Reduction of impurity confinement time by combined heating of LHW and ECRH in EAST*

doi:10.1088/1674-1056/abe1a6

	Reduction of impurity confinement time by combined heating of LHW and ECRH in EAST*
	Xu, Zong 3,4; Wu, Zhen-Wei 1; Zhang, Ling 1; Huang, Yue-Heng 3,4; Gao, Wei 1; Cheng, Yun-Xin 1,2; Lin, Xiao-Dong 3,4; Gao, Xiang 1,3,4; Chen, Ying-Jie 1; Li, Lei 1,2
刊名	CHINESE PHYSICS B
	2021-07-01
卷号	30
关键词	LHW and ECRH heating impurity confinement time tungsten small ELMs regime EAST
ISSN号	1674-1056
DOI	10.1088/1674-1056/abe1a6
通讯作者	Wu, Zhen-Wei(zwwu@ipp.ac.cn) ; Zhang, Ling(zhangling@ipp.ac.cn)
英文摘要	The core impurity confinement properties are experimentally investigated in the Experimental Advanced Superconducting Tokamak (EAST) plasma heated by lower hybrid wave (LHW) and electron cyclotron resonance heating (ECRH) (LHW+ECRH). It is shown that the impurity confinement time (tau (imp)) in the L-mode plasma jointly heated by LHW and ECRH is weakly dependent on electron density but strongly dependent on the heating power, thus it is shorter than that in LHW-only heated L-mode plasma with the similar plasma parameters. The combined heating of LHW and ECRH can reduce the collisionality and indicates a more effective heating method for core tau (imp) reduction and normalized poloidal beta (beta (P)) improvement. It should be emphasized that in this high beta (P) operation window the small ELM regime can be accessed, and an L-mode level tau (imp) (40 ms-80 ms) and high beta (N) (similar to 1.7) can be obtained simultaneously. It means that this typical small ELMy H-mode regime has an advantage in avoiding the serious tungsten accumulation, and will be competitive in future long-pulse steady-state and high-performance operation with high-Z material plasma-facing components.
资助项目	National Key Research and Development Program of China[2018YFE031110] ; National Key Research and Development Program of China[2017YFE0301205] ; National Natural Science Foundation of China[11905146] ; National Natural Science Foundation of China[11775269] ; National Natural Science Foundation of China[11805113] ; Users with Excellence Program of Hefei Science Center, Chinese Academy of Sciences[2019HSC-UE014] ; Shenzhen Clean Energy Research Institute, China
WOS关键词	H-MODE ; TRANSPORT ; JET ; ACCUMULATION ; DISRUPTIONS ; CYCLOTRON ; SAWTOOTH ; PARTICLE ; PLASMAS ; SYSTEM
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000673147100001
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Users with Excellence Program of Hefei Science Center, Chinese Academy of Sciences ; Shenzhen Clean Energy Research Institute, China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/123565]
专题	中国科学院合肥物质科学研究院
通讯作者	Wu, Zhen-Wei; Zhang, Ling
作者单位	1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230031, Peoples R China 3.Shenzhen Univ, Coll Optoelect Engn, Minist Educ & Guangdong Prov, Key Lab Optoelect Devices & Syst, Shenzhen 518060, Peoples R China 4.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China
推荐引用方式 GB/T 7714	Xu, Zong,Wu, Zhen-Wei,Zhang, Ling,et al. Reduction of impurity confinement time by combined heating of LHW and ECRH in EAST*[J]. CHINESE PHYSICS B,2021,30.
APA	Xu, Zong.,Wu, Zhen-Wei.,Zhang, Ling.,Huang, Yue-Heng.,Gao, Wei.,...&Liu, Hai-Qing.(2021).Reduction of impurity confinement time by combined heating of LHW and ECRH in EAST*.CHINESE PHYSICS B,30.
MLA	Xu, Zong,et al."Reduction of impurity confinement time by combined heating of LHW and ECRH in EAST*".CHINESE PHYSICS B 30(2021).