectSlug": "tcv",
    "operator": "Swiss Plasma Center",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.25,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
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    "simulated": false,
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    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:tcv-plasma-current",
    "subject": "facility:tcv",
    "subjectName": "TCV",
    "subjectSlug": "tcv",
    "operator": "Swiss Plasma Center",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 1.2,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:tcv-magnetic-field-onaxis",
    "subject": "facility:tcv",
    "subjectName": "TCV",
    "subjectSlug": "tcv",
    "operator": "Swiss Plasma Center",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 1.54,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
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    "simulated": false,
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    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:tftr-ion-temperature",
    "subject": "facility:tftr",
    "subjectName": "Tokamak Fusion Test Reactor",
    "subjectSlug": "tftr",
    "operator": "Princeton Plasma Physics Laboratory",
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 510000000,
    "unit": "K",
    "qualifier": null,
    "date": null,
    "status": "claimed",
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    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "PPPL: \"a plasma temperature of 510 million degrees centigrade -- the highest ever produced in a laboratory\". No date is given on the page, so none is recorded. Roughly 44 keV. PEAK, not sustained — the distinction the registry requires.",
     "sources": [
      {
       "id": "src:pppl-tftr",
       "title": "Tokamak Fusion Test Reactor",
       "url": "https://www.pppl.gov/tokamak-fusion-test-reactor",
       "independence": "operator",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:tj-ii-major-radius",
    "subject": "facility:tj-ii",
    "subjectName": "TJ-II",
    "subjectSlug": "tj-ii",
    "operator": "CIEMAT",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 1.5,
    "unit": "m",
    "qualifier": null,
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    "evidence": {
     "confidence": "medium",
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     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:tj-ii-minor-radius",
    "subject": "facility:tj-ii",
    "subjectName": "TJ-II",
    "subjectSlug": "tj-ii",
    "operator": "CIEMAT",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.22,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
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    "simulated": false,
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    "evidence": {
     "confidence": "medium",
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     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
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       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:tj-ii-magnetic-field-onaxis",
    "subject": "facility:tj-ii",
    "subjectName": "TJ-II",
    "subjectSlug": "tj-ii",
    "operator": "CIEMAT",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 0.95,
    "unit": "T",
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     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
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      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:tj-k-major-radius",
    "subject": "facility:tj-k",
    "subjectName": "TJ-K",
    "subjectSlug": "tj-k",
    "operator": "University of Stuttgart",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.6,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
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     "confidence": "medium",
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     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:tj-k-minor-radius",
    "subject": "facility:tj-k",
    "subjectName": "TJ-K",
    "subjectSlug": "tj-k",
    "operator": "University of Stuttgart",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.1,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
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     "confidence": "medium",
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     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:tj-k-magnetic-field-onaxis",
    "subject": "facility:tj-k",
    "subjectName": "TJ-K",
    "subjectSlug": "tj-k",
    "operator": "University of Stuttgart",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 0.07,
    "unit": "T",
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     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:tokastar-2-major-radius",
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    "subjectName": "TOKASTAR-2",
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     ]
    }
   },
   {
    "id": "meas:uragan-2m-major-radius",
    "subject": "facility:uragan-2m",
    "subjectName": "URAGAN-2M",
    "subjectSlug": "uragan-2m",
    "operator": "Institute of Plasma Physics National Science Center",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 1.7,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:uragan-2m-minor-radius",
