Effects of plasma current density profile on minor disruption in disruption simulations of J-TEXT

Experimental and theoretical researches of disruption mitigation were conducted in J-TEXT to explore the mechanism of disruptions and the method of mitigation. Among this researches, minor/major disruption was studied by numerical simulations. For the sake of comprehending the effects of plasma current density profile on minor disruption profoundly, simulations of supersonic molecular beam injection(SMBI) of impurities(argon) into J-TEXT with different distributions of plasma current density profile are conducted by NIMROD, a 3D magnetohydrodynamic(MHD) code. In this paper, different distributions of current density profile are realized by changing the safety factor to change the current density gradients. The result indicates that the distribution of the current density profile can affect MHD behaviors, which have a significant impact on minor disruption.