Achievement of the first tokamak plasma with low inductive electric field in JT-60SA
T. Wakatsuki, H. Urano, M. Yoshida, N. Tsujii, Shizuo Inoue, S. Kojima, Toshihide Nakano, Manabu Fukumoto, Y. Ohtani, R. Sano, S. Ide
Abstract
Abstract The world’s largest superconducting tokamak, JT-60SA, has successfully achieved its first plasma operation under the constraint of a low toroidal inductive electric field of 0.15 V m −1 . A plasma start-up scenario, leveraging the effective confinement of electrons accelerated by the electron cyclotron wave, proved to be instrumental in reaching this milestone under the challenging conditions. The demonstration of plasma start-up using second harmonic electron cyclotron heating, with an applied toroidal electric field of 0.15 V m −1 , strongly validates the feasibility of achieving first plasma operation in ITER.