    "subject": "facility:uragan-2m",
    "subjectName": "URAGAN-2M",
    "subjectSlug": "uragan-2m",
    "operator": "Institute of Plasma Physics National Science Center",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.22,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:uragan-2m-magnetic-field-onaxis",
    "subject": "facility:uragan-2m",
    "subjectName": "URAGAN-2M",
    "subjectSlug": "uragan-2m",
    "operator": "Institute of Plasma Physics National Science Center",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 2.4,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:uragan-3m-major-radius",
    "subject": "facility:uragan-3m",
    "subjectName": "URAGAN-3M",
    "subjectSlug": "uragan-3m",
    "operator": "Institute of Plasma Physics National Science Center",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 1,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:uragan-3m-minor-radius",
    "subject": "facility:uragan-3m",
    "subjectName": "URAGAN-3M",
    "subjectSlug": "uragan-3m",
    "operator": "Institute of Plasma Physics National Science Center",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.12,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:uragan-3m-magnetic-field-onaxis",
    "subject": "facility:uragan-3m",
    "subjectName": "URAGAN-3M",
    "subjectSlug": "uragan-3m",
    "operator": "Institute of Plasma Physics National Science Center",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 0.7,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:utst-major-radius",
    "subject": "facility:utst",
    "subjectName": "UTST",
    "subjectSlug": "utst",
    "operator": "The University of Tokyo",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.35,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:utst-minor-radius",
    "subject": "facility:utst",
    "subjectName": "UTST",
    "subjectSlug": "utst",
    "operator": "The University of Tokyo",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.2,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:utst-plasma-current",
    "subject": "facility:utst",
    "subjectName": "UTST",
    "subjectSlug": "utst",
    "operator": "The University of Tokyo",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 0.1,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:utst-magnetic-field-onaxis",
    "subject": "facility:utst",
    "subjectName": "UTST",
    "subjectSlug": "utst",
    "operator": "The University of Tokyo",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 0.25,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:utst-plasma-duration",
    "subject": "facility:utst",
    "subjectName": "UTST",
    "subjectSlug": "utst",
    "operator": "The University of Tokyo",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 0.01,
    "unit": "s",
    "qualifier": "nominal",
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:vest-major-radius",
    "subject": "facility:vest",
    "subjectName": "VEST",
    "subjectSlug": "vest",
    "operator": "Seoul National University",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.45,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:vest-minor-radius",
    "subject": "facility:vest",
    "subjectName": "VEST",
    "subjectSlug": "vest",
    "operator": "Seoul National University",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.33,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:vest-plasma-current",
    "subject": "facility:vest",
    "subjectName": "VEST",
    "subjectSlug": "vest",
    "operator": "Seoul National University",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 0.1,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:vest-magnetic-field-onaxis",
    "subject": "facility:vest",
    "subjectName": "VEST",
    "subjectSlug": "vest",
    "operator": "Seoul National University",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 0.1,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as claimed rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:w7x-op12-triple-product",
    "subject": "facility:w7x",
    "subjectName": "Wendelstein 7-X",
    "subjectSlug": "wendelstein-7-x",
    "operator": "Max Planck Institute for Plasma Physics",
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 6e+26,
    "unit": "K m^-3 s",
    "qualifier": null,
    "date": "2018-06",
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Stated by IPP as \"a good 6 x 10^26 degrees x second per cubic metre, the world's stellarator record\". Unit recorded as the source gives it; the registry canonicalises to keV-based units and the build derives valueCanonical. THE THREE INPUTS COME FROM THE SAME PLASMA — ion temperature, density and this product appear in one sentence about one campaign, which is the condition a triple product requires and the reason no earlier attempt could be recorded.",
     "sources": [
      {
       "id": "src:ipp-w7x-triple-product",
       "title": "Wendelstein 7-X attains world record for fusion product",
       "url": "http://www.ipp.mpg.de/4413312/04_18",
       "independence": "operator",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:w7x-op12-ion-temperature",
    "subject": "facility:w7x",
    "subjectName": "Wendelstein 7-X",
    "subjectSlug": "wendelstein-7-x",
