First Operation of the JT-60SA TF Magnet

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<p>The complete superconducting toroidal field (TF) magnet of the JT-60SA tokamak (R=3 m, a=1.2 m) was first energized in February 2021 and reached its full design field (2.25 T on-axis) on 02 March. Tokamak operation was interrupted due to an arc on the largest poloidal field coil EF1 but restarted in 2023 following extensive improvements. In 2023 the TF magnet was used frequently during August – December, during commissioning of the magnet system, plasma operations and in support of electron cyclotron wall cleaning (ECWC).</p>

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