Study of divertor heat flux widths in type-I ELMy H-mode with infra-red thermography on EAST tokamak

doi:10.1016/j.fusengdes.2016.02.078

	Study of divertor heat flux widths in type-I ELMy H-mode with infra-red thermography on EAST tokamak
	Zhang, Bin; Gong, Xianzu; Gan, Kaifu; Wang, Liang; Zhang, Xiaodong; Wang, Fumin; Yang, Zhendong; Wang, Xiaoqiong; Chen, Meiwen; EAST Team
	2016-04-01
发表期刊	FUSION ENGINEERING AND DESIGN
摘要	Characteristic widths of divertor power load footprints, i.e., power decay length lambda(q), Gaussian dissipation width S and integral power width lambda(int) in radio-frequency (RF) heated type-I ELMy H-modes are investigated with infra-red (IR) thermography diagnostic on experimental advanced superconducting tokamak (EAST). The fitting of divertor heat flux profile to Eich function is employed to obtain lambda(q) and S [2]. The heat flux widths on lower-outer (LO) divertor plates are found larger than those of lower-inner (LI) plates, and obvious multi-peak structures are found on LO divertor power load footprints. A comparison of LI heat flux widths of ELM-averaged in type-I ELMy H-mode to those within inter-ELM phases indicates that the widths are similar, in magnitude, for the two cases. The lambda(q) mapping to the outer mid-plane (OMP) from the LI divertor has a strong inverse dependence on I-p (or equivalently poloidal magnetic field at the OMP, B-p,B-omp) in the form of lambda(EAST,type-I)(q) = (2.45 +/- 0.3) x I-p(-1.01 +/- 0.11) (or lambda(EAST,type-I)(q) = (0.64 +/- 0.17) x B-p,omp(-1.02 +/- 0.14)), which is in satisfactory agreement, in tendency, with the multi-machine experimental scaling results and heuristic drift-based model proposed by Goldston. In addition, the linear regression of ELM-averaged S, on LI divertor during type-I ELMy H-mode, with I-p shows a decrease tendency, being consistent with the case of LO target in EAST type-III ELMy H-mode. This work may provide useful information for the extrapolation to ITER, whose baseline operation scenario is type-I ELMy H-mode. (c) 2016 Elsevier B.V. All rights reserved.
文章类型	Article
关键词	Heat Flux Widths Infra-red Thermography Type-i Elmy H-mode East
WOS标题词	Science & Technology ; Technology
DOI	10.1016/j.fusengdes.2016.02.078
关键词[WOS]	PARTICLE
收录类别	SCI
语种	英语
项目资助者	National Magnetic Confinement Fusion Science Program of China(2014GB101001 ; National Magnetic Confinement Fusion Science Program of China(2014GB101001 ; National Magnetic Confinement Fusion Science Program of China(2014GB101001 ; National Magnetic Confinement Fusion Science Program of China(2014GB101001 ; National Magnetic Confinement Fusion Science Program of China(2014GB101001 ; National Magnetic Confinement Fusion Science Program of China(2014GB101001 ; National Magnetic Confinement Fusion Science Program of China(2014GB101001 ; National Magnetic Confinement Fusion Science Program of China(2014GB101001 ; National Magnetic Confinement Fusion Science Program of China(2014GB101001 ; National Magnetic Confinement Fusion Science Program of China(2014GB101001 ; National Magnetic Confinement Fusion Science Program of China(2014GB101001 ; National Magnetic Confinement Fusion Science Program of China(2014GB101001 ; National Magnetic Confinement Fusion Science Program of China(2014GB101001 ; National Magnetic Confinement Fusion Science Program of China(2014GB101001 ; National Magnetic Confinement Fusion Science Program of China(2014GB101001 ; National Magnetic Confinement Fusion Science Program of China(2014GB101001 ; National Natural Science Foundation of China(11575236) ; National Natural Science Foundation of China(11575236) ; National Natural Science Foundation of China(11575236) ; National Natural Science Foundation of China(11575236) ; National Natural Science Foundation of China(11575236) ; National Natural Science Foundation of China(11575236) ; National Natural Science Foundation of China(11575236) ; National Natural Science Foundation of China(11575236) ; National Natural Science Foundation of China(11575236) ; National Natural Science Foundation of China(11575236) ; National Natural Science Foundation of China(11575236) ; National Natural Science Foundation of China(11575236) ; National Natural Science Foundation of China(11575236) ; National Natural Science Foundation of China(11575236) ; National Natural Science Foundation of China(11575236) ; National Natural Science Foundation of China(11575236) ; 2014GB101002 ; 2014GB101002 ; 2014GB101002 ; 2014GB101002 ; 2014GB101002 ; 2014GB101002 ; 2014GB101002 ; 2014GB101002 ; 2014GB101002 ; 2014GB101002 ; 2014GB101002 ; 2014GB101002 ; 2014GB101002 ; 2014GB101002 ; 2014GB101002 ; 2014GB101002 ; 2013GB107003) ; 2013GB107003) ; 2013GB107003) ; 2013GB107003) ; 2013GB107003) ; 2013GB107003) ; 2013GB107003) ; 2013GB107003) ; 2013GB107003) ; 2013GB107003) ; 2013GB107003) ; 2013GB107003) ; 2013GB107003) ; 2013GB107003) ; 2013GB107003) ; 2013GB107003)
WOS研究方向	Nuclear Science & Technology
WOS类目	Nuclear Science & Technology
WOS记录号	WOS:000374425800010
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/21931
专题	中科院等离子体物理研究所
作者单位	Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, 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	Zhang, Bin,Gong, Xianzu,Gan, Kaifu,et al. Study of divertor heat flux widths in type-I ELMy H-mode with infra-red thermography on EAST tokamak[J]. FUSION ENGINEERING AND DESIGN,2016,105(无):70-76.
APA	Zhang, Bin.,Gong, Xianzu.,Gan, Kaifu.,Wang, Liang.,Zhang, Xiaodong.,...&EAST Team.(2016).Study of divertor heat flux widths in type-I ELMy H-mode with infra-red thermography on EAST tokamak.FUSION ENGINEERING AND DESIGN,105(无),70-76.
MLA	Zhang, Bin,et al."Study of divertor heat flux widths in type-I ELMy H-mode with infra-red thermography on EAST tokamak".FUSION ENGINEERING AND DESIGN 105.无(2016):70-76.

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