4.3 Article

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

Journal

JOURNAL OF PLASMA PHYSICS
Volume 86, Issue 3, Pages -

Publisher

CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0022377820000422

Keywords

plasma simulation; fusion plasma

Funding

  1. National MCF Energy R&D Program of China [2018YFE0311100, 2018YFE0303105, 2017YFE0300501, 2017YFE0301206, 2017YFE0300402, 2017YFE0301300]
  2. National Natural Science Foundation of China [11675037, 11405021, 11805231]
  3. High-level talent innovation support program of Dalian [2017RQ052]
  4. Fundamental Research Funds for the Central Universities [DUT18LK03]
  5. CASHIPS Director's Fund [YZJJ201612]
  6. ASIPP Science foundation [DSJJ-17-03]
  7. Anhui Provincial Natural Science Foundation [1808085QA14]

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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.

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