Destabilizing effects of edge infernal components on resistive wall modes in advanced tokamak scenarios

The stability of the n = 1 resistive wall modes (RWMs) dominated by pressure-driven infernal components is investigated using ideal magnetohydrodynamics (MHD) code AEGIS for advanced tokamak scenarios. Here, toroidal mode number. In scenarios, due to large fraction bootstrap current contribution, profile safety factor q deeply reversed in magnetic shear central core region and locally flattened within edge pedestal. Consequently, develop corresponding flat-q regions both edge. However, dominate RWM structure lead lower βN limits framework MHD, rotation found most critical stabilization dominant influence components, which should be maintained sufficiently magnitude range order alone fully suppress typical