Studies of material migration and deposition after the 2017 experimental campaign in EAST

doi:10.1016/j.nme.2021.101103

	Studies of material migration and deposition after the 2017 experimental campaign in EAST
	Yan, Rong 2; Peng, Jiao 2; Li, Changjun 2; Xu, Guoliang 2; Ding, Rui 2; Zheng, Wei 2; Gao, Binfu 2; Zhu, Dahuan 2; Wang, Baoguo 2; Mu, Lei 2
刊名	NUCLEAR MATERIALS AND ENERGY
	2022-03-01
卷号	30
关键词	Tokamak Plasma-facing material Deposition Migration
DOI	10.1016/j.nme.2021.101103
通讯作者	Peng, Jiao(pengjiao@ipp.ac.cn) ; Ding, Rui(rding@ipp.ac.cn)
英文摘要	Plasma-wall interaction is one of the key issues in tokamaks, as the material erosion and deposition will strongly influence the lifetime of plasma facing materials, fuel retention and plasma performance. Material migration and deposition have been firstly analyzed after the 2017 experimental campaign in EAST with tungsten (W) upper divertor, molybdenum inner wall and graphite lower divertor. It is found that the deposited elements on plasma-facing materials (PFMs) mainly consisted of Li, C, O, W and Mo etc, which was from the deposition of wall conditioning material and the sputtering of PFMs. More than 90 wt% of the deposits were lithium carbonate and lithium hydroxide due to the routine lithium wall conditioning in EAST. Quantitative characterization of element density on graphite tile from lower inner divertor showed that W and Mo deposition increased when closer to the lower divertor, which is consistent with the decreasing normalized poloidal magnetic flux. The element composition of PFMs along poloidal direction has been measured by handheld X-ray fluorescence (XRF). The concentration of deposited Mo and W is less than 0.2 wt% on most of the PFM surface. Double peaks of W concentration near the upper W divertor and at the midplane tile were observed on the TZM inner wall surface at the high-field side, which can be explained by higher redeposition at the location near the upper inner divertor or with a smaller normalized poloidal magnetic flux. Besides, more redeposited Mo and W was found at the inner and outer divertor near strike points compared with the dome region.
资助项目	National key R&D project of China[2017YFA0402500] ; National key R&D project of China[2017YFE0301300] ; National key R&D project of China[2017YFE0302500] ; National Nature Science Foundation of China[12022511] ; National Nature Science Foundation of China[11975269] ; National Nature Science Foundation of China[12075279] ; National Nature Science Foundation of China[11905252] ; National Nature Science Foundation of China[12005143] ; Users with Excellence Program of Hefei Science Center CAS[2020HSC-UE007] ; CASHIPS Director's Fund[BJPY2019B01] ; Key Research Program of Frontier Sciences of CAS[ZDBS-LY-SLH010] ; Sichuan Science and Technology program[2021YFSY0015] ; Open Fund of Magnetic Confinement Fusion Laboratory of Anhui Province[2021AMF01003]
WOS关键词	FUEL RETENTION ; DIVERTOR ; GRAPHITE
WOS研究方向	Nuclear Science & Technology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000732930500001
资助机构	National key R&D project of China ; National Nature Science Foundation of China ; Users with Excellence Program of Hefei Science Center CAS ; CASHIPS Director's Fund ; Key Research Program of Frontier Sciences of CAS ; Sichuan Science and Technology program ; Open Fund of Magnetic Confinement Fusion Laboratory of Anhui Province
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/126972]
专题	中国科学院合肥物质科学研究院
通讯作者	Peng, Jiao; Ding, Rui
作者单位	1.Anhui Agr Univ, Biotechnol Ctr, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 3.Sichuan Univ, Inst Nucl Sci & Technol, Key Lab Radiat Phys & Technol, Minist Educ, Chengdu 610064, Peoples R China 4.Anhui Jianzhu Univ, Sch Math & Phys, Hefei 230601, Peoples R China
推荐引用方式 GB/T 7714	Yan, Rong,Peng, Jiao,Li, Changjun,et al. Studies of material migration and deposition after the 2017 experimental campaign in EAST[J]. NUCLEAR MATERIALS AND ENERGY,2022,30.
APA	Yan, Rong.,Peng, Jiao.,Li, Changjun.,Xu, Guoliang.,Ding, Rui.,...&Si, Xiongyuan.(2022).Studies of material migration and deposition after the 2017 experimental campaign in EAST.NUCLEAR MATERIALS AND ENERGY,30.
MLA	Yan, Rong,et al."Studies of material migration and deposition after the 2017 experimental campaign in EAST".NUCLEAR MATERIALS AND ENERGY 30(2022).