Saturated ideal kink/peeling formations described as three-dimensional magnetohydrodynamic tokamak equilibrium states

被引：11

作者：

Cooper, W. A. ^{[1
]}

Brunetti, D. ^{[1
]}

Duval, B. P. ^{[1
]}

Faustin, J. M. ^{[1
]}

Graves, J. P. ^{[1
]}

Kleiner, A. ^{[1
]}

Patten, H. ^{[1
]}

Pfefferle, D. ^{[1
]}

Porte, L. ^{[1
]}

Raghunathan, M. ^{[1
]}

Reimerdes, H. ^{[1
]}

Sauter, O. ^{[1
]}

Tran, T. M. ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, SPC, CH-1015 Lausanne, Switzerland

来源：

PHYSICS OF PLASMAS | 2016年 / 23卷 / 04期

基金：

瑞士国家科学基金会;

关键词：

STABILITY PROPERTIES; MHD STABILITY; REGIME; DENSITY; MODES; SHEAR; BETA;

D O I：

10.1063/1.4945743

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Free boundary magnetohydrodynamic equilibrium states with spontaneous three dimensional deformations of the plasma-vacuum interface are computed for the first time. The structures obtained have the appearance of saturated ideal external kink/peeling modes. High edge pressure gradients yield toroidal mode number n = 1 corrugations for a high edge bootstrap current and larger n distortions when this current is small. Deformations in the plasma boundary region induce a nonaxisymmetric Pfirsch-Schluter current driving a field-aligned current ribbon consistent with reported experimental observations. A variation in the 3D equilibrium confirms that the n = 1 mode is a kink/peeling structure. We surmise that our calculated equilibrium structures constitute a viable model for the edge harmonic oscillations and outer modes associated with a quiescent H-mode operation in shaped tokamak plasmas.

引用

页数：5

共 34 条

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