Numerical investigation of the 2/1 double tearing mode in EAST with the CLT code

doi:10.1063/5.0159182

	Numerical investigation of the 2/1 double tearing mode in EAST with the CLT code
	Li, J. Y.3; Liu, Z. X.3; Zhang, W.2; Ma, Z. W.2; Gao, X.1; Li, G. Q.1; Liu, H. Q.1; Wu, M. F.3; Liu, Y. J.3; Deng, C. C.3
刊名	AIP ADVANCES
	2023-10-01
卷号	13
DOI	10.1063/5.0159182
通讯作者	Liu, Z. X.(zxliu316@ustc.edu.cn)
英文摘要	The pressure crashes observed in shot No. 71326 in the Experimental Advanced Superconducting Tokamak are numerically investigated with the three-dimensional, toroidal, and full resistive-magnetohydrodynamics code (CLT). Based on the experimental observations, the pressure crash is caused by the nonlinear evolution of the m/n = 2/1 double tearing mode (DTM), where n and m are the toroidal and poloidal mode numbers, respectively. However, we find that the m/n = 2/1 DTM is stable based on the safety factor (q) profile from the equilibrium code EFIT, which indicates that the original q profile is somewhat inconsistent with the actual profile due to q measurement uncertainty. Since there is no motional Stark effect diagnostic for this shot, the local information of the magnetic field is missing, which leads to the largest contribution to the discrepancy. If other information is perfectly known and the q profile is the only uncertainty, then we could provide some information for the EFIT reconstruction by comparing our simulation results with electron cyclotron emission signals to constrain the uncertainty of the q profile to a much smaller region. The influence of plasma rotation and the two-fluids effect is also discussed.
资助项目	This work was supported by the National Magnetic Confinement Fusion Program of China under Contract Nos. 2019YFE03090200, 2019YFE03090500, 2019YFE03030004, and 2018YFE0311200; the National Natural Science Foundation of China under Contract Nos. 11975230, 1[2019YFE03090200] ; This work was supported by the National Magnetic Confinement Fusion Program of China under Contract Nos. 2019YFE03090200, 2019YFE03090500, 2019YFE03030004, and 2018YFE0311200; the National Natural Science Foundation of China under Contract Nos. 11975230, 1[2019YFE03090500] ; This work was supported by the National Magnetic Confinement Fusion Program of China under Contract Nos. 2019YFE03090200, 2019YFE03090500, 2019YFE03030004, and 2018YFE0311200; the National Natural Science Foundation of China under Contract Nos. 11975230, 1[2019YFE03030004] ; This work was supported by the National Magnetic Confinement Fusion Program of China under Contract Nos. 2019YFE03090200, 2019YFE03090500, 2019YFE03030004, and 2018YFE0311200; the National Natural Science Foundation of China under Contract Nos. 11975230, 1[2018YFE0311200] ; National Magnetic Confinement Fusion Program of China[11975230] ; National Magnetic Confinement Fusion Program of China[11975231] ; National Magnetic Confinement Fusion Program of China[12005185] ; National Magnetic Confinement Fusion Program of China[11835010] ; National Magnetic Confinement Fusion Program of China[12175277] ; National Natural Science Foundation of China[2021HSC-CIP018] ; Collaborative Innovation Program of the Hefei Science Center, CAS
WOS关键词	INTERNAL TRANSPORT BARRIERS ; SHEAR PLASMAS ; TOKAMAK ; RECONSTRUCTION ; DISCHARGES ; OPERATION ; PROFILES ; ITB
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	AIP Publishing
WOS记录号	WOS:001083992100001
资助机构	This work was supported by the National Magnetic Confinement Fusion Program of China under Contract Nos. 2019YFE03090200, 2019YFE03090500, 2019YFE03030004, and 2018YFE0311200; the National Natural Science Foundation of China under Contract Nos. 11975230, 1 ; National Magnetic Confinement Fusion Program of China ; National Natural Science Foundation of China ; Collaborative Innovation Program of the Hefei Science Center, CAS
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/133348]
专题	中国科学院合肥物质科学研究院
通讯作者	Liu, Z. X.
作者单位	1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China 2.Zhejiang Univ, Inst Fus Theory & Simulat, Dept Phys, Hangzhou 310027, Peoples R China 3.Univ Sci & Technol China, Dept Plasma Phys & Fus Engn, Hefei 230026, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Li, J. Y.,Liu, Z. X.,Zhang, W.,et al. Numerical investigation of the 2/1 double tearing mode in EAST with the CLT code[J]. AIP ADVANCES,2023,13.
APA	Li, J. Y..,Liu, Z. X..,Zhang, W..,Ma, Z. W..,Gao, X..,...&EAST Team.(2023).Numerical investigation of the 2/1 double tearing mode in EAST with the CLT code.AIP ADVANCES,13.
MLA	Li, J. Y.,et al."Numerical investigation of the 2/1 double tearing mode in EAST with the CLT code".AIP ADVANCES 13(2023).