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Title: A simple toroidal shell model for the study of feedback stabilization of resistive wall modes in a tokamak plasma

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.2834282· OSTI ID:21103815
 [1]
  1. ITER-Korea Domestic Agency, National Fusion Research Institute, 52, Yeoeun-dong, Yusung-Gu, Daejon (Korea, Republic of)

A study is conducted on the feedback stabilization of resistive wall modes (RWMs) in a tokamak plasma using a toroidal shell model. An analytically tractable form of the RWM dispersion relation is derived in the presence of a set of discrete feedback coil currents. A parametric study is carried out to optimize the feedback system configuration. It is shown that the total toroidal angle of a resistive wall spanned by the feedback coils and the poloidal angular extent of a feedback coil are crucial parameters to determine the efficacy of the feedback system.

OSTI ID:
21103815
Journal Information:
Physics of Plasmas, Vol. 15, Issue 2; Other Information: DOI: 10.1063/1.2834282; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
Country of Publication:
United States
Language:
English