Ideal MHD stability of double transport barrier plasmas in DIII-D

G. Q. Li, S. J. Wang, L. L. Lao, A. D. Turnbull, Ming-Sheng Chu, D. P. Brennan, R. J. Groebner, L. Zhao

研究成果: Article同行評審

8 引文 斯高帕斯(Scopus)

摘要

The ideal MHD stability for double transport barrier (DTB or DB) plasmas with varying edge and internal barrier width and height was investigated, using the ideal MHD stability code GATO. A moderate ratio of edge transport barriers (ETB) height to internal transport barriers (ITBs) height is found to be beneficial to MHD stability and the βN is limited by global low n instabilities. For moderate ITB width DB plasmas, if the ETB is weak, the stability is limited by n = 1 (n is the toroidal mode number) global mode; whereas if the ETB is strong it is limited by intermediate-n edge peeling-ballooning modes. Broadening the ITB can improve stability if the ITB half width wi ≲ 0.3. For very broad ITB width plasmas the stability is limited by stability to a low n (n > 1) global mode.

原文English
文章編號015001
期刊Nuclear Fusion
48
發行號1
DOIs
出版狀態Published - 2008 一月 1

All Science Journal Classification (ASJC) codes

  • 核能與高能物理
  • 凝聚態物理學

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