Simulation of the loss of passing fast ions induced by magnetic islands in EAST tokamak plasmas

doi:10.1063/5.0032049

	Simulation of the loss of passing fast ions induced by magnetic islands in EAST tokamak plasmas
	Yu, Limin 1; Xue, Erbing 1; Zhang, Debing 1; Zheng, Shuyu 1; Zhang, Xianmei 1; Huang, Juan 2; Li, Erzhong 2; Sheng, Zheng-Mao 3,4; Fu, Jing 2
刊名	AIP ADVANCES
	2021-02-01
卷号	11
DOI	10.1063/5.0032049
通讯作者	Zhang, Xianmei(zhangxm@ecust.edu.cn)
英文摘要	The loss of beam ions due to magnetic islands is investigated in a tokamak. The perturbed guiding-center drifts of passing particles including the effect of the finite orbit width are demonstrated. The widths of the drift islands under resonant conditions are studied theoretically and numerically. The ORBIT code is used to simulate the action of the neoclassical tearing mode with a toroidal mode number n = 1 and poloidal mode number m = 2 on passing fast ions generated by neutral beam injection in the Experimental Advanced Superconducting Tokamak. Two loss channels for passing fast ions are identified as the resonant interaction and the stochastic interaction. The lost fast ions in the loss detector zone (LDZ) to simulate the fast-ion loss detector assemble around two regions in phase space, namely, (i) a pitch angle of. = 28. both with and without the mode and (ii). = 59. when the mode amplitude is large enough, where. = arccos(v./v). The number of these lost ions in the LDZ evolves in the period of the mode. The fraction of the total lost ions evolves in the period of the n = 1 oscillation in the toroidal direction. The fraction of lost beam ions has a linear relationship with the mode amplitude in first 10 mu s and a quadratic one thereafter. The corresponding characteristics of the lost beam ions in phase space are also discussed.
资助项目	National Magnetic Confinement Fusion Science Program of China[2015GB110005] ; National Natural Science Foundation of China[11675053] ; National Natural Science Foundation of China[11875131] ; National Natural Science Foundation of China[11975276] ; National Natural Science Foundation of China[12005063] ; National Key Research and Development Program of China[2019YFE03020004] ; National Key Research and Development Program of China[2019YFE03050001] ; Anhui Provincial Natural Science Foundation[2008085J04]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:000630388900011
资助机构	National Magnetic Confinement Fusion Science Program of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; Anhui Provincial Natural Science Foundation
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/121101]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhang, Xianmei
作者单位	1.East China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 3.Zhejiang Univ, Inst Fus Theory & Simulat, Hangzhou 310027, Peoples R China 4.Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China
推荐引用方式 GB/T 7714	Yu, Limin,Xue, Erbing,Zhang, Debing,et al. Simulation of the loss of passing fast ions induced by magnetic islands in EAST tokamak plasmas[J]. AIP ADVANCES,2021,11.
APA	Yu, Limin.,Xue, Erbing.,Zhang, Debing.,Zheng, Shuyu.,Zhang, Xianmei.,...&Fu, Jing.(2021).Simulation of the loss of passing fast ions induced by magnetic islands in EAST tokamak plasmas.AIP ADVANCES,11.
MLA	Yu, Limin,et al."Simulation of the loss of passing fast ions induced by magnetic islands in EAST tokamak plasmas".AIP ADVANCES 11(2021).