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

Pengfei ZHANG (张鹏飞); Ling ZHANG (张凌); Zhenwei WU (吴振伟); Zong XU (许棕); Wei GAO (高伟); Liang WANG (王亮); Qingquan YANG (杨清泉); Jichan XU (许吉禅); Jianbin LIU (刘建斌); Hao QU (屈浩); Yong LIU (刘永); Juan HUANG (黄娟); Chengrui WU (吴成瑞); Yumei HOU (侯玉梅); Zhao JIN (金钊); J D ELDER; Houyang GUO (郭后扬)

doi:10.1088/2058-6272/aaa7e8

Plasma Science and Technology > 2018 > 20(4): 45104-045104. > DOI: 10.1088/2058-6272/aaa7e8

Pengfei ZHANG (张鹏飞), Ling ZHANG (张凌), Zhenwei WU (吴振伟), Zong XU (许棕), Wei GAO (高伟), Liang WANG (王亮), Qingquan YANG (杨清泉), Jichan XU (许吉禅), Jianbin LIU (刘建斌), Hao QU (屈浩), Yong LIU (刘永), Juan HUANG (黄娟), Chengrui WU (吴成瑞), Yumei HOU (侯玉梅), Zhao JIN (金钊), J D ELDER, Houyang GUO (郭后扬). OEDGE modeling of plasma contamination efficiency of Ar puffing from different divertor locations in EAST[J]. Plasma Science and Technology, 2018, 20(4): 45104-045104. DOI: 10.1088/2058-6272/aaa7e8

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

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 Republic 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

Funds: This work was 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 2015SRG?HSC008, Magnetic Confinement Innovation Team Plan of Chinese Academy of Sciences, as well as the Thousand Talent Plan of China.

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Received Date: August 15, 2017

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Abstract

Abstract

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.
- divertor,
- Ar puffing,
- impurity transport,
- OEDGE,
- EAST

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References (20)

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