Understanding core heavy impurity transport in a hybrid discharge on EAST

doi:10.1088/1741-4326/ac3e3b

	Understanding core heavy impurity transport in a hybrid discharge on EAST
	Shi, Shengyu 1,2; Chen, Jiale 2; Bourdelle, Clarisse 3; Jian, Xiang 4,5; Odstrcil, Tomas 5; Garofalo, Andrea M.5; Cheng, Yunxin 2; Chao, Yan 2; Zhang, Ling 2; Duan, Yanmin 2
刊名	NUCLEAR FUSION
	2022-06-01
卷号	62
关键词	EAST hybrid scenario heavy high-Z impurity W accumulation neoclassical and turbulent transport of W
ISSN号	0029-5515
DOI	10.1088/1741-4326/ac3e3b
通讯作者	Chen, Jiale(chen@ipp.ac.cn) ; Bourdelle, Clarisse(Clarisse.BOURDELLE@cea.fr)
英文摘要	The behavior of heavy/high-Z impurity tungsten (W) in the core of hybrid (high normalized beta beta (N) plasmas) scenario on EAST with international thermonuclear experimental reactor-like divertor is analyzed. W accumulation is often observed and seriously degrades the plasma performance (Gao et al 2017 Nucl. Fusion 57 056021). The dynamics of the W accumulation process of a hybrid discharge are examined considering the concurrent evolution of the background plasma parameters. It is found that the toroidal rotation and density peaking of the bulk plasma are usually large in the central region, which is particularly prone to the W accumulation. A time slice during the W accumulation phase is modeled, accounting for both neoclassical and turbulent transport components of W, through NEO with poloidal asymmetry effects induced by toroidal rotation, and TGLF, respectively. This modeling reproduces the experimental observations of W accumulation and identifies the neoclassical inward convection/pinch velocity of W due to the large density peaking of the bulk plasma and toroidal rotation in the central region as one of the main reasons for the W accumulation. In addition, the NEO + TGLF + STRAHL modeling can not only predict the core W density profile but also closely reconstruct the radiated information mainly produced by W in the experiment.
资助项目	National Nature Science Foundation of China[12175277] ; National Nature Science Foundation of China[11975271]
WOS关键词	HIGH-PERFORMANCE DISCHARGES ; ADVANCED SCENARIOS ; ASDEX ; TUNGSTEN ; PROFILE ; JET ; ACCUMULATION
WOS研究方向	Physics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:000783981900001
资助机构	National Nature Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/128503]
专题	中国科学院合肥物质科学研究院
通讯作者	Chen, Jiale; Bourdelle, Clarisse
作者单位	1.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 3.IRFM, CEA, F-13108 St Paul Les Durance, France 4.Univ Calif San Diego, Ctr Energy Res, La Jolla, CA 92093 USA 5.Gen Atom, POB 85608, San Diego, CA 92186 USA
推荐引用方式 GB/T 7714	Shi, Shengyu,Chen, Jiale,Bourdelle, Clarisse,et al. Understanding core heavy impurity transport in a hybrid discharge on EAST[J]. NUCLEAR FUSION,2022,62.
APA	Shi, Shengyu.,Chen, Jiale.,Bourdelle, Clarisse.,Jian, Xiang.,Odstrcil, Tomas.,...&Gao, Xiang.(2022).Understanding core heavy impurity transport in a hybrid discharge on EAST.NUCLEAR FUSION,62.
MLA	Shi, Shengyu,et al."Understanding core heavy impurity transport in a hybrid discharge on EAST".NUCLEAR FUSION 62(2022).