Investigation of JT-60SA operation scenario through development of equilibrium control simulator

Suzuki, Takahiro; Miyata, Yoshiaki; Ide, Shunsuke; Urano, Hajime; Fujita, Takaaki

We have developed an equilibrium control simulator and investigated the JT-60SA operation scenario using the simulator. The simulator consists of an equilibrium construction component that solves temporal evolution of plasma coupled with conducting wall and a controller that controls the plasma current, position and shape via external coil current in the feedback manner. An operation scenario based on the feedback control has been developed, where the plasma current is raised by flux swing in center solenoids and plasma position and shapes are controlled in order to form divertor configuration and apply heating. Results on controllability of the position and shape during heating and flux swing and controllability of the vertical instability are presented as well.