Comparison of m=2, n=1 neo-classical tearing mode limits in JET and DIII-D

被引：36
|
作者：
Hender, TC [1 ]
Howell, DF
Buttery, RJ
Sauter, O
Sartori, F
La Haye, RJ
Hyatt, AW
Petty, CC
机构：
[1] UKAEA, Fus Assoc, EURATOM, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England
[2] Ecole Polytech Fed Lausanne, Ctr Rech Phys Plasmas, Assoc Euratom Confederat Suisse, CH-1015 Lausanne, Switzerland
[3] Gen Atom Co, San Diego, CA 92186 USA
来源：
NUCLEAR FUSION | 2004年 / 44卷 / 07期
关键词：
D O I：
10.1088/0029-5515/44/7/010
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：
Joint experiments have been conducted on JET and DIII-D to study m = 2, n = I neo-classical tearing modes (NTMs). Very similar instability behaviour is observed on both machines and the scaling of the mode island width with beta and the observation of n = I islands at q = 2, strongly points to these modes being driven by neo-classical effects. Identity experiments using closely matched non-dimensional parameters (plasma shape, aspect ratio, q, p* and collisionality) on JET and DIII-D show similar global beta-limits for the NTM. Further scalings, which combine broader data sets from JET and DIII-D, show an approximately linear scaling, or slightly stronger, with ion gyro-radius and a relatively weak dependence on collisionality.
引用
收藏
页码：788 / 794
页数：7
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