    "operator": "Max Planck Institute for Plasma Physics",
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 40000000,
    "unit": "K",
    "qualifier": null,
    "date": "2018-06",
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "IPP: \"an ion temperature of about 40 million degrees\". Approximate in the source (\"about\"), and recorded as such. Roughly 3.4 keV.",
     "sources": [
      {
       "id": "src:ipp-w7x-triple-product",
       "title": "Wendelstein 7-X attains world record for fusion product",
       "url": "http://www.ipp.mpg.de/4413312/04_18",
       "independence": "operator",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:w7x-op12-plasma-density",
    "subject": "facility:w7x",
    "subjectName": "Wendelstein 7-X",
    "subjectSlug": "wendelstein-7-x",
    "operator": "Max Planck Institute for Plasma Physics",
    "metric": "metric:plasma-density",
    "metricLabel": "Plasma density",
    "metricFull": "Plasma density",
    "denominator": null,
    "numerator": null,
    "value": 80000000000000000000,
    "unit": "m^-3",
    "qualifier": null,
    "date": "2018-06",
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "IPP: \"a density of 0.8 x 10^20 particles per cubic metre\". Same plasma as the triple product and ion temperature above.",
     "sources": [
      {
       "id": "src:ipp-w7x-triple-product",
       "title": "Wendelstein 7-X attains world record for fusion product",
       "url": "http://www.ipp.mpg.de/4413312/04_18",
       "independence": "operator",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:w7x-op12-plasma-duration",
    "subject": "facility:w7x",
    "subjectName": "Wendelstein 7-X",
    "subjectSlug": "wendelstein-7-x",
    "operator": "Max Planck Institute for Plasma Physics",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 26,
    "unit": "s",
    "qualifier": null,
    "date": "2018-06",
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "IPP: \"plasmas lasting up to 26 seconds are now being produced\". This is PLASMA DURATION, not energy confinement time — they differ by orders of magnitude and are routinely conflated.",
     "sources": [
      {
       "id": "src:ipp-w7x-triple-product",
       "title": "Wendelstein 7-X attains world record for fusion product",
       "url": "http://www.ipp.mpg.de/4413312/04_18",
       "independence": "operator",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:w7x-duration",
    "subject": "facility:w7x",
    "subjectName": "Wendelstein 7-X",
    "subjectSlug": "wendelstein-7-x",
    "operator": "Max Planck Institute for Plasma Physics",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 480,
    "unit": "s",
    "qualifier": "sustained",
    "date": "2023-02",
    "status": "claimed",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "low",
     "verified": false,
     "verifiedFields": [],
     "note": "Eight-minute discharge. Stellarators are steady-state by construction, so duration means something different here than for a pulsed tokamak — a comparison table must say so.",
     "sources": [
      {
       "id": "src:w7x-ipp",
       "title": "Wendelstein 7-X | Max-Planck-Institut für Plasmaphysik",
       "url": "https://www.ipp.mpg.de/w7x",
       "independence": "operator",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:wendelstein-7-x-major-radius",
    "subject": "facility:w7x",
    "subjectName": "Wendelstein 7-X",
    "subjectSlug": "wendelstein-7-x",
    "operator": "Max Planck Institute for Plasma Physics",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 5.5,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "claimed",
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   },
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   {
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   },
   {
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   },
   {
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     ]
    }
   },
   {
    "id": "meas:compass-u-plasma-current",
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    "metric": "metric:plasma-current",
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   },
   {
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    }
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     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason. Source gives a range (1–3 s (up to 11 s in lower single null plasmas)); the upper bound is recorded.",
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   },
   {
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   },
   {
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     ]
    }
   },
   {
    "id": "meas:iter-gain-target-planned",
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    "subjectName": "ITER",
    "subjectSlug": "iter",
    "operator": "ITER Organization",
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    "numerator": "Fusion power produced",
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    "simulated": false,
    "isGain": true,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "ITER design point: 500 MW fusion from 50 MW of injected heating. A TARGET. Permanently ineligible for any achieved leaderboard.",
     "sources": [
      {
       "id": "src:iter-machine",
       "title": "The machine",
