Experimental and theoretical study of weakly coherent mode in I-mode edge plasmas in the EAST tokamak

doi:10.1088/1741-4326/ac7537

	Experimental and theoretical study of weakly coherent mode in I-mode edge plasmas in the EAST tokamak
	Liu, Z. X.2; Liu, Y. J.2; Xiao, J. Y.2; Xia, T. Y.1; Li, Y. L.1,2; Xu, X. Q.4; Wu, M. Q.3; Li, G. Q.1; Wu, M. F.1,2; Zhang, T.1
刊名	NUCLEAR FUSION
	2022-08-01
卷号	62
关键词	I-mode DAW WCM EAST
ISSN号	0029-5515
DOI	10.1088/1741-4326/ac7537
通讯作者	Liu, Z. X.(zxliu316@ustc.edu.cn)
英文摘要	The I-mode is a promising operation mode for fusion in the future, featuring high-temperature and low-density confinement, but the reason why the temperature and density are decoupled remains an important aspect to be explored. The experimental results from the experimental advanced superconducting tokamak (EAST) showed that the weakly coherent mode (WCM) is directly related to sustaining the I-mode and that the peak amplitude of the WCM is proportional to the temperature in the pedestal. Simulating the experimental data from EAST with the six-field model of BOUT++, we find a density perturbation close to the frequency of the WCM observed in the experiment. By testing all the physical terms in this model, we find that the density perturbation and particle transport are directly related to the drift Alfven wave (DAW) mode. We also use the SymPIC program (Xiao et al Plasma Sci. Technol. 20 110501; Phys. Plasmas 22 112504; Plasma Sci. Technol. 23 055102) to simulate the same experimental data and find that the frequency range of the WCM is close to both experimental and BOUT++ results. Therefore, the WCM of the I-mode can be considered to be driven by the DAW, which helps improve the transport of the I-mode.
资助项目	National Magnetic Confinement Fusion Program of China[2019YFE03090200] ; National Magnetic Confinement Fusion Program of China[2018YFE0311200] ; National Natural Science Foundation of China[11975230] ; National Natural Science Foundation of China[11975231] ; National Natural Science Foundation of China[12175277] ; Collaborative Innovation Program of Hefei Science Center, CAS[2021HSC-CIP018]
WOS研究方向	Physics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:000813907000001
资助机构	National Magnetic Confinement Fusion Program of China ; National Natural Science Foundation of China ; Collaborative Innovation Program of Hefei Science Center, CAS
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/129594]
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, Peoples R China 2.Univ Sci & Technol China, Sch Nucl Sci & Technol, Hefei 230026, Anhui, Peoples R China 3.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China 4.Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
推荐引用方式 GB/T 7714	Liu, Z. X.,Liu, Y. J.,Xiao, J. Y.,et al. Experimental and theoretical study of weakly coherent mode in I-mode edge plasmas in the EAST tokamak[J]. NUCLEAR FUSION,2022,62.
APA	Liu, Z. X..,Liu, Y. J..,Xiao, J. Y..,Xia, T. Y..,Li, Y. L..,...&Liu, W. D..(2022).Experimental and theoretical study of weakly coherent mode in I-mode edge plasmas in the EAST tokamak.NUCLEAR FUSION,62.
MLA	Liu, Z. X.,et al."Experimental and theoretical study of weakly coherent mode in I-mode edge plasmas in the EAST tokamak".NUCLEAR FUSION 62(2022).