Tungsten control in type-I ELMy H-mode plasmas on EAST

doi:10.1007/s41365-021-00929-4

	Tungsten control in type-I ELMy H-mode plasmas on EAST
	Xu, Zong 1,2; Wu, Zhen-Wei 3; Zhang, Ling 3; Cheng, Yun-Xing 3,4; Gao, Wei 3; Lin, Xiao-Dong 1,2; Gao, Xiang 1,2,3; Chen, Ying-Jie 3; Huang, Yue-Heng 1,2; Huang, Juan 3
刊名	NUCLEAR SCIENCE AND TECHNIQUES
	2021-09-01
卷号	32
关键词	Tungsten accumulation Counter-NBI Favorable B-t ELMy H-mode EAST
ISSN号	1001-8042
DOI	10.1007/s41365-021-00929-4
通讯作者	Wu, Zhen-Wei(zwwu@ipp.ac.cn) ; Zhang, Ling(zhangling@ipp.ac.cn)
英文摘要	The first experimental investigation of the tungsten behavior in ELMy H-mode plasmas with co-/counter neutral beam injection (NBI) and unfavorable/favorable B-t was performed on EAST. Tungsten was found to accumulate easily in ELMy H-mode plasma with co-NBI heating and unfavorable B-t. Thus, in this case the tungsten concentration can exceed 10(-4), resulting in degradation of the plasma confinement and periodic H-L transitions. To reduce the tungsten concentration in steady-state type-I ELMy H-mode operation, counter-NBI is applied to modify the density and temperature and brake the plasma toroidal rotation. The applied counter-NBI decreases the PHZ + E-r inward pinch velocity and reverses the direction of neoclassical inward convection, thus decreasing the tungsten concentration from similar to 7 x 10(-5) to similar to 2 x 10(-5) in type-I ELMy H-mode plasma with favorable B-t. A comparison of the effects of different B-t directions on the tungsten behavior also shows that favorable B-t is beneficial for reducing the tungsten concentration in the core plasma. These results imply that counter-NBI with favorable B-t can effectively prevent tungsten accumulation and expand the operating window for exploring steady-state type-I ELMy H-mode operation of EAST.
资助项目	National Key R&D Program of China[2018YFE0311100] ; National Key R&D Program of China[2017YFE0301205] ; National Natural Science Foundation of China[11905146] ; National Natural Science Foundation of China[11775269] ; National Natural Science Foundation of China[11575244] ; National Natural Science Foundation of China[11575249] ; National Natural Science Foundation of China[11575235] ; National Natural Science Foundation of China[11422546] ; National Natural Science Foundation of China[11805133] ; National Natural Science Foundation of China[U19A20113] ; Users with Excellence Program of Hefei Science Center, CAS[2019HSC-UE014] ; National Magnetic Confinement Fusion Science Program of China[2015GB110005] ; National Magnetic Confinement Fusion Science Program of China[2015GB103003] ; National Magnetic Confinement Fusion Science Program of China[2015GB101002] ; National Magnetic Confinement Fusion Science Program of China[2015GB103000] ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSWSLH001] ; CASHIPS Director's Fund[BJPY2019A01] ; Shenzhen Clean Energy Research Institute
WOS关键词	IMPURITY TRANSPORT ; ISX-B ; TOKAMAK ; ACCUMULATION ; DISRUPTIONS ; SUPPRESSION ; DEPENDENCE ; ROTATION ; SYSTEM ; IONS
WOS研究方向	Nuclear Science & Technology ; Physics
语种	英语
出版者	SPRINGER SINGAPORE PTE LTD
WOS记录号	WOS:000693897600006
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Users with Excellence Program of Hefei Science Center, CAS ; National Magnetic Confinement Fusion Science Program of China ; Key Research Program of Frontier Sciences, CAS ; CASHIPS Director's Fund ; Shenzhen Clean Energy Research Institute
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/125269]
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.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China 2.Shenzhen Univ, Coll Optoelect Engn, Minist Educ & Guangdong Prov, Key Lab Optoelect Devices & Syst, Shenzhen 518060, Peoples R China 3.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 4.Univ Sci & Technol China, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Xu, Zong,Wu, Zhen-Wei,Zhang, Ling,et al. Tungsten control in type-I ELMy H-mode plasmas on EAST[J]. NUCLEAR SCIENCE AND TECHNIQUES,2021,32.
APA	Xu, Zong.,Wu, Zhen-Wei.,Zhang, Ling.,Cheng, Yun-Xing.,Gao, Wei.,...&Team, East.(2021).Tungsten control in type-I ELMy H-mode plasmas on EAST.NUCLEAR SCIENCE AND TECHNIQUES,32.
MLA	Xu, Zong,et al."Tungsten control in type-I ELMy H-mode plasmas on EAST".NUCLEAR SCIENCE AND TECHNIQUES 32(2021).