       "url": "https://www.iter.org/machine",
       "independence": "operator",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:iter-major-radius",
    "subject": "facility:iter",
    "subjectName": "ITER",
    "subjectSlug": "iter",
    "operator": "ITER Organization",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 6.2,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:iter-minor-radius",
    "subject": "facility:iter",
    "subjectName": "ITER",
    "subjectSlug": "iter",
    "operator": "ITER Organization",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 2,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:iter-plasma-current",
    "subject": "facility:iter",
    "subjectName": "ITER",
    "subjectSlug": "iter",
    "operator": "ITER Organization",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 15,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:iter-magnetic-field-onaxis",
    "subject": "facility:iter",
    "subjectName": "ITER",
    "subjectSlug": "iter",
    "operator": "ITER Organization",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 5.3,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:iter-plasma-duration",
    "subject": "facility:iter",
    "subjectName": "ITER",
    "subjectSlug": "iter",
    "operator": "ITER Organization",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 3000,
    "unit": "s",
    "qualifier": "nominal",
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:sparc-lawson-triple-product",
    "subject": "facility:sparc",
    "subjectName": "SPARC",
    "subjectSlug": "sparc",
    "operator": "Commonwealth Fusion Systems",
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 6.2e+21,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": "Projected",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot Projected, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. PROJECTED, not achieved: the compilation lists this device as a projection, so it is recorded as planned and is excluded from every ranking. ",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:sparc-lawson-ion-temperature",
    "subject": "facility:sparc",
    "subjectName": "SPARC",
    "subjectSlug": "sparc",
    "operator": "Commonwealth Fusion Systems",
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 20,
    "unit": "keV",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": "Projected",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot Projected, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. PROJECTED, not achieved: the compilation lists this device as a projection, so it is recorded as planned and is excluded from every ranking. ",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:sparc-lawson-plasma-density",
    "subject": "facility:sparc",
    "subjectName": "SPARC",
    "subjectSlug": "sparc",
    "operator": "Commonwealth Fusion Systems",
    "metric": "metric:plasma-density",
    "metricLabel": "Plasma density",
    "metricFull": "Plasma density",
    "denominator": null,
    "numerator": null,
    "value": 400000000000000000000,
    "unit": "m^-3",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": "Projected",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion density for shot Projected, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. PROJECTED, not achieved: the compilation lists this device as a projection, so it is recorded as planned and is excluded from every ranking. ",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:sparc-lawson-energy-confinement-time",
    "subject": "facility:sparc",
    "subjectName": "SPARC",
    "subjectSlug": "sparc",
    "operator": "Commonwealth Fusion Systems",
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 0.77,
    "unit": "s",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": "Projected",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot Projected, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. PROJECTED, not achieved: the compilation lists this device as a projection, so it is recorded as planned and is excluded from every ranking. ",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:iter-lawson-triple-product",
    "subject": "facility:iter",
    "subjectName": "ITER",
    "subjectSlug": "iter",
    "operator": "ITER Organization",
    "metric": "metric:triple-product",
    "metricLabel": "nTτ",
    "metricFull": "Fusion triple product (nTτ_E)",
    "denominator": null,
    "numerator": null,
    "value": 7.4e+21,
    "unit": "m^-3 keV s",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": "Projected",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Fusion triple product n·T·τE for shot Projected, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. PROJECTED, not achieved: the compilation lists this device as a projection, so it is recorded as planned and is excluded from every ranking. ",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:iter-lawson-ion-temperature",
    "subject": "facility:iter",
    "subjectName": "ITER",
    "subjectSlug": "iter",
    "operator": "ITER Organization",
    "metric": "metric:ion-temperature",
    "metricLabel": "Ion temperature",
    "metricFull": "Ion temperature",
    "denominator": null,
    "numerator": null,
    "value": 20,
