Joint European Torus
also JET
The main purpose of JET is to test plasma physics, systems and materials for ITER, and to study plasma behaviour in conditions and dimensions close to those of a fusion power plant.
Quoted verbatim from the IAEA World Survey of Fusion Devices, not paraphrased.
- Operator
- UK Atomic Energy Authority
- Type
- Fusion device
- Approach
- Tokamak
- Fuel
- D-T
- Country
- GB
- Status
- Shut down
- Built
- 1983
- Ownership
- public
Progression
Superseded results are kept rather than overwritten. A later figure that is lower than an earlier one is normal physics, and hiding it would be a form of falsification.
- 59 MJ 2022
- 69.26 MJ 2023-10
Measurements
69.26 MJ Fusion energy yield claimed
measured 2023-10
2.96 m Major radius claimed
1.25 m Minor radius claimed
5 MA Plasma current claimed
3.4 T On-axis magnetic field claimed
60 s Plasma duration claimed
nominal
59 MJ Fusion energy yield superseded
measured 2022
6.1 × 10²⁰ m⁻³·keV·s Fusion triple product (nTτ_E) claimed
measured 1991-11-02 · shot 26087
18.6 keV Ion temperature claimed
measured 1991-11-02 · shot 26087
4.1 × 10¹⁹ m⁻³ Plasma density claimed
measured 1991-11-02 · shot 26087
0.8 s Energy confinement time (τ_E) claimed
measured 1991-11-02 · shot 26087
0.63 Plasma gain (Q_plasma) claimed
Denominator: External heating power coupled into the plasma
measured 1997-10-31 · shot 42976