by National Institutes for Quantum Science and Technology (QST)JP
Explore advanced fusion plasma physics and demonstrate sustained, high-performance operation in preparation for ITER and future demonstration reactors.
Upgraded and commissioning. Plasma heating campaigns scheduled to begin end-2026, running for six months.
Updated Q4 2026Checked 11 Oct0 updates this week
Superconducting coils create a powerful toroidal magnetic field that confines the 100+ million Kelvin plasma, preventing it from touching the walls.
Neutral beams and radio-frequency waves inject energy into the plasma to reach the temperatures where fusion reactions occur.
Lasers, spectrometers and X-ray cameras observe plasma properties in real time, guiding adjustments to plasma control.
| Spec | JT-60SA |
|---|---|
| Major radius | 2.96 mR (reported) |
| Magnetic field strength | 2.25 TR (reported) |
| Plasma volume | ~140 m³R (reported) |
R reported by the company
National Institutes for Quantum Science and Technology (QST)
JT-60SA tokamak, fusion research, Japan
QST, a government research institute established in 2016, leads Japan's fusion energy program. It hosts and operates JT-60SA, the world's largest operational tokamak, a joint project with the European Union aimed at advancing fusion technology toward ITER and beyond.