    "unit": "keV",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": "Projected",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion temperature for shot Projected, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. PROJECTED, not achieved: the compilation lists this device as a projection, so it is recorded as planned and is excluded from every ranking. ",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:iter-lawson-plasma-density",
    "subject": "facility:iter",
    "subjectName": "ITER",
    "subjectSlug": "iter",
    "operator": "ITER Organization",
    "metric": "metric:plasma-density",
    "metricLabel": "Plasma density",
    "metricFull": "Plasma density",
    "denominator": null,
    "numerator": null,
    "value": 100000000000000000000,
    "unit": "m^-3",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": "Projected",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Central ion density for shot Projected, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. PROJECTED, not achieved: the compilation lists this device as a projection, so it is recorded as planned and is excluded from every ranking. ",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:iter-lawson-energy-confinement-time",
    "subject": "facility:iter",
    "subjectName": "ITER",
    "subjectSlug": "iter",
    "operator": "ITER Organization",
    "metric": "metric:energy-confinement-time",
    "metricLabel": "Energy confinement time (τ_E)",
    "metricFull": "Energy confinement time (τ_E)",
    "denominator": null,
    "numerator": null,
    "value": 3.7,
    "unit": "s",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": "Projected",
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": false,
     "verifiedFields": [],
     "note": "Energy confinement time for shot Projected, from Table 3 of Wurzel & Hsu, which cites its own primary reference for this row. All inputs measured rather than inferred. PROJECTED, not achieved: the compilation lists this device as a projection, so it is recorded as planned and is excluded from every ranking. ",
     "sources": [
      {
       "id": "src:wurzel-hsu-lawson-full",
       "title": "Continuing progress toward fusion energy breakeven and gain as measured against the Lawson criteria",
       "url": "https://arxiv.org/abs/2505.03834",
       "independence": "independent",
       "type": "peer-reviewed"
      }
     ]
    }
   },
   {
    "id": "meas:plato-major-radius",
    "subject": "facility:plato",
    "subjectName": "PLATO",
    "subjectSlug": "plato",
    "operator": "Kyushu University",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.7,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:plato-minor-radius",
    "subject": "facility:plato",
    "subjectName": "PLATO",
    "subjectSlug": "plato",
    "operator": "Kyushu University",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.25,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:plato-plasma-current",
    "subject": "facility:plato",
    "subjectName": "PLATO",
    "subjectSlug": "plato",
    "operator": "Kyushu University",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 0.075,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:plato-magnetic-field-onaxis",
    "subject": "facility:plato",
    "subjectName": "PLATO",
    "subjectSlug": "plato",
    "operator": "Kyushu University",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 0.3,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:plato-plasma-duration",
    "subject": "facility:plato",
    "subjectName": "PLATO",
    "subjectSlug": "plato",
    "operator": "Kyushu University",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 0.2,
    "unit": "s",
    "qualifier": "nominal",
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:pst-major-radius",
    "subject": "facility:pst",
    "subjectName": "PST",
    "subjectSlug": "pst",
    "operator": "Pakistan Atomic Energy Commission",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.5,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:pst-minor-radius",
    "subject": "facility:pst",
    "subjectName": "PST",
    "subjectSlug": "pst",
    "operator": "Pakistan Atomic Energy Commission",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.25,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:pst-plasma-current",
    "subject": "facility:pst",
    "subjectName": "PST",
    "subjectSlug": "pst",
    "operator": "Pakistan Atomic Energy Commission",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 0.31,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:pst-magnetic-field-onaxis",
    "subject": "facility:pst",
    "subjectName": "PST",
    "subjectSlug": "pst",
    "operator": "Pakistan Atomic Energy Commission",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 0.5,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:smart-major-radius",
    "subject": "facility:smart",
    "subjectName": "SMART",
    "subjectSlug": "smart",
    "operator": "University of Seville",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.4,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:smart-minor-radius",
    "subject": "facility:smart",
    "subjectName": "SMART",
    "subjectSlug": "smart",
    "operator": "University of Seville",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.25,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:smart-plasma-current",
