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

doi:10.1080/10420150.2016.1194417

	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 ; Duan, Y. M.1; Liu, H. Q.1; Wang, S. X.1; Li, M. H.1; Zhang, X. J.1; Wu, B.1 ; Chen, R.1 ; Wang, L.1,4; Wang, H. Q.1; Ding, S. Y.1; Yan, N.1 ; Liu, S. C.1; Shao, L. M.1; Zhang, W.1 ; Hu, G. H.1; Li, J.1; Li, Y. L.1; Wu, X. Q.1; Zhao, N.1; Jia, M. N.1; EAST Team 1
	2016
发表期刊	RADIATION EFFECTS AND DEFECTS IN SOLIDS
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.
文章类型	Article
关键词	L-h Transition Power Threshold Divertor Geometry Neutral Recycling Magnetic Configuration
WOS标题词	Science & Technology ; Technology ; Physical Sciences
DOI	10.1080/10420150.2016.1194417
关键词[WOS]	NEUTRAL DENSITY ; DIII-D ; MODE ; TRANSITION ; PLASMA ; CONFINEMENT
收录类别	SCI
语种	英语
项目资助者	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 ; 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 ; Sino Danish Center for Education and Research ; Sino Danish Center for Education and Research ; Sino Danish Center for Education and Research ; Sino Danish Center for Education and Research ; Sino Danish Center for Education and Research ; 11422546 ; 11422546 ; 11422546 ; 11422546 ; 11422546 ; 11422546 ; 11422546 ; 11422546 ; 2014GB124006 ; 2014GB124006 ; 2014GB124006 ; 2014GB124006 ; 2014GB124006 ; 2014GB124006 ; 2014GB124006 ; 2014GB124006 ; 11575235 ; 11575235 ; 11575235 ; 11575235 ; 11575235 ; 11575235 ; 11575235 ; 11575235 ; 2013GB106003 ; 2013GB106003 ; 2013GB106003 ; 2013GB106003 ; 2013GB106003 ; 2013GB106003 ; 2013GB106003 ; 2013GB106003 ; 11575236 ; 11575236 ; 11575236 ; 11575236 ; 11575236 ; 11575236 ; 11575236 ; 11575236 ; 2013GB107000) ; 2013GB107000) ; 2013GB107000) ; 2013GB107000) ; 2013GB107000) ; 2013GB107000) ; 2013GB107000) ; 2013GB107000) ; 11321092 ; 11321092 ; 11321092 ; 11321092 ; 11321092 ; 11321092 ; 11321092 ; 11321092 ; 11575244 ; 11575244 ; 11575244 ; 11575244 ; 11575244 ; 11575244 ; 11575244 ; 11575244 ; 11405210) ; 11405210) ; 11405210) ; 11405210) ; 11405210) ; 11405210) ; 11405210) ; 11405210)
WOS研究方向	Nuclear Science & Technology ; Physics
WOS类目	Nuclear Science & Technology ; Physics, Fluids & Plasmas ; Physics, Condensed Matter
WOS记录号	WOS:000382221100001
引用统计
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/30830
专题	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
第一作者单位	中科院等离子体物理研究所
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.

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