We investigate drift kinetic effects on the resistive wall mode (RWM) stability in ITER plasmas, due to the mode resonance with magnetic precession drifts and/or bounce motion of bulk plasma thermal particles. A toroidal drift kinetic model is self-consistently incorporated into the MHD formulation. Self-consistent simulations using the hybrid kinetic-MHD code MARS-K (Y.Q. Liu et al 2008 Phys. Plasmas 15 112503) predict a parameter space for ITER steady-state plasmas, where the RWM is fully stabilized by the drift kinetic effects combined with the toroidal plasma flow. A wider stable parameter space is predicted by the perturbative approach based on the ideal kink mode or the fluid RWM eigenfunction. The difference is attributed primarily to the self-consistent determination of the mode eigenvalue in the non-perturbative approach.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Condensed Matter Physics