Response of a resistive and rotating tokamak to external magnetic perturbations below the Alfven frequency

被引：11

作者：

Chu, M. S. ^{[1
]}

Lao, L. L. ^{[1
]}

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

Evans, T. E. ^{[1
]}

Strait, E. J. ^{[1
]}

Liu, Y. Q. ^{[2
]}

Lanctot, M. J. ^{[3
]}

Reimerdes, H. ^{[3
]}

Liu, Y. ^{[4
]}

Casper, T. A. ^{[5
]}

Gribov, Yuri ^{[5
]}

机构：

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

[2] Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[3] Columbia Univ, New York, NY 10027 USA

[4] Dalian Univ Technol, Dalian, Peoples R China

[5] ITER Org, F-13108 St Paul Les Durance, France

来源：

NUCLEAR FUSION | 2011年 / 51卷 / 07期

关键词：

PLASMAS; MODE;

D O I：

10.1088/0029-5515/51/7/073036

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：

Motivated by the recent experimental observation that plasma stability can be improved by external magnetic perturbations, the general problem of plasma response to external magnetic perturbations is investigated. Different (vacuum, ideal and resistive) plasma response models are considered and compared. Plasma response, in experiments where stabilization was achieved, is obtained through computation using the MARS-F code, with a plasma model that includes both plasma resistivity and rotation. The resultant magnetic field line stochasticity is much reduced from that obtained formerly using the vacuum plasma model. This reduced stochasticity is more consistent with the favourable experimental observation of enhanced stability. Examples are given for the response of an ITER plasma to perturbations generated by the correction coils; and the response of a plasma to external coils (antenna) up to the Alfven frequency.

引用

页数：10

共 10 条

[1] Stabilization of the external kink and the resistive wall mode [J].