The modeling of active magnetic feedback and plasma rotation stabilization of the resistive wall mode (RWM) in tokamaks was analyzed. A complete solution for the feedback issue was obtained by assuming the plasma obeys ideal magnetohydrodynamics (MHD) and utilizing a normal mode approach (NMA), for plasma with low rotation. It was shown that poloidal sensors are more effective than radial sensors and coils inside of the vacuum vessel more effective than outside. It was found that the effect of rotation stabilization of the plasma depends on the plasma dissipation model. The results show that rotation reduces the feedback gain required for RWM stabilization.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics