JT-60U
also JT-60 Upgrade
JT-60U held the world record for the fusion triple product, and reached a DT-equivalent fusion gain above unity on deuterium plasmas. It was dismantled to make way for JT-60SA.
Quoted verbatim from the IAEA World Survey of Fusion Devices, not paraphrased.
- Type
- Fusion device
- Approach
- Tokamak
- Fuel
- D-D
- Country
- JP
- Status
- Shut down
Measurements
3.1 × 10²⁰ m⁻³·keV·s Fusion triple product (nTτ_E) claimed
21.5 keV Ion temperature claimed
4.2 × 10¹⁹ m⁻³ Plasma density claimed
0.344 s Energy confinement time (τ_E) claimed
0.185 Equivalent D-T gain (extrapolated) claimed
Denominator: External heating power coupled into the plasma
5.6 × 10²⁰ m⁻³·keV·s Fusion triple product (nTτ_E) claimed
measured 1998 · shot E31872
16.8 keV Ion temperature claimed
measured 1998 · shot E31872
4.8 × 10¹⁹ m⁻³ Plasma density claimed
measured 1998 · shot E31872
0.69 s Energy confinement time (τ_E) claimed
measured 1998 · shot E31872