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

HFCAS OpenIR

	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
	2021-09-01
发表期刊	PLASMA PHYSICS AND CONTROLLED FUSION
ISSN	0741-3335
通讯作者	Ye, Minyou(yemy@ustc.edu.cn)
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.
关键词	CFETR tungsten OEDGE scrape-off layer transport
DOI	10.1088/1361-6587/ac11b3
关键词[WOS]	ONION-SKIN MODEL ; IMPURITY TRANSPORT ; DIVERTOR PLASMA ; DESIGN ; SOL
收录类别	SCI
语种	英语
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
项目资助者	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
WOS研究方向	Physics
WOS类目	Physics, Fluids & Plasmas
WOS记录号	WOS:000675611800001
出版者	IOP PUBLISHING LTD
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/123279
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).