L-H power threshold studies with tungsten/carbon divertor on the EAST tokamak

doi:10.1080/10420150.2016.1194417

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院等离子体物理研究所

	L-H power threshold studies with tungsten/carbon divertor on the EAST tokamak
	Chen, L.1,2 ; Xu, G. S.1,2; Gao, W.1; Zhang, L.1; Nielsen, A. H.3; Luo, Z. P.1; Si, H.1 ; Wang, Y. M.1; Qu, H.1; Sun, Z.1
刊名	RADIATION EFFECTS AND DEFECTS IN SOLIDS
	2016
卷号	171 期号:5-6 页码:359-373
关键词	L-h Transition Power Threshold Divertor Geometry Neutral Recycling Magnetic Configuration
DOI	10.1080/10420150.2016.1194417
文献子类	Article
英文摘要	The power threshold for low (L) to high (H) confinement mode transition achieved by radio-frequency heating and molybdenum first wall with lithium coating has been experimentally investigated on the EAST tokamak for two sets of divertor geometries and materials: tungsten/carbon divertor and full carbon divertor. For both sets of divertors, the power threshold was found to decrease with gradual accumulation of the lithium wall coating, suggesting the important role played by the low Z impurities and/or the edge neutral density on the L-H power threshold. When operating in the upper single null configuration, with the ion grad-B drift direction away from the primary X-point, a lower normalized power threshold is observed in EAST with the tungsten/carbon divertor, compared to the carbon divertor after intensive lithium wall coating. A newly installed cryopump increasing the pumping efficiency also plays an important part in the observed lower threshold. In addition, the H-mode in the Quasi-Snowflake divertor configuration has been obtained on EAST, exhibiting higher L-H power threshold compared to the lower single null configuration with similar I-P/B-T pairs.
WOS关键词	NEUTRAL DENSITY ; DIII-D ; MODE ; TRANSITION ; PLASMA ; CONFINEMENT
WOS研究方向	Nuclear Science & Technology ; Physics
语种	英语
WOS记录号	WOS:000382221100001
资助机构	National Natural Science Foundation of China(11175210 ; National Natural Science Foundation of China(11175210 ; National Natural Science Foundation of China(11175210 ; National Natural Science Foundation of China(11175210 ; National Natural Science Foundation of China(11175210 ; National Natural Science Foundation of China(11175210 ; National Natural Science Foundation of China(11175210 ; National Natural Science Foundation of China(11175210 ; SRG-HSC project(2015SRG-HSC002) ; SRG-HSC project(2015SRG-HSC002) ; SRG-HSC project(2015SRG-HSC002) ; SRG-HSC project(2015SRG-HSC002) ; SRG-HSC project(2015SRG-HSC002) ; SRG-HSC project(2015SRG-HSC002) ; SRG-HSC project(2015SRG-HSC002) ; SRG-HSC project(2015SRG-HSC002) ; National Magnetic Confinement Fusion Science Program of China(2015GB101000 ; National Magnetic Confinement Fusion Science Program of China(2015GB101000 ; National Magnetic Confinement Fusion Science Program of China(2015GB101000 ; National Magnetic Confinement Fusion Science Program of China(2015GB101000 ; 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SRG-HSC project(2015SRG-HSC002) ; SRG-HSC project(2015SRG-HSC002) ; SRG-HSC project(2015SRG-HSC002) ; SRG-HSC project(2015SRG-HSC002) ; SRG-HSC project(2015SRG-HSC002) ; SRG-HSC project(2015SRG-HSC002) ; SRG-HSC project(2015SRG-HSC002) ; SRG-HSC project(2015SRG-HSC002) ; National Magnetic Confinement Fusion Science Program of China(2015GB101000 ; National Magnetic Confinement Fusion Science Program of China(2015GB101000 ; National Magnetic Confinement Fusion Science Program of China(2015GB101000 ; National Magnetic Confinement Fusion Science Program of China(2015GB101000 ; National Magnetic Confinement Fusion Science Program of China(2015GB101000 ; National Magnetic Confinement Fusion Science Program of China(2015GB101000 ; National Magnetic Confinement Fusion Science Program of China(2015GB101000 ; National Magnetic Confinement Fusion Science Program of China(2015GB101000 ; Sino Danish Center for Education and Research ; Sino Danish Center for Education and Research ; Sino Danish Center for Education and Research ; 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内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/30830]
专题	合肥物质科学研究院_中科院等离子体物理研究所
作者单位	1.Chinese Acad Sci, Inst Plasma Phys, Hefei, Peoples R China 2.Univ Sci & Technol China, Dept Modern Phys, Hefei, Peoples R China 3.Tech Univ Denmark, Dept Phys, Fys Vej, Lyngby, Denmark 4.Dalian Univ Technol, Sch Phys & Optoelect Technol, Dalian, Peoples R China
推荐引用方式 GB/T 7714	Chen, L.,Xu, G. S.,Gao, W.,et al. L-H power threshold studies with tungsten/carbon divertor on the EAST tokamak[J]. RADIATION EFFECTS AND DEFECTS IN SOLIDS,2016,171(5-6):359-373.
APA	Chen, L..,Xu, G. S..,Gao, W..,Zhang, L..,Nielsen, A. H..,...&EAST Team.(2016).L-H power threshold studies with tungsten/carbon divertor on the EAST tokamak.RADIATION EFFECTS AND DEFECTS IN SOLIDS,171(5-6),359-373.
MLA	Chen, L.,et al."L-H power threshold studies with tungsten/carbon divertor on the EAST tokamak".RADIATION EFFECTS AND DEFECTS IN SOLIDS 171.5-6(2016):359-373.