JT-60
JT-60 (short for Japan Torus-60) is a large research tokamak, the flagship of Japan's magnetic fusion program, previously run by the Japan Atomic Energy Research Institute (JAERI) and later by the Japan Atomic Energy Agency's (JAEA) Naka Fusion Institute in Naka, Ibaraki Prefecture. As of 2023 the device is known as JT-60SA and it is the largest operational superconducting tokamak in the world to date, and was built and is operated jointly by the European Union and Japan. SA stands for super advanced tokamak, including a D-shaped plasma cross-section, superconducting coils, and active feedback control.
| Japan Torus-60 | |
|---|---|
| Device type | Tokamak |
| Location | Naka, Ibaraki Prefecture, Japan |
| Affiliation | Japan Atomic Energy Agency |
| Technical specifications | |
| Major radius | 3.4 m (11 ft) |
| Minor radius | 1.0 m (3 ft 3 in) |
| Plasma volume | 90 m3 |
| Magnetic field | 4 T (40,000 G) (toroidal) |
| Discharge duration | 65 s |
| History | |
| Year(s) of operation | 1985–2010 |
| Preceded by | JFT-2M |
| Succeeded by | JT-60SA |
| Related devices | TFTR |
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