    "subject": "facility:smart",
    "subjectName": "SMART",
    "subjectSlug": "smart",
    "operator": "University of Seville",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 2,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:smart-magnetic-field-onaxis",
    "subject": "facility:smart",
    "subjectName": "SMART",
    "subjectSlug": "smart",
    "operator": "University of Seville",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 2,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:smart-plasma-duration",
    "subject": "facility:smart",
    "subjectName": "SMART",
    "subjectSlug": "smart",
    "operator": "University of Seville",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 2,
    "unit": "s",
    "qualifier": "nominal",
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason. Source gives a range (Phase 2 – 0.1 s); the upper bound is recorded.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:sparc-gain-planned",
    "subject": "facility:sparc",
    "subjectName": "SPARC",
    "subjectSlug": "sparc",
    "operator": "Commonwealth Fusion Systems",
    "metric": "metric:gain-plasma",
    "metricLabel": "Q_plasma",
    "metricFull": "Plasma gain (Q_plasma)",
    "denominator": "External heating power coupled into the plasma",
    "numerator": "Fusion power produced",
    "value": 2,
    "unit": "1",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": true,
    "evidence": {
     "confidence": "low",
     "verified": false,
     "verifiedFields": [],
     "note": "CFS states SPARC is designed to exceed Q=1, with higher figures discussed. Recorded conservatively as the stated threshold rather than the optimistic case — a planned value should not flatter.",
     "sources": [
      {
       "id": "src:sparc-cfs",
       "title": "SPARC: Proving commercial fusion energy is possible | Commonwealth Fusion Systems",
       "url": "https://cfs.energy/technology/sparc/",
       "independence": "operator",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:sparc-major-radius",
    "subject": "facility:sparc",
    "subjectName": "SPARC",
    "subjectSlug": "sparc",
    "operator": "Commonwealth Fusion Systems",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 1.85,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:sparc-minor-radius",
    "subject": "facility:sparc",
    "subjectName": "SPARC",
    "subjectSlug": "sparc",
    "operator": "Commonwealth Fusion Systems",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.57,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
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     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:sparc-plasma-current",
    "subject": "facility:sparc",
    "subjectName": "SPARC",
    "subjectSlug": "sparc",
    "operator": "Commonwealth Fusion Systems",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 8.7,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "planned",
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    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:sparc-magnetic-field-onaxis",
    "subject": "facility:sparc",
    "subjectName": "SPARC",
    "subjectSlug": "sparc",
    "operator": "Commonwealth Fusion Systems",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 12.2,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:ssst-major-radius",
    "subject": "facility:ssst",
    "subjectName": "SSST",
    "subjectSlug": "ssst",
    "operator": "Institute for Plasma Research",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.28,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "planned",
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    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:ssst-minor-radius",
    "subject": "facility:ssst",
    "subjectName": "SSST",
    "subjectSlug": "ssst",
    "operator": "Institute for Plasma Research",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.16,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
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     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:ssst-plasma-current",
    "subject": "facility:ssst",
    "subjectName": "SSST",
    "subjectSlug": "ssst",
    "operator": "Institute for Plasma Research",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 0.028,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:ssst-magnetic-field-onaxis",
    "subject": "facility:ssst",
    "subjectName": "SSST",
    "subjectSlug": "ssst",
    "operator": "Institute for Plasma Research",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 0.15,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:tt-1-major-radius",
    "subject": "facility:tt-1",
    "subjectName": "TT-1",
    "subjectSlug": "tt-1",
    "operator": "Thailand Institute of Nuclear Technology",
    "metric": "metric:major-radius",
    "metricLabel": "R0",
    "metricFull": "Major radius",
    "denominator": null,
    "numerator": null,
    "value": 0.65,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:tt-1-minor-radius",
    "subject": "facility:tt-1",
    "subjectName": "TT-1",
    "subjectSlug": "tt-1",
    "operator": "Thailand Institute of Nuclear Technology",
    "metric": "metric:minor-radius",
