Preliminary study on heat load using calorimetric measurement during long-pulse high-performance discharges on EAST

doi:10.1088/1361-6587/aa5d88

	Preliminary study on heat load using calorimetric measurement during long-pulse high-performance discharges on EAST
	Liu,Y K 2,3; Hamada,N 1; Hanada,K 4; Gao,X 2; Liu,H Q 2; Yu,Y W 2; Qian,J P 2; Yang,L 2; Xu,T J 2; Jie,Y X 2
刊名	Plasma Physics and Controlled Fusion
	2017-03-06
卷号	59
关键词	heat load calorimetric measurement long pulse EAST 52.55.-s 52.50.-b 52.40.Hf
ISSN号	0741-3335
DOI	10.1088/1361-6587/aa5d88
英文摘要	Abstract Experimental Advanced Superconducting Tokamak (EAST) aims to demonstrate steady-state advanced high-performance H-mode plasmas with an ITER-like configuration, plasma control and heating schemes. The plasma-facing components in EAST are actively cooled, providing good conditions for researching long-pulse and high-energy discharges. A long-pulse high-performance plasma discharge (#59892 discharge) of up to 103 s with a core electron temperature of up to 4.5 keV was sustained with an injected energy exceeding 0.22 GJ in the 2015–2016 experimental campaign. A calorimetric measurement utilizing the temperature increment of cooling water is carried out to calculate the heat load on the strike point region of the lower divertor during long-pulse discharges in EAST. For the long-pulse and high-energy discharges, the comparison of the measurement results for the heat load measured by divertor Langmuir probes and the calorimetry diagnostic indicates that most of the heat load is delivered to the divertor panels as plasma, not radiation, and charge exchange neutrals. The ratio of the heat load on the strike point region of the lower divertor to the total injected energy is on average 42.5% per discharge with the lower single null divertor configuration. If the radiated energy loss measured by the fast bolometer diagnostic is taken into consideration, the ratio is found to be 61.6%. The experimental results and the analysis of the physics involved in these discharges are reported and discussed.
语种	英语
出版者	IOP Publishing
WOS记录号	IOP:0741-3335-59-4-AA5D88
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/42926]
专题	中国科学院合肥物质科学研究院
作者单位	1.Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 816-8580, Japan 2.Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China 3.University of Science and Technology of China, Hefei, 230026, People’s Republic of China 4.Research Institute for Applied Mechanics, Kyushu University, Fukuoka, 816-8580, Japan
推荐引用方式 GB/T 7714	Liu,Y K,Hamada,N,Hanada,K,et al. Preliminary study on heat load using calorimetric measurement during long-pulse high-performance discharges on EAST[J]. Plasma Physics and Controlled Fusion,2017,59.
APA	Liu,Y K.,Hamada,N.,Hanada,K.,Gao,X.,Liu,H Q.,...&Li,G S.(2017).Preliminary study on heat load using calorimetric measurement during long-pulse high-performance discharges on EAST.Plasma Physics and Controlled Fusion,59.
MLA	Liu,Y K,et al."Preliminary study on heat load using calorimetric measurement during long-pulse high-performance discharges on EAST".Plasma Physics and Controlled Fusion 59(2017).