Discharge Analysis of EAST H-Mode for Designing Compressed Plasma

Some electric parameters of Experimental Advanced Superconducting Tokamak shot #41195 are analyzed out for compressed plasma at its flat-top phase-the phase has 32-s stationary H-mode plasma discharge and the pulse is long enough for accommodating the compression process. A good knowledge of the total plasma inductance is benefit to map the discharging evolution of vertical magnetic field judged by Maxwell equations, whose nonlinear component is to analyze the effect of noninductive current drive, including the effect of bootstrap current. Furthermore, the relationship of vertical magnetic field and line-averaged density is derived and validated during flat-top phase for given plasma current. An increase in magnetic strength of vertical field will allow high temperature, high density, high beta, and high bootstrap current fraction to be achieved, offering an attractive regime for compressed plasma to approach the Lawson parameter.