ELM-free stationary H-mode plasmas in the ASDEX upgrade tokamak

被引：91
|
作者：
Suttrop, W [1 ]
Maraschek, M
Conway, GD
Fahrbach, HU
Haas, G
Horton, LD
Kurki-Suonio, T
Lasnier, CJ
Leonard, AW
Maggi, CF
Meister, H
Mück, A
Neu, R
Nunes, I
Pütterich, T
Reich, M
Sips, ACC
机构：
[1] EURATOM, Max Planck Inst Plasmaphys, D-85740 Garching, Germany
[2] Helsinki Univ Technol, Euratom TEKES Assoc, FIN-02015 Helsinki, Finland
[3] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA
[4] Gen Atom Co, San Diego, CA 92186 USA
[5] Inst Super Tecn, Assoc EURATOM IST, Ctr Fusao Nucl, P-1049001 Lisbon, Portugal
来源：
PLASMA PHYSICS AND CONTROLLED FUSION | 2003年 / 45卷 / 08期
关键词：
D O I：
10.1088/0741-3335/45/8/302
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：
ELM-free H-mode plasmas with stationary plasma density and radiation level are obtained in the ASDEX Upgrade tokamak with large clearance between the last closed flux surface and the wall, and neutral beam injection in a toroidal direction opposite to that of the plasma current. This behaviour is accompanied by a characteristic narrow-band magnetohydrodynamic (MHD) oscillation with clear harmonics up to n = 11 visible. This mode is localized in the plasma edge region. Conditions and properties of the stationary ELM-free phases and the edge MHD oscillation closely resemble that of the 'quiescent H-mode' and the 'edge harmonic oscillation' found in the DIII-D tokamak (Burrell K H et al 2002 Plasma Phys. Control. Fusion 44 A253). In addition, high-frequency MHD oscillations are found with an amplitude correlated with fluctuations of the divertor D-alpha intensity, suggesting a possible relevance of these modes for particle transport.
引用
收藏
页码：1399 / 1416
页数：18
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