VALEN modeling of RWM with Rotation

The VALEN RWM active control modeling code has been extended to include the effects of mode rotation. Single mode theory predicts that rotation of an unstable plasma mode near a conducting wall lowers the growth rate of the instability and rotation above a critical value will lead to passive stabilization (ref{\#}1). This expected stabilization threshold has been observed in the VALEN model. VALEN can model the 3-D passive stabilizing structure surrounding the plasma. When the passive structure is not axisymmetric the mode is found to lock at small values of the mode torque parameter. Examples of these results are presented for ITER (with and without blanket modules), DIII-D and HBT-EP. \newline \newline Ref{\#}1 A.H.Boozer, Pop 1999