Magnetic field topology modeling under resonant magnetic perturbations on EAST

被引：2
作者：
Huang, Jie [1 ,2 ]
Suzuki, Yasuhiro [3 ,4 ]
Liang, Yunfeng [1 ,5 ]
Jia, Manni [1 ,2 ]
Sun, Youwen [1 ]
Chu, Nan [1 ,2 ]
Xu, Jichan [1 ]
Wu, Muquan [1 ]
机构：
[1] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China
[2] Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
[3] Natl Inst Nat Sci, Natl Inst Fus Sci, Oroshi Cho 322-6, Toki, Gifu 5095292, Japan
[4] Grad Univ Adv Studies, SOKENDAI, Oroshi Cho 322-6, Toki, Gifu 5095292, Japan
[5] Forschungszentrum Juelich, Assoc EURATOM FZJ, Inst Energy & Climate Res Plasma Phys, Trilateral Euregio Cluster, D-52425 Julich, Germany
来源：
PLASMA SCIENCE & TECHNOLOGY | 2019年 / 21卷 / 06期
基金：
日本学术振兴会; 国家重点研发计划; 中国国家自然科学基金;
关键词：
magnetic topology; ideal plasma response; tokamaks; resonant magnetic perturbation; TRANSPORT; STABILITY;
D O I：
10.1088/2058-6272/ab0d35
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：
In order to understand the mechanism by which the resonant magnetic perturbation (RMP) mitigates or suppresses the edge-localized mode (ELM), the topological study of the edge magnetic field in ELM mitigation or suppression phase is a critical issue. To model the three-dimensional magnetic field topology superposed RMP on Experimental Advanced Superconducting Tokamak, a numerical model using the field line tracing method for both vacuum and ideal plasma response approximations is proposed. Using the numerical model, the topological change and the penetration depth of the stochastic field lines in the edge magnetic field are studied in an RMP experiment. Comparing profiles of minimum rho on edge stochastic field lines and the particle flux pattern, the ideal plasma response changes the field line penetration depth while remaining similar profile relative to vacuum approximation. To mitigate and suppress ELM strongly, the deep penetration of RMP fields and topological changes of the edge magnetic field is a key from our modeling.
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