The influence of non-uniform toroidal plasma rotation on the stability of resistive wall modes is analysed for high-β advanced tokamak equilibria, using toroidal ideal MHD. For advanced tokamak equilibria with qmin in the range of 1.6-2.1, a main role is played by the rotation at the resonance where q⋍2. A rotation frequency of at least 3% of the central Alfvén frequency is required around at the q⋍2 resonance in order to raise the ideal β limit significantly above the no-wall value. Certain types of rotation profiles do not lead to stabilization at any rotation velocity. Comparison with experimental results from DIII-D indicates that ideal MHD thresholds are in reasonable agreement with experiment.
Kinetic analysis of the resistive wall modes in the ITER advanced tokamak scenario