Stability analysis of high-beta plasmas in the Joint European Torus

被引：4
|
作者：
Kwon, O. J. [1 ]
Chapman, I. T. [2 ]
Buratti, P. [3 ]
Han, H. [4 ]
Na, Y. [5 ]
机构：
[1] Daegu Univ, Dept Phys, Gyeongbuk 712714, South Korea
[2] EURATOM CCFE Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England
[3] Assoc EURATOM ENEA Fus, CR Frascati, Rome, Italy
[4] Natl Fus Res Inst, Taejon 305806, South Korea
[5] Seoul Natl Univ, Dept Nucl Engn, Seoul 151742, South Korea
[6] Culham Sci Ctr, JET EFDA, Abingdon OX14 3DB, Oxon, England
来源：
PLASMA PHYSICS AND CONTROLLED FUSION | 2012年 / 54卷 / 04期
基金：
新加坡国家研究基金会;
关键词：
ADVANCED TOKAMAK; SCENARIO;
D O I：
10.1088/0741-3335/54/4/045010
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：
The linear stability of ideal instabilities with low toroidal mode numbers has been assessed for various high-beta plasmas in JET including steady-state and hybrid scenarios. Results of detailed stability analysis of discharges with the minimum in safety factor near 1, 3/2 and 2 are presented. In all cases, the plasmas are found to become unstable to global ideal kink-ballooning modes as the minimum safety factor decreases with the current diffusion. The plasmas are found to exhibit continuous modes experimentally which degrade performance, with the mode onset being extremely well correlated with the crossing of the numerically predicted stability boundaries. The most favorable profiles for global stability have also been assessed.
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收藏
页数：8
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