    "metricLabel": "a",
    "metricFull": "Minor radius",
    "denominator": null,
    "numerator": null,
    "value": 0.2,
    "unit": "m",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:tt-1-plasma-current",
    "subject": "facility:tt-1",
    "subjectName": "TT-1",
    "subjectSlug": "tt-1",
    "operator": "Thailand Institute of Nuclear Technology",
    "metric": "metric:plasma-current",
    "metricLabel": "Plasma current",
    "metricFull": "Plasma current",
    "denominator": null,
    "numerator": null,
    "value": 0.1,
    "unit": "MA",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:tt-1-magnetic-field-onaxis",
    "subject": "facility:tt-1",
    "subjectName": "TT-1",
    "subjectSlug": "tt-1",
    "operator": "Thailand Institute of Nuclear Technology",
    "metric": "metric:magnetic-field-onaxis",
    "metricLabel": "On-axis magnetic field",
    "metricFull": "On-axis magnetic field",
    "denominator": null,
    "numerator": null,
    "value": 1.52,
    "unit": "T",
    "qualifier": null,
    "date": null,
    "status": "planned",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": false,
     "verifiedFields": [],
     "note": "Design parameter from the IAEA World Survey of Fusion Devices, not a shot result — recorded as planned rather than achieved for that reason.",
     "sources": [
      {
       "id": "src:iaea-world-survey",
       "title": "World Survey of Fusion Devices 2022",
       "url": "https://www-pub.iaea.org/MTCD/Publications/PDF/CRCP-FUS-001webRev.pdf",
       "independence": "independent",
       "type": "official"
      }
     ]
    }
   }
  ],
  "superseded": [
   {
    "id": "meas:east-403s-duration",
    "subject": "facility:east",
    "subjectName": "Experimental Advanced Superconducting Tokamak",
    "subjectSlug": "east",
    "operator": "Institute of Plasma Physics, Chinese Academy of Sciences",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 403,
    "unit": "s",
    "qualifier": "sustained",
    "date": "2023",
    "status": "superseded",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": true,
     "verifiedFields": [],
     "note": "Both captured sources state the previous record was 403 seconds, set by EAST in 2023. Year precision only — neither gives a date.",
     "sources": [
      {
       "id": "src:cas-east-1066",
       "title": "Chinese \"Artificial Sun\" Sets New Record in Milestone Step Toward Fusion Power Generation",
       "url": "https://english.cas.cn/newsroom/cas_media/202501/t20250121_899052.shtml",
       "independence": "operator",
       "type": "press-release"
      },
      {
       "id": "src:physicsworld-east",
       "title": "China’s Experimental Advanced Superconducting Tokamak smashes fusion confinement record",
       "url": "https://physicsworld.com/a/chinas-experimental-advanced-superconducting-tokamak-smashes-fusion-confinement-record/",
       "independence": "independent",
       "type": "news"
      }
     ]
    }
   },
   {
    "id": "meas:jet-dte2-yield",
    "subject": "facility:jet",
    "subjectName": "Joint European Torus",
    "subjectSlug": "joint-european-torus",
    "operator": "UK Atomic Energy Authority",
    "metric": "metric:fusion-energy-yield",
    "metricLabel": "Fusion energy yield",
    "metricFull": "Fusion energy yield",
    "denominator": null,
    "numerator": null,
    "value": 59,
    "unit": "MJ",
    "qualifier": null,
    "date": "2022",
    "status": "superseded",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "medium",
     "verified": true,
     "verifiedFields": [],
     "note": "EUROfusion states \"previous world records of 59 megajoules (2022)\". Other reporting dates the DTE2 campaign to December 2021 with the announcement in February 2022. Because the captured source and common reporting disagree, only the year the source gives is recorded, at year precision.",
     "sources": [
      {
       "id": "src:eurofusion-dte3",
       "title": "JET Tokamak’s Latest Fusion Energy Record Shows Mastery of Fusion Processes",
       "url": "https://euro-fusion.org/eurofusion-news/dte3record/",
       "independence": "operator",
       "type": "official"
      }
     ]
    }
   },
   {
    "id": "meas:kstar-duration",
    "subject": "facility:kstar",
    "subjectName": "KSTAR",
    "subjectSlug": "kstar",
    "operator": "Korea Institute of Fusion Energy",
    "metric": "metric:plasma-duration",
    "metricLabel": "Plasma duration",
    "metricFull": "Plasma duration",
    "denominator": null,
    "numerator": null,
    "value": 48,
    "unit": "s",
    "qualifier": "sustained",
    "date": "2024-02",
    "status": "superseded",
    "shotId": null,
    "simulated": false,
    "isGain": false,
    "evidence": {
     "confidence": "high",
     "verified": true,
     "verifiedFields": [],
     "note": "Campaign ran December 2023 to February 2024; the campaign end is recorded at month precision because no shot date is given. Superseded by the 102 s result.",
     "sources": [
      {
       "id": "src:kfe-kstar-48s",
       "title": "Green light on continuous fusion plasma operations technology",
       "url": "https://www.eurekalert.org/news-releases/1039244",
       "independence": "operator",
       "type": "press-release"
      }
     ]
    }
   }
  ]
 }
}