OEDGE modeling of plasma contamination efficiency of Ar puffing from different divertor locations in EAST  

作　　者：张鹏飞 张凌 吴振伟 许棕 高伟 王亮 杨清泉 许吉禅 刘建斌 屈浩 刘永 黄娟 吴成瑞 侯玉梅 金钊 J D ELDER 郭后扬 

机构地区：[1]Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China [2]University of Science and Technology of China, Hefei 230026, People's Repuiglic of China [3]University of Toronto Institute for Aerospace Studies, Toronto M3H5T6, Canada [4]General Atomics, PO Box 85608, San Diego, CA 92186, United States of America

出　　处：《Plasma Science and Technology》2018年第4期121-126,共6页等离子体科学和技术（英文版）

基　　金：supported by the National Magnetic Confinement Fusion Science Program of China under Contract Nos. 2013GB107003, 2014GB124006, 2015GB101000;National Natural Science Foundation of China under Grant Nos. 11275231, 11422546, 11575236, 11575244 and 11405213;Scientific Research Grant of Hefei Science Center of CAS under contract 2015SRG-HSC001 and 2015SRGHSC008;Magnetic Confinement Innovation Team Plan of Chinese Academy of Sciences;the Thousand Talent Plan of China

摘　　要：Modeling with OEDGE was carried out to assess the initial and long-term plasma contamination efficiency of Ar puffing from different divertor locations, i.e. the inner divertor, the outer divertor and the dome, in the EAST superconducting tokamak for typical ohmic plasma conditions. It was found that the initial Ar contamination efficiency is dependent on the local plasma conditions at the different gas puff locations. However, it quickly approaches a similar steady state value for Ar recycling efficiency >0.9. OEDGE modeling shows that the final equilibrium Ar contamination efficiency is significantly lower for the more closed lower divertor than that for the upper divertor.Modeling with OEDGE was carried out to assess the initial and long-term plasma contamination efficiency of Ar puffing from different divertor locations, i.e. the inner divertor, the outer divertor and the dome, in the EAST superconducting tokamak for typical ohmic plasma conditions. It was found that the initial Ar contamination efficiency is dependent on the local plasma conditions at the different gas puff locations. However, it quickly approaches a similar steady state value for Ar recycling efficiency >0.9. OEDGE modeling shows that the final equilibrium Ar contamination efficiency is significantly lower for the more closed lower divertor than that for the upper divertor.

关 键 词：DIVERTOR Ar puffing impurity transport OEDGE EAST 

分 类 号：TL631.24[核科学技术—核技术及应用]