Equilibrium effects on the structure of island divertor and its impact on the divertor heat flux distribution in Wendelstein 7-X

doi:10.1088/1741-4326/ac8439

	Equilibrium effects on the structure of island divertor and its impact on the divertor heat flux distribution in Wendelstein 7-X
	Zhou, S.7,8; Liang, Y.6,7,8; Knieps, A.7; Suzuki, Y.1,2,5; Geiger, J.4; Dinklage, A.4; Langenberg, A.4; Pasch, E.4; Jakubowski, M.4; Pablant, N.3
刊名	NUCLEAR FUSION
	2022-10-01
卷号	62
关键词	equilibrium effects island divertor stochastization heat flux
ISSN号	0029-5515
DOI	10.1088/1741-4326/ac8439
通讯作者	Liang, Y.(y.liang@fz-juelich.de)
英文摘要	To support the planning of high-performance long-pulse plasma operation for W7-X, the role of equilibrium effects for the structure of island divertor and its profound impacts on the divertor heat flux distribution have been investigated. Finite-beta full-field three-dimensional equilibria for the four most important configurations of W7-X ('standard', 'high-mirror', 'high-iota' and 'low-iota') were obtained with the HINT code. Equilibrium calculations show a strong dependence of the edge stochastization on the magnetic configurations. Parameterization to estimate equilibrium effects on edge stochastization and plasma shape was attempted for individual functions. The results indicate that a more stochastic boundary can be attained with increasing plasma beta, except for the low-iota configuration. According to fully diffusive heat-load estimations, it turns out that equilibrium effects are beneficial for spreading the heat flux on the divertor target. The interactions of the beta effects with effects driven by the toroidal plasma current are also analyzed for the standard configuration. Infrared camera measurements confirm the predictions concerning global heat load distributions.
资助项目	European Union via the Euratom Research and Training Programme[101052200-EUROfusion] ; National Key R&D Program of China[2018YFE0309100] ; National Natural Science Foundation of China[51821005]
WOS关键词	EDGE REGION ; STOCHASTICITY ; SYSTEM ; W7-X ; 3D
WOS研究方向	Physics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:000842726700001
资助机构	European Union via the Euratom Research and Training Programme ; National Key R&D Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/132055]
专题	中国科学院合肥物质科学研究院
通讯作者	Liang, Y.
作者单位	1.Grad Univ Adv Studies Sokendai, Hayama, Kanagawa, Japan 2.Natl Inst Fus Sci, Toki, Gifu, Japan 3.Princeton Plasma Phys Lab, Princeton, NJ 08540 USA 4.Max Planck Inst Plasma Phys, D-17491 Greifswald, Germany 5.Hiroshima Univ, Grad Sch Adv Sci & Engn, Higashihiroshima 7398527, Japan 6.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 7.Forschungszentrum Julich, Inst Energie & Klimaforsch Plasmaphys, Partner Trilateral Euregio Cluster TEC, D-52425 Julich, Germany 8.Huazhong Univ Sci & Technol, Sch Elect & Elect Engn, State Key Lab Adv Electromagnet Engn & Technol, Int Joint Res Lab Magnet Confinement Fus & Plasma, Wuhan 430074, Peoples R China
推荐引用方式 GB/T 7714	Zhou, S.,Liang, Y.,Knieps, A.,et al. Equilibrium effects on the structure of island divertor and its impact on the divertor heat flux distribution in Wendelstein 7-X[J]. NUCLEAR FUSION,2022,62.
APA	Zhou, S..,Liang, Y..,Knieps, A..,Suzuki, Y..,Geiger, J..,...&Huang, Z..(2022).Equilibrium effects on the structure of island divertor and its impact on the divertor heat flux distribution in Wendelstein 7-X.NUCLEAR FUSION,62.
MLA	Zhou, S.,et al."Equilibrium effects on the structure of island divertor and its impact on the divertor heat flux distribution in Wendelstein 7-X".NUCLEAR FUSION 62(2022).