Numerical study on the influence of electron cyclotron current drive on tearing mode

被引：7

作者：

Chen, Long ^{[1
]}

Liu, Jinyuan ^{[1
]}

Duan, Ping ^{[2
]}

Mao, Aohua ^{[1
]}

Sun, Jizhong ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Phys & Optoelect Technol, Dalian 116024, Peoples R China

[2] Dalian Maritime Univ, Dept Phys, Dalian 116026, Peoples R China

来源：

PHYSICS OF PLASMAS | 2014年 / 21卷 / 10期

基金：

中国国家自然科学基金;

关键词：

STABILIZATION; ECCD;

D O I：

10.1063/1.4897396

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：

Controlling tearing modes by localized current drive is explored by using numerical simulation with a set of compressible magnetohydrodynamics equations. By examining the effects of different characteristics of driven current, such as density distribution, duration time, and deposition location, it is found that a driven current with larger magnitude and more focused deposition region shows a better suppression effect on the tearing modes. Meanwhile destabilizing effects are also observed when a driven current over a certain magnitude is applied continuously. In comparison with those on the X-point of the magnetic island, the results are better when the current deposition is targeted on the O-point. In addition, the timing control of the current deposition will be also addressed. (C) 2014 AIP Publishing LLC.

引用

页数：8

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