Session RP1 - Poster Session VIII.
POSTER session, Thursday afternoon, October 30
Fran Hill Southeast Exhibit Hall, ACC
Achieving the advanced tokamak plasmas in ITER that are necessary to realize long-pulse/steady-state burning plasma goals depend critically on the control of the resistive wall mode (RWM) at and above the no-wall beta limit. We have carried out a broad study with the VALEN code in both eigenvalue and time-dependent analysis of RWM feeedback control using the base ITER design error field correction coils and find this system quite limited in performance, reaching only 203D analysis of the passive stabilization properties of the double wall ITER vacuum vessel and internal blanket modules, show substantial improvements in RWM ideal wall stabilization limits from the effect of the blanket modules. VALEN modeling shows this improved ideal limit can be achieved with active feedback control using only six internal coils (arranged as three n=1 pairs) with dramatic reductions in the stabilization power requirements.