NBI Beam Ion Distributions in the Presence of Magnetic Islands in Helical Plasmas

被引：3
|
作者：
Yamaguchi, Hiroyuki [1 ]
Murakami, Sadayoshi [1 ]
机构：
[1] Kyoto Univ, Dept Nucl Engn, Kyoto 6158530, Japan
来源：
PLASMA AND FUSION RESEARCH | 2016年 / 11卷 / 01期
关键词：
Large Helical Device; magnetic island; energetic particle; simulation; Monte Carlo; GNET;
D O I：
10.1585/pfr.11.2403094
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：
Neutral beam injection (NBI) heating simulations of Large Helical Device (LHD) plasma in the presence of magnetic islands are performed using a drift kinetic equation solver, GNET. A magnetic perturbation that causes a magnetic island with poloidal and toroidal mode numbers (m, n) = (1, 1) is considered. It is found that the spatial distribution of beam ions for counter-tangential NBI is significantly modified near the magnetic island, exhibiting a strong dependency on the mode phase of the island. The changes in the velocity space distribution and orbits of the transition particles imply an enhancement in the ripple transport of beam ions near the magnetic island. (C) 2016 The Japan Society of Plasma Science and Nuclear Fusion Research
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页数：5
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