Study of Scrape-Off-Layer Width in Ohmic and Lower Hybrid Wave Heated Double-Null Divertor Plasma in EAST

Edge profiles in Ohmic and lower hybrid （LH） wave heated discharges in EAST are presented. A comparison of the measured profiles is made with those from the theoretical prediction for the scrape-off-layer （SOL） width. The edge plasma parameters are diagnosed by a triple probe divertor diagnostic sys...

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Published in:Plasma science & technology 2011-08, Vol.13 (4), p.435-439
Main Author: 王亮 徐国盛 常加峰 张炜 颜宁 丁斯晔 刘少承 明廷凤 汪惠乾 刘鹏 蒋敏 熊豪 万宝年 高翔 郭后扬 胡立群 吴振伟 朱思铮 罗广南
Format: Article
Language:English
Subjects:
偏滤器
关闭
国际热核实验堆
宽度
波加热
混杂
电阻
等离子体参数
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Summary:Edge profiles in Ohmic and lower hybrid （LH） wave heated discharges in EAST are presented. A comparison of the measured profiles is made with those from the theoretical prediction for the scrape-off-layer （SOL） width. The edge plasma parameters are diagnosed by a triple probe divertor diagnostic system and fast reciprocating probes at the outer mid-plane. The experimental results show that the SOL width of double-null （DN） divertor plasmas in EAST appears to exhibit a negative dependence on the power crossing the separatrix, which is consistent with the collisional SOL scalings of JET and Alcator C-Mod. This will provide useful information for extrapolation to the ITER SOL width scaling for power deposition.
ISSN:1009-0630
DOI:10.1088/1009-0630/13/4/10