Stabilization of Resistive Wall Modes in ITER by Active Feedback and Toroidal Rotation
Journal article, 2004

Two approaches are examined for stabilization of the resistive wall mode (RWM) of toroidal mode number n = 1 in an advanced ITER scenario. Active feedback control, with the present coil design and poloidal sensors placed just inside the inner wall, can be very efficient in stabilizing the RWM. Within the voltage limit of the present design for the feedback coils and conservative constraints on performance, the plasma pressure can be increased up to at least 70% between the no-wall and ideal-wall beta limits. Stabilization of the RWM by toroidal plasma rotation depends on the rotation profile as well as on the model for ion Landau damping. Feedback control of rotating plasmas for the advanced scenario is considered. The effect of the blanket is also studied using a simplified model.

ITER

Rotation

Feedback Stabilization

Resistive Wall Mode

Author

Yueqiang Liu

Chalmers, Department of Electromagnetics, Computational Electromagnetics

Anders Bondeson

Chalmers, Department of Electromagnetics, Computational Electromagnetics

Y. Gribov

A. Polevoi

Nuclear Fusion

0029-5515 (ISSN)

Vol. 44 232-

Subject Categories

Physical Sciences

More information

Created

10/6/2017