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Impacts of resonant magnetic perturbations on edge carbon transport and emission on EAST with EMC3-EIRENE modelling

Published online by Cambridge University Press:  15 May 2020

S. Y. Dai*
Affiliation:
Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology, Dalian116024, PR China DUT-BSU Joint Insititute, Dalian University of Technology, Dalian116024, PR China
H. M. Zhang
Affiliation:
Institute of Plasma Physics, Chinese Academy of Sciences, Hefei230031, PR China
B. Lyu*
Affiliation:
Institute of Plasma Physics, Chinese Academy of Sciences, Hefei230031, PR China
L. Wang
Affiliation:
Institute of Plasma Physics, Chinese Academy of Sciences, Hefei230031, PR China
Y. Feng
Affiliation:
Max-Planck-Institute für Plasmaphysik, D-17491Greifswald, Germany
Z. X. Wang
Affiliation:
Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology, Dalian116024, PR China
D. Z. Wang
Affiliation:
Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology, Dalian116024, PR China
*
Email addresses for correspondence: daishuyu@dlut.edu.cn, blu@ipp.ac.cn
Email addresses for correspondence: daishuyu@dlut.edu.cn, blu@ipp.ac.cn

Abstract

The modelling of edge carbon transport and emission on EAST tokamak under resonant magnetic perturbation (RMP) fields has been conducted with the three-dimensional edge transport code EMC3-EIRENE. The measured vertical distribution of CVI emission by the extreme ultraviolet spectrometer system for the perturbed case shows a reduction in the CVI emission by 20 % compared to the equilibrium case. The chord-integrated CVI emission can be reconstructed by EMC3-EIRENE modelling, which presents an increase in the CVI emission with RMP fields. The discrepancy between experiments and simulations has been investigated by parameter study to examine the sensitivity of the simulation results on the edge plasma conditions and the impurity perpendicular transport. It is found that the variation of edge plasma conditions for the equilibrium case cannot resolve the discrepancy in the CVI emission between simulations and measurements. The simulations with enhanced impurity perpendicular transport coefficient allows a reasonable agreement with the measured reduction of CVI emission.

Type
Research Article
Copyright
© The Author(s), 2020. Published by Cambridge University Press

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