Effects of the magnetic equilibrium on gyrokinetic simulations of tokamak microinstabilities

被引：5

作者：

Wan, Weigang ^{[1
]}

Chen, Yang ^{[1
]}

Parker, Scott E. ^{[1
]}

Groebner, Richard J. ^{[2
]}

机构：

[1] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

[2] Gen Atom Co, San Diego, CA 92186 USA

来源：

PHYSICS OF PLASMAS | 2015年 / 22卷 / 06期

关键词：

EDGE STABILITY; PLASMA SHAPE; PROFILES;

D O I：

10.1063/1.4922079

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：

The general geometry of the experimental tokamak magnetic equilibrium is implemented in the global gyrokinetic simulation code GEM. Compared to the general geometry, the well used Miller parameterization of the magnetic equilibrium is a good approximation in the core region and up to the top of the pedestal. Linear simulations indicate that results with the two geometries agree for r/a <= 0.9. However, in the edge region, the instabilities are sensitive to the magnetic equilibrium in both the L-mode and the H-mode plasmas. A small variation of the plasma shaping parameters leads to large changes to the edge instability. (C) 2015 AIP Publishing LLC.

引用

页数：7

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