Modelling of plasma response to RMP fields in MAST and ITER
Journal article, 2011

The resonant magnetic perturbation (RMP) fields, including the plasma response, are computed within a linear, full toroidal, single-fluid resistive magnetohydrodynamic (MHD) model, and under realistic plasma conditions for MAST and ITER. The response field is found to be considerably reduced, compared with the vacuum field produced by the magnetic perturbation coils. This field reduction relies strongly on the screening effect from the toroidal plasma rotation. Computations also quantify three-dimensional (3D) distortions of the plasma surface, caused by RMP fields. A correlation is found between the computed mode structures, the plasma surface displacement and the observed density pump-out effect in MAST experiments. Generally, the density pump-out tends to occur when the surface displacement peaks near the X-points.

Author

Yueqiang Liu

Chalmers, Earth and Space Sciences, Transport Theory

Y. Gribov

M.P. Gryaznevich

T.C. Hender

A. Kir

E. Nardon

Nuclear Fusion

0029-5515 (ISSN)

Vol. 51 083002-

Areas of Advance

Energy

Roots

Basic sciences

Subject Categories

Fusion, Plasma and Space Physics

More information

Created

10/7/2017