Effects of current profile on the ideal ballooning mode

Publisher Website
Google Scholar
Abstract
The effects of current profile on the ideal ballooning mode for circular and shaped poloidal cross‐section plasmas in tokamaks are studied analytically and numerically. The results show that for moderately shaped plasmas the critical normalized beta, βNC, against the ballooning mode increases approximately linearly with the plasma internal inductance li. As the plasma becomes more strongly shaped, this dependence on li becomes weaker, and for a divertor plasma βNC shows a very weak dependence on li for the range of moderate li values considered.