SOLPS modeling of lithium transport in the scrape-off layer during real-time lithium injection on EAST

被引：41
|
作者：
Sang, Chaofeng [1 ]
Du, Hailong [1 ]
Zuo, Guizhong [2 ]
Bonnin, Xavier [3 ]
Sun, Jizhong [1 ]
Wang, Liang [2 ]
Wang, Dezhen [1 ]
机构：
[1] Dalian Univ Technol, Sch Phys & Optoelect Technol, Dalian 116024, Peoples R China
[2] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
[3] ITER Org, Route Vinon Sur Verdon, F-13067 St Paul Les Durance, France
来源：
NUCLEAR FUSION | 2016年 / 56卷 / 10期
基金：
中国国家自然科学基金;
关键词：
SOLPS modeling; lithium injection; divertor; edge plasma; DIVERTOR; HT-7;
D O I：
10.1088/0029-5515/56/10/106018
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
Edge fluid-plasma/kinetic-neutral SOLPS [1, 2] modeling of lithium (Li) transport and its effect on the edge plasma during real-time Li injection H-mode discharge on the EAST tokamak are analysed in this work. Since Li has strong chemical activity, deuterium (D) recycling is suppressed by a Li coated plasma-facing wall. By comparing the simulated edge plasma parameters between the no Li case and the Li injection case, it is found that both of the D atom and molecule densities in the divertor region are reduced with the Li injection. It is also found that most of the radiated power is radiated in the divertor. The simulation provides and analyzes the distributions of each Li ion charge state, and the evolution of Li impurity distribution. The simulation shows that the Li+ prefers to accumulate on the high-field side than on the low-field side, which is in qualitative agreement with the experimental measurements on EAST. The possible reason for the Li+ preferential accumulation is discussed in this study.
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页数：14
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