ICRH beatwave excited toroidicity induced Alfven eigenmodes in ASDEX Upgrade

被引：6

作者：

Sassenberg, K. ^{[1
,2
]}

Maraschek, M. ^{[1
]}

McCarthy, P. J. ^{[1
,2
]}

Bobkov, W. ^{[1
]}

Garcia-Munoz, M. ^{[1
]}

Hicks, N. ^{[1
]}

Igochine, V. ^{[1
]}

Lauber, P. ^{[1
]}

Guenter, S. ^{[1
]}

机构：

[1] EURATOM, Max Planck Inst Plasmaphys, Garching, Germany

[2] Univ Coll Cork, Assoc EURATOM DCU, Dept Phys, Cork, Ireland

来源：

NUCLEAR FUSION | 2010年 / 50卷 / 05期

关键词：

TOROIDAL PLASMAS; MHD; EXCITATION; TOKAMAK;

D O I：

10.1088/0029-5515/50/5/052003

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：

Experimental evidence is presented demonstrating that an ion cyclotron resonance heating (ICRH) beatwave can drive toroidicity induced Alfven eigenmodes (TAEs) to a finite amplitude and also increase the amplitude of TAEs already excited by fast ions. The radial structure of a beatwave driven TAE reconstructed from soft x-ray measurements is shown to agree with simulations from the gyro-kinetic code LIGKA. Thus beatwaves provide the means to excite TAEs which can be used to diagnose the plasma's safety factor profile through MHD-spectroscopic techniques without significantly perturbing the plasma or to influence the stability of existing TAEs allowing their effect on the fast ion population to be studied.

引用

页数：5

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