Stability of current-driven modes in reversed field pinches with resistive walls and plasma rotation

Z.X. Jiang, A. Bondeson, R. Paccagnella

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Abstract

The linear stability of reversed field pinches (RFP's) to current driven modes is investigated including the effects of resistive walls at a finite distance from the plasma and mode rotation. A comprehensive study is made of the stability to ideal and resistive modes and the implications for long-pulse operation of RFP's are discussed. Stability to resistive modes of poloidal mode number m = 1 requires conducting walls at a distance b/a < 1.11 (a is the plasma and b the wall radius) for optimally peaked current profiles. Stability to m=0 requires very close-fitting conductors, b/a < 1.03. The requirements on wall times and mode rotation frequencies posed by these modes are discussed. Nonresonant m = 1 modes cannot be stabilized by resistive walls and require active feedback. © 1995 American Institute of Physics.
Original languageEnglish
Pages (from-to)442 - 449
Number of pages8
JournalPhysics of Plasmas
Volume2
Issue number2
DOIs
Publication statusPublished - 1995
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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