Results from a new flowing liquid Li limiter with TZM substrate during high confinement plasmas in the EAST device

doi:10.1063/1.5143179

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

	Results from a new flowing liquid Li limiter with TZM substrate during high confinement plasmas in the EAST device
	Zuo, G.Z; Hu, J.S
刊名	Physics of Plasmas
	2020-05-12
卷号	27
ISSN号	1070-664X
DOI	10.1063/1.5143179
通讯作者	Zuo, G. Z.(zuoguizh@ipp.ac.cn) ; Hu, J. S.(hujs@ipp.ac.cn)
英文摘要	A third generation flowing liquid lithium (FLiLi) limiter with a substrate made of TZM, an alloy with>99% Mo, was fabricated by conventional manufacturing techniques. TZM has a high corrosion resistance, a high sputtering threshold, and a good wettability to Li, as compared to stainless steel (SS), which had been used as an FLiLi substrate surface in 2014 and 2016. The third generation FLiLi was inserted into the edge in EAST H-mode plasmas in an upper single-null configuration with an ion grad-B drift toward the upper divertor with a limiter temperature of 330-380 degrees C and an auxiliary heating power of about 2-8MW. Analysis has shown that by using TZM FLiLi, fuel particle recycling continuously decreased and near-complete edge localized mode elimination was achieved in H-mode plasmas with RF-only heating. The main impurities during the initial FLiLi discharges were Mo, Fe, and W resulting from strong plasma interaction at the Mo plate side, the SS collector, and the upper W divertor. Plasma stored energy increased by about 10kJ in subsequent FLiLi discharges due to decreased impurity radiation. Engineering analysis shows a uniform lithium flow with an similar to 80% Li coverage ratio on the limiter surface, similar to the second FLiLi, even though only one of two JxB pumps was functioning. Despite technical difficulties, the FLiLi gen.3 improved the overall plasma performance, providing support for flowing liquid Li plasma facing component applications in present and future devices. Published under license by AIP Publishing.
资助项目	National Key Research and Development Program of China[2017YFE0301100] ; National Key Research and Development Program of China[2017YFA0402500] ; National Key Research and Development Program of China[2018YFE0311100] ; National Natural Science Foundation of China[11775261] ; National Natural Science Foundation of China[11625524] ; National Natural Science Foundation of China[11605246] ; National Natural Science Foundation of China[11075185] ; National Natural Science Foundation of China[11021565] ; National Natural Science Foundation of China[11775269] ; National Natural Science Foundation of China[11905146] ; U.S. Department of Energy[DE-AC02-09CH11466]
WOS关键词	LITHIUM LIMITER ; TOKAMAK ; PROFILE ; HT-7
WOS研究方向	Physics
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:000536196700002
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; U.S. Department of Energy
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/43522]
专题	合肥物质科学研究院_中科院等离子体物理研究所
通讯作者	Zuo, G.Z
推荐引用方式 GB/T 7714	Zuo, G.Z,Hu, J.S. Results from a new flowing liquid Li limiter with TZM substrate during high confinement plasmas in the EAST device[J]. Physics of Plasmas,2020,27.
APA	Zuo, G.Z,&Hu, J.S.(2020).Results from a new flowing liquid Li limiter with TZM substrate during high confinement plasmas in the EAST device.Physics of Plasmas,27.
MLA	Zuo, G.Z,et al."Results from a new flowing liquid Li limiter with TZM substrate during high confinement plasmas in the EAST device".Physics of Plasmas 27(2020).