Study of turbulence in the high beta(P) discharge using only RF heating on EAST

doi:10.1088/1361-6587/ac4b07

HFCAS OpenIR

	Study of turbulence in the high beta(P) discharge using only RF heating on EAST
	Zheng, S. Y.1; Zhang, D. B.1; Xue, E. B.1; Yu, L. M.1; Zhang, X. M.1; Huang, J.2 ; Xiao, Y.3; Wu, M. Q.4; Gong, X. Z.2
	2022-04-01
发表期刊	PLASMA PHYSICS AND CONTROLLED FUSION
ISSN	0741-3335
通讯作者	Zhang, D. B.(zdbing@ecust.edu.cn) ; Zhang, X. M.(zhangxm@ecust.edu.cn)
摘要	High poloidal beta scenarios with a favorable energy confinement (beta(p) similar to 1.9, H98(y2) similar to 1.4) have been achieved on the Experimental Advanced Superconducting Tokamak using only radio frequency wave heating. Gyrokinetic simulations are carried out with experimental plasma parameters and tokamak equilibrium data of a typical high beta(p) discharge using the gyrokinetic toroidal code. Linear simulations show that electron-temperature scale length and electron-density scale length destabilize the turbulence, collision effects stabilize the turbulence, and the instability propagates in the electron diamagnetic direction. These properties indicate that the dominant instability in the core of high beta(p) plasma is a collisionless trapped electron mode. Ion thermal diffusivity, calculated by nonlinear gyrokinetic simulations, is consistent with the experimental value, in which the electron collision effects play an important role. Further analyses show that instabilities with k(theta)rho(s) > 0.38 are suppressed by collision effects and collision effects reduce the radial correlation length of turbulence, resulting in the suppression of the turbulence.
关键词	high poloidal beta gyrokinetic simulation turbulence transport
DOI	10.1088/1361-6587/ac4b07
关键词[WOS]	PROFILE
收录类别	SCI
语种	英语
资助项目	National MCF Energy R&D Program of China[2019YFE03060000] ; National MCF Energy R&D Program of China[2019YFE03050000] ; National MCF Energy R&D Program of China[2019YFE03020004] ; National Natural Science Foundation of China[11675053] ; National Natural Science Foundation of China[12005063] ; National Natural Science Foundation of China[11875131] ; Users with Excellence Program of Hefei Science Center CAS[2020HSC-UE011] ; Users with Excellence Program of Hefei Science Center CAS[2021HSC-UE015] ; Anhui Provincial Natural Science Foundation[2008085Jo4]
项目资助者	National MCF Energy R&D Program of China ; National Natural Science Foundation of China ; Users with Excellence Program of Hefei Science Center CAS ; Anhui Provincial Natural Science Foundation
WOS研究方向	Physics
WOS类目	Physics, Fluids & Plasmas
WOS记录号	WOS:000762036500001
出版者	IOP Publishing Ltd
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/127800
专题	中国科学院合肥物质科学研究院
通讯作者	Zhang, D. B.; Zhang, X. M.
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.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China
推荐引用方式 GB/T 7714	Zheng, S. Y.,Zhang, D. B.,Xue, E. B.,et al. Study of turbulence in the high beta(P) discharge using only RF heating on EAST[J]. PLASMA PHYSICS AND CONTROLLED FUSION,2022,64.
APA	Zheng, S. Y..,Zhang, D. B..,Xue, E. B..,Yu, L. M..,Zhang, X. M..,...&Gong, X. Z..(2022).Study of turbulence in the high beta(P) discharge using only RF heating on EAST.PLASMA PHYSICS AND CONTROLLED FUSION,64.
MLA	Zheng, S. Y.,et al."Study of turbulence in the high beta(P) discharge using only RF heating on EAST".PLASMA PHYSICS AND CONTROLLED FUSION 64(2022).