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	Effects of carbon impurities on the power radiation and tungsten target erosion in EAST
	Sang, Chaofeng1; Ding, Rui2; Bonnin, Xavier3; Wang, Liang1,2; Wang, Dezhen1
刊名	PHYSICS OF PLASMAS
	2018-07-01
卷号	25期号:7页码:16
ISSN号	1070-664X
DOI	10.1063/1.5038848
通讯作者	Sang, Chaofeng(sang@dlut.edu.cn)
英文摘要	Tungsten (W) and Carbon (C) are, respectively, used as the plasma-facing materials for upper and lower divertors in EAST. This provides an opportunity to study the plasma performance with both W and C divertors simultaneously. In this work, simulations are carried out by using the edge fluid-plasma/kinetic-neutral code SOLPS5.0-EIRENE99, with emphasis on the C impurity transport and its effect on the power radiation and erosion of the upper W divertor target. Three typical magnetic field equilibrium configurations, i.e., lower single null, upper single null (USN), and double null (DN), are studied. The main deuterium (D) plasma and C impurities at each ionization state and their neutrals are considered in the simulation. The SOLPS output such as averaged incident ion energy and particle flux density of each species are used to calculate the erosion rate of W walls using the empirical formula for physical sputtering yield. The transport and performance of C impurities on different plasma conditions of each configuration are investigated by changing the C source strength and upstream plasma density. The upper W target erosion by C ions under different conditions is also evaluated. The simulation results indicate that (1) carbon is a strong radiator in EAST divertor temperatures of 10-20 eV; (2) the amount of carbon transported from the lower carbon divertor to the upper tungsten divertor in both USN and DN configurations is predicted to be too small to cause significant W sputtering; and (3) C6+ dominates upper W erosion in the DN case. (C) 2018 Author(s).
资助项目	National Key R&D Program of China[2017YFA0402500] ; National Key R&D Program of China[2017YFE0300400] ; National Natural Science Foundation of China[11775044] ; Fundamental Research Funds for the Central Universities[DUT17LK30] ; AHNFS[1808085J07]
WOS关键词	SCRAPE-OFF LAYER ; PLASMA-FACING COMPONENTS ; ITER-LIKE WALL ; ASDEX UPGRADE ; DIVERTOR DETACHMENT ; PARTICLE CONTROL ; EDGE PLASMA ; CHAPTER 4 ; H-MODE ; TOKAMAK
WOS研究方向	Physics
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:000440589100046
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内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/37649]
专题	合肥物质科学研究院_中科院等离子体物理研究所
通讯作者	Sang, Chaofeng
作者单位	1.Dalian Univ Technol, Sch Phys, Key Lab Mat Modificat Laser Ion & Electron Beams, Minist Educ, Dalian 116024, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China 3.ITER Org, CS 90 046, Route Vinon Sur Verdon, F-13067 St Paul Les Durance, France
推荐引用方式 GB/T 7714	Sang, Chaofeng,Ding, Rui,Bonnin, Xavier,et al. Effects of carbon impurities on the power radiation and tungsten target erosion in EAST[J]. PHYSICS OF PLASMAS,2018,25(7):16.
APA	Sang, Chaofeng,Ding, Rui,Bonnin, Xavier,Wang, Liang,&Wang, Dezhen.(2018).Effects of carbon impurities on the power radiation and tungsten target erosion in EAST.PHYSICS OF PLASMAS,25(7),16.
MLA	Sang, Chaofeng,et al."Effects of carbon impurities on the power radiation and tungsten target erosion in EAST".PHYSICS OF PLASMAS 25.7(2018):16.

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