ELM Suppression by Resonant Magnetic Perturbations at DIII-D

被引：0
|
作者：
Schaffer, M. J. [1 ]
Evans, T. E. [1 ]
Fenstermacher, M. E. [2 ]
Moyer, R. A. [3 ]
机构：
[1] Gen Atom Co, POB 85608, San Diego, CA 92186 USA
[2] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
[3] Univ Calif San Diego, La Jolla, CA 92093 USA
来源：
2009 23RD IEEE/NPSS SYMPOSIUM ON FUSION ENGINEERING | 2009年
关键词：
edge localized mode; ELM; magnetic perturbations; RMP; DIII-D; TOKAMAK; ITER;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Edge localized mode (ELM) suppression by resonant magnetic perturbations (RMPs) is being studied at DIII-D with ITER-similar plasma shapes and edge collisionalities. Suppression at low collisionality correlates with overlap of vacuum magnetic field islands in a quantified edge layer at moderate q. Suppression is successful with n=3 perturbations from one or two rows of internal coils, but it fails for n < 3 and for poloidally-tall and distant coil arrays. These observations are interpreted in terms of differences of spatial helical harmonic spectra the different magnetic perturbations: excessive non-resonant harmonics may brake plasma rotation before the RMP is large enough to suppress ELMs.
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页码：41 / +
页数：2
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