An interpretive model for the double peaks of divertor tungsten erosion during type-I ELMs in EAST

doi:10.1088/1741-4326/ac086a

	An interpretive model for the double peaks of divertor tungsten erosion during type-I ELMs in EAST
	Xu, Guoliang 2,3,4; Ding, Rui 5; Ding, Fang 5; Chen, Xiahua 5; Qian, Xinyuan 2,3,4; Brezinsek, Sebastijan 1; Gao, Xiang 2,3,4; Zang, Qing 2,3,4; Wang, Liang 5; Jie, Yinxian 2,3,4
刊名	NUCLEAR FUSION
	2021-08-01
卷号	61
关键词	divertor tungsten erosion edge-localized mode EAST
ISSN号	0029-5515
DOI	10.1088/1741-4326/ac086a
通讯作者	Ding, Rui(rding@ipp.ac.cn)
英文摘要	Double peaks of divertor tungsten erosion during type-I edge-localized modes (ELMs) were observed in the EAST tokamak. To study this unique phenomenon, an analytical model of plasma expansion into vacuum was used to investigate the ELM parallel transport along the magnetic field line to the divertor target. The modeling results reveal that during ELM bursts, the energetic C6+ transport is slower than the main ions due to a lower initial thermal speed. The time of C6+ arriving at the divertor target from the modeling is consistent with the second tungsten erosion peak. Based on the particle flux from the transport model, a newly developed mixed-material model quantitively reproduced the intra-ELM tungsten erosion profiles for both deuterium and helium discharges. A lithium-carbon coating makes the heavier impurity (C6+) comparatively more effective than the main ions on tungsten sputtering, and thus makes the second tungsten erosion peak more remarkable on EAST experiments.
资助项目	National Natural Science Foundation of China[12022511] ; National Natural Science Foundation of China[12005143] ; National Natural Science Foundation of China[11861131010] ; National Key Research and Development Program of China[2017YFE0301300] ; National Key Research and Development Program of China[2017YFA0402500] ; Postdoctoral Science Foundation of China[2020M672764] ; Key Research Program of Frontier Sciences, CAS[ZDBS-LY-SLH010] ; National MCF Energy R&D Program of China[2019YFE03080100] ; CASHIPS Director's Fund[BJPY2019B01] ; Shenzhen Clean Energy Research Institute
WOS关键词	LITHIUM ; EXPANSION ; LAYER ; WALL
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000672142800001
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China ; Postdoctoral Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; National MCF Energy R&D Program of China ; 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/334002/123592]
专题	中国科学院合肥物质科学研究院
通讯作者	Ding, Rui
作者单位	1.Forschungszentrum Julich, Partner Trilateral Euregio Cluster TEC, Inst Energie & Klimaforsch Plasmaphys, D-52425 Julich, Germany 2.Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China 3.Shenzhen Univ, Coll Phys & Optoelect Engn, Key Lab Optoelect Devices & Syst, Minist Educ & Guangdong Prov, Shenzhen 518060, Peoples R China 4.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China 5.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Xu, Guoliang,Ding, Rui,Ding, Fang,et al. An interpretive model for the double peaks of divertor tungsten erosion during type-I ELMs in EAST[J]. NUCLEAR FUSION,2021,61.
APA	Xu, Guoliang.,Ding, Rui.,Ding, Fang.,Chen, Xiahua.,Qian, Xinyuan.,...&Wan, Yuanxi.(2021).An interpretive model for the double peaks of divertor tungsten erosion during type-I ELMs in EAST.NUCLEAR FUSION,61.
MLA	Xu, Guoliang,et al."An interpretive model for the double peaks of divertor tungsten erosion during type-I ELMs in EAST".NUCLEAR FUSION 61(2021).