Modelling ResistiveWall Modes in ITER with Self-Consistent Inclusion of Drift Kinetic Resonances

Modelling ResistiveWall Modes in ITER with Self-Consistent Inclusion of Drift Kinetic Resonances

Modelling ResistiveWall Modes in ITER with Self-Consistent Inclusion of Drift Kinetic Resonances 150 150 Mathew

Modelling ResistiveWall Modes in ITER with Self-Consistent Inclusion of Drift Kinetic Resonances

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, and et al. , Phys. Plasmas, in press (2008)] predict a parameter space for ITER steady state plasmas, where the RWM is fully stabilised 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.

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01/01/2009