Effect of continuously flowing liquid Li limiter on particle and heat fluxes during H-mode discharges in EAST

被引：7

作者：

Zuo, G. Z. ^{[1
]}

Li, C. L. ^{[1
,2
]}

Maingi, R. ^{[3
]}

Meng, X. C. ^{[1
,4
]}

Andruczyk, D. ^{[5
]}

Sun, P. J. ^{[1
]}

Sun, Z. ^{[1
,3
]}

Xu, W. ^{[1
,4
]}

Huang, M. ^{[1
]}

Tang, Z. L. ^{[1
]}

Zhang, D. H. ^{[1
]}

Chen, Y. J. ^{[1
]}

Zang, Q. ^{[1
]}

Wang, Y. M. ^{[1
]}

Wang, Y. F. ^{[1
]}

Tritz, K. ^{[6
]}

Hu, J. S. ^{[1
,7
]}

机构：

[1] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China

[2] Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China

[3] Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA

[4] Hefei Comprehens Natl Sci Ctr, Inst Energy, Hefei 230031, Peoples R China

[5] Univ Illinois, Ctr Plasma Mat Interact, Champaign, MD 21211 USA

[6] Johns Hopkins Univ, Baltimore, MD 21211 USA

[7] Chinese Acad Sci, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China

来源：

NUCLEAR MATERIALS AND ENERGY | 2022年 / 33卷

关键词：

Liquid Li; Particle flux; Heat flux; H; -mode; EAST; LITHIUM; PERFORMANCE; TOKAMAK; METAL;

D O I：

10.1016/j.nme.2022.101263

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Particle and heat fluxes were successfully controlled by using a continuously flowing liquid Li (FLiLi) limiter in the H-mode discharges with high plasma heating power in the Experimental Advanced Superconducting Tokamak device. There were strong interactions between the FLiLi limiter and high-power plasma with a -8.3 MW source heating power, and successively, a bright Li radiation ring was produced, which effectively decreased fuel particle recycling by approximately 50%. Due to Li efflux from FLiLi during a series of high-power dis-charges, an obvious real-time wall conditioning effect was produced, and fuel particle recycling further decreased. Moreover, the value of Z(eff )decreased from 2.3 to 1.6 due to a decrease in impurity sources; this was attributed to the accumulation of Li deposited on the first wall, which effectively protected the wall materials. The decreased recycling and impurity radiation achieved high-energy confinement plasma, and the average stored energy increased up to similar to 290 kJ. Moreover, due to the effect of Li vapor shielding, nearly 30% plasma heat flux was dissipated before it arrived at the Li limiter. These results promote further exploration of liquid Li solutions for the critical challenge of heat flux handling and particle control in fusion power plants.

引用

页数：6

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