EMC3-EIRENE modelling of the toroidally asymmetric heat flux distribution with neon impurity injection on EAST

B. Liu; S.Y. Dai; G. Kawamura; L. Zhang; Z.S. Yang; Y. Feng; D.Z. Wang

Nuclear Materials and Energy (Mar 2021)

EMC3-EIRENE modelling of the toroidally asymmetric heat flux distribution with neon impurity injection on EAST

B. Liu,
S.Y. Dai,
G. Kawamura,
L. Zhang,
Z.S. Yang,
Y. Feng,
D.Z. Wang

Affiliations

B. Liu: Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology, Dalian 116024, China
S.Y. Dai: Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology, Dalian 116024, China; DUT-BSU Joint Insititute, Dalian University of Technology, Dalian 116024, China; Corresponding author.
G. Kawamura: National Institute for Fusion Science, National Institutes of Natural Sciences, Toki 509-5292, Japan; Department of Fusion Science, the Graduate University for Advanced Studies SOKENDAI, Toki 509-5292, Japan
L. Zhang: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China
Z.S. Yang: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China
Y. Feng: Max-Planck-Institut für Plasmaphysik, D-17491 Greifswald, Germany
D.Z. Wang: Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology, Dalian 116024, China

Journal volume & issue: Vol. 26
p. 100844

Abstract

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The heat flux deposition on the divertor targets with neon impurity injection has been investigated for EAST tokamak with the help of three-dimensional (3D) edge transport code EMC3-EIRENE. The parameter studies of the upstream electron density, neon impurity injection flux and injected neon atom energy have been conducted to check their impacts on the extent of the toroidal asymmetry of heat load distributions. It is found that high upstream electron density leads to an effective mitigation of heat flux deposition and more significant toroidal asymmetry of heat load distribution. Further, the toroidal asymmetry of heat load distribution increases with neon impurity injection flux. However, a weak dependence of heat load distribution on the neon impurity injection energy is obtained.

Published in Nuclear Materials and Energy

ISSN: 2352-1791 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Nuclear engineering. Atomic power
Website: http://www.journals.elsevier.com/nuclear-materials-and-energy/

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