Stabilization of the resistive wall mode in DIII-D by plasma rotation and magnetic feedback

M. Okabayashi, J. Bialek, M. S. Chance, M. S. Chu, E. D. Fredrickson, A. M. Garofalo, R. Hatcher, T. H. Jensen, L. C. Johnson, R. J. La Haye, G. A. Navratil, H. Reimerdes, J. T. Scoville, E. J. Strait, A. D. Turnbull, M. L. Walker

研究成果: Conference article同行評審

53 引文 斯高帕斯(Scopus)

摘要

Suppression of the resistive wall mode (RWM) has been successfully demonstrated in the DIII-D tokamak by using rotational stabilization in conjunction with a close-fitting vacuum vessel wall. The duration of the high-pressure discharge was extended to hundreds of times the wall skin time. Frequently, the plasma pressure reached the ideal-wall magnetohydrodynamic (MHD) kink limit. The confined pressure is up to twice as high as the no-wall ideal MHD kink limit. Near its marginal stability point, the RWM is found to resonate with residual non-axisymmetric fields (e.g. components of the error field). A magnetic feedback system has been used to identify and compensate for the residual non-axisymmetric fields. This is to the best of our knowledge, the first demonstration of the sustainment of a stable plasma with pressure at levels well above the no-wall pressure limit. This technique is expected to be applicable to other toroidal devices.

原文English
頁(從 - 到)B339-B355
期刊Plasma Physics and Controlled Fusion
44
發行號12 B SPEC
DOIs
出版狀態Published - 2002 十二月
事件29th European Physical Society Conference on Plasma Physics and Controlled Fusion - Montreux, Switzerland
持續時間: 2002 六月 172002 六月 21

All Science Journal Classification (ASJC) codes

  • 核能與工程
  • 凝聚態物理學

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