Simulation study of the influence on the tungsten concentration due to the cross-field transport in the scrape-off layer

doi:10.1088/1361-6587/ac11b3

	Simulation study of the influence on the tungsten concentration due to the cross-field transport in the scrape-off layer
	Xu, Yuchen 1; Xu, Guoliang ; Mao, Shifeng 1,2; Ye, Minyou 1
刊名	PLASMA PHYSICS AND CONTROLLED FUSION
	2021-09-01
卷号	63
关键词	CFETR tungsten OEDGE scrape-off layer transport
ISSN号	0741-3335
DOI	10.1088/1361-6587/ac11b3
通讯作者	Ye, Minyou(yemy@ustc.edu.cn)
英文摘要	It is critical to keep a low level of tungsten impurity concentration in the core plasma of the fusion reactor. Using the OEDGE code, the influence on the tungsten concentration due to the cross-field transport in the scrape-off layer is studied. Based on the design parameters of the China Fusion Engineering Test Reactor, the background plasma with the peak target electron temperature of 15 eV is generated using the onion-skin model. The neon impurity with the assumed concentration of 0.2% inside the separatrix is included for estimating the tungsten sputtering source. In a series of simulations of tungsten transport, the diffusion coefficient D (perpendicular to) is varied from 0.1 to 10 m(2) s(-1), and the hypothetical inward pinch velocity V (IMP) is in the range of 0-5 m s(-1). The tungsten concentration inside the separatrix increases with decreasing diffusion coefficient and exceeds 10(-5) for the diffusion coefficient lower than about 0.2 m(2) s(-1). When the hypothetical inward pinch is included, the tungsten concentration increases. The relation between the relative increase in tungsten concentration and V (IMP)/D (perpendicular to) is fitted.
资助项目	National Natural Science Foundation of China[11975232] ; National Key Research and Development Program of China[2018YFE0302101] ; Collaborative Innovation Program of Hefei Science Center CAS[2020HSC-CIP015] ; Supercomputing Center of University of Science and Technology of China
WOS关键词	ONION-SKIN MODEL ; IMPURITY TRANSPORT ; DIVERTOR PLASMA ; DESIGN ; SOL
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000675611800001
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China ; Collaborative Innovation Program of Hefei Science Center CAS ; Supercomputing Center of University of Science and Technology of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/123278]
专题	中国科学院合肥物质科学研究院
通讯作者	Ye, Minyou
作者单位	1.Univ Sci & Technol China, Sch Nucl Sci & Technol, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Xu, Yuchen,Xu, Guoliang,Mao, Shifeng,et al. Simulation study of the influence on the tungsten concentration due to the cross-field transport in the scrape-off layer[J]. PLASMA PHYSICS AND CONTROLLED FUSION,2021,63.
APA	Xu, Yuchen,Xu, Guoliang,Mao, Shifeng,&Ye, Minyou.(2021).Simulation study of the influence on the tungsten concentration due to the cross-field transport in the scrape-off layer.PLASMA PHYSICS AND CONTROLLED FUSION,63.
MLA	Xu, Yuchen,et al."Simulation study of the influence on the tungsten concentration due to the cross-field transport in the scrape-off layer".PLASMA PHYSICS AND CONTROLLED FUSION 63(2021).