Experimental study of the influence of gas puff locations on H-mode boundary plasmas with argon seeding on EAST

doi:10.1088/1361-6587/ac0354

	Experimental study of the influence of gas puff locations on H-mode boundary plasmas with argon seeding on EAST
	He, Tao 2,3; Yang, Zhongshi 3; Wang, Liang 3; Li, Kedong 2,3; Wang, Huiqian 1; Eldon, David 1; Hyatt, Alan 1; Humphreys, David 1; Meng, Lingyi 2,3; Ding, Fang 3
刊名	PLASMA PHYSICS AND CONTROLLED FUSION
	2021-08-01
卷号	63
关键词	radiative divertor argon puff locations poloidal asymmetry energy detachment
ISSN号	0741-3335
DOI	10.1088/1361-6587/ac0354
通讯作者	He, Tao() ; Yang, Zhongshi(zsyang@ipp.ac.cn) ; Wang, Liang(lwang@ipp.ac.cn)
英文摘要	To investigate the optimal scenario of impurity seeding to obtain divertor plasma detachment for target protection, experiments with Ar&D-2 seeding from two different poloidal locations, the upper outer (UO) divertor target and lower outer (LO) target, were carried out on EAST. Partial energy detachment (the electron temperature near the strike point T (e,spt) <= 10 eV) were obtained with Ar&D-2 mixture puffing from the UO target and, for the first time, from the LO target into H-mode plasmas in the upper single null (USN) configuration. The peak heat flux q (t) on the UO target was significantly reduced (by similar to 80%). The rollover of ion flux density j (s) did not appear probably due to insufficient momentum loss, which is independent of the puff locations. The poloidal asymmetries of particle and heat fluxes on the targets have also been investigated. The UO-dominant asymmetry of particle flux was reversed, while the UO-dominant asymmetry of heat flux was mitigated but not reversed. The plasma confinement dropped by only 14% and 8.2% in the LO-puff case and UO-puff case, respectively, during detachment. The high level of C may contributed greatly to the higher radiation in the bulk plasma region and the greater decline in W (MHD) in the LO-puff case.
资助项目	National Key Research & Development Program of China[2018YFE0303103] ; National Key Research & Development Program of China[2017YFE0301300] ; National Natural Science Foundation of China[11875287] ; National Natural Science Foundation of China[11922513] ; National Natural Science Foundation of China[11705233] ; Anhui Provincial Natural Science Foundation[2008085QA38] ; Special Research Assistant Funding of CAS
WOS关键词	DIVERTOR ; RADIATION ; SOL ; PERFORMANCE ; PROFILE ; FLOW
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000658868300001
资助机构	National Key Research & Development Program of China ; National Natural Science Foundation of China ; Anhui Provincial Natural Science Foundation ; Special Research Assistant Funding of CAS
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/123860]
专题	中国科学院合肥物质科学研究院
通讯作者	He, Tao; Yang, Zhongshi; Wang, Liang
作者单位	1.Gen Atom, POB 85608, San Diego, CA 92186 USA 2.Univ Sci & Technol China, 96 Jinzhai Rd, Hefei 230026, Anhui, Peoples R China 3.Chinese Acad Sci, Inst Plasma Phys, HFIPS, Hefei 230031, Anhui, Peoples R China 4.Anhui Univ Sci & Technol, Sch Mech Engn, Huainan 232001, Peoples R China
推荐引用方式 GB/T 7714	He, Tao,Yang, Zhongshi,Wang, Liang,et al. Experimental study of the influence of gas puff locations on H-mode boundary plasmas with argon seeding on EAST[J]. PLASMA PHYSICS AND CONTROLLED FUSION,2021,63.
APA	He, Tao.,Yang, Zhongshi.,Wang, Liang.,Li, Kedong.,Wang, Huiqian.,...&Luo, Guang-Nan.(2021).Experimental study of the influence of gas puff locations on H-mode boundary plasmas with argon seeding on EAST.PLASMA PHYSICS AND CONTROLLED FUSION,63.
MLA	He, Tao,et al."Experimental study of the influence of gas puff locations on H-mode boundary plasmas with argon seeding on EAST".PLASMA PHYSICS AND CONTROLLED FUSION 63(2021).