Overview of first plasma operation results of the JT-60SA superconducting magnet

The first plasma of the JT-60SA was obtained, and the plasma current reached 1.2 MA in 2023. During the commissioning of the superconducting magnets, a nominal current of 25.7 kA was achieved for the toroidal field coils, and the operating current reached half of the nominal current of 20 kA for the central solenoid and equilibrium field coils during individual energization tests. All coils were successfully energized simultaneously, and operated stably under repeated plasma operations at 15-20-minute intervals. Improvements to mitigate the large noise in the quench detection system are ongoing for the next plasma operation.