Simulation of tungsten target erosion and tungsten impurity transport during argon seeding on EAST

doi:10.1088/1361-6587/ac0351

	Simulation of tungsten target erosion and tungsten impurity transport during argon seeding on EAST
	Wang, Yilin 1; Sang, Chaofeng 1; Zhang, Chen 1; Zhao, Xuele 1; Zhang, Yanjie 1; Jia, Guozhang 3; Senichenkov, I. Yu 2; Wang, Liang 3; Zhou, Qingrui 1; Wang, Dezhen 1
刊名	PLASMA PHYSICS AND CONTROLLED FUSION
	2021-08-01
卷号	63
关键词	tungsten divertor argon seeding target erosion tungsten impurity transport tungsten core accumulation
ISSN号	0741-3335
DOI	10.1088/1361-6587/ac0351
通讯作者	Sang, Chaofeng(sang@dlut.edu.cn)
英文摘要	The upgrade of experimental advanced superconducting tokamak lower divertor to use tungsten (W) target is undertaken, however the target erosion and W impurity accumulation in the core pose a great challenge during high power discharge with external impurity seeding. This paper aims to study the influence of argon (Ar) seeding on the target erosion and the W impurity transport on steady-state operation. The scrape-off layer/divertor plasma as well as W impurity are self-consistently simulated by using SOLPS-ITER code package. With the constant input power, the Ar seeding rate is varied to study the changes on divertor plasma, incident Ar flux, the target erosion and W impurity transport. The simulation results indicate that the external Ar impurity influences W target erosion through both reducing the plasma temperature and introducing heavier incident particles, which significantly complicates the erosion process. The eroded W flux has great impact on the W core accumulation, and the divertor plasma condition influences W impurity transport remarkably. A correlation between peak electron temperature (T (e)) at the outer target and the W concentration (C (W)) at the core-edge-interface is found. Moreover, the influence of the W impurity on the background boundary plasma is also evaluated.
资助项目	National Key R&D Program of China[2017YFA0402500] ; National Key R&D Program of China[2018YFE0301101] ; National Key R&D Program of China[2017YFE0300402] ; National Natural Science Foundation of China[11775044] ; National Natural Science Foundation of China[12011530053] ; Fundamental Research Funds for the Central Universities[DUT21GJ204]
WOS关键词	DIVERTOR ; TOKAMAK ; EDGE
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000658873800001
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/123781]
专题	中国科学院合肥物质科学研究院
通讯作者	Sang, Chaofeng
作者单位	1.Dalian Univ Technol, Sch Phys, Minist Educ, Key Lab Mat Modificat Laser Ion & Electron Beams, Dalian 116024, Peoples R China 2.Peter Great St Petersburg Polytech Univ, Polytechnicheskaya Ul 29, St Petersburg 195251, Russia 3.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yilin,Sang, Chaofeng,Zhang, Chen,et al. Simulation of tungsten target erosion and tungsten impurity transport during argon seeding on EAST[J]. PLASMA PHYSICS AND CONTROLLED FUSION,2021,63.
APA	Wang, Yilin.,Sang, Chaofeng.,Zhang, Chen.,Zhao, Xuele.,Zhang, Yanjie.,...&Wang, Dezhen.(2021).Simulation of tungsten target erosion and tungsten impurity transport during argon seeding on EAST.PLASMA PHYSICS AND CONTROLLED FUSION,63.
MLA	Wang, Yilin,et al."Simulation of tungsten target erosion and tungsten impurity transport during argon seeding on EAST".PLASMA PHYSICS AND CONTROLLED FUSION 63(2021).