{
 "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 `superseded` has been beaten.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."
 },
 "files": [
  {
   "name": "meta.json",
   "description": "Licence, schema version, and how to read the status and denominator fields",
   "bytes": 1925,
   "url": "https://fusionbenchmark.com/api/meta.json"
  },
  {
   "name": "schema.json",
   "description": "The JSON Schema 2020-12 the whole dataset validates against",
   "bytes": 48393,
   "url": "https://fusionbenchmark.com/api/schema.json"
  },
  {
   "name": "vocabularies.json",
   "description": "Controlled vocabularies — metrics with numerators and denominators, approaches, fuels, roles, regulatory stages",
   "bytes": 61538,
   "url": "https://fusionbenchmark.com/api/vocabularies.json"
  },
  {
   "name": "organizations.json",
   "description": "Organisations with roles, sectors, location and provenance",
   "bytes": 2334456,
   "url": "https://fusionbenchmark.com/api/organizations.json"
  },
  {
   "name": "facilities.json",
   "description": "Devices and plants, each with its measurements inline",
   "bytes": 717764,
   "url": "https://fusionbenchmark.com/api/facilities.json"
  },
  {
   "name": "measurements.json",
   "description": "Every measurement, grouped by status",
   "bytes": 503811,
   "url": "https://fusionbenchmark.com/api/measurements.json"
  },
  {
   "name": "glossary.json",
   "description": "Defined vocabulary terms and what uses them",
   "bytes": 417307,
   "url": "https://fusionbenchmark.com/api/glossary.json"
  },
  {
   "name": "changelog.json",
   "description": "Every correction, retraction and verification, derived from the append-only ledger",
   "bytes": 69001,
   "url": "https://fusionbenchmark.com/api/changelog.json"
  },
  {
   "name": "supply.json",
   "description": "Suppliers and evidenced supply categories",
   "bytes": 78342,
   "url": "https://fusionbenchmark.com/api/supply.json"
  }
 ]
}