Control of the Vertical Instability in the SUNIST Spherical Tokamak

摘要

Control of the vertical instability of the plasma in the SUNIST spherical tokamak isstudied.A proportional-derivative(PD)position controller is employed in a control system whichconsists of a massless plasma,active coils and a passive conducting vessel.Stability conditions aredetermined and the feedback control with different combinations of both active and passive coils,available on SUNIST,is emphasized.The simulation results are also discussed.