Subjects: Physics >> Nuclear Physics submitted time 2024-03-27
Abstract： Background: The propagation and power deposition process of ion cyclotron waves in plasma is the key to ICRH.
Purpose: The purpose of this study is to evaluate the effect of single absorption assumption and non-single absorption assumption on ion cyclotron wave coupling and heating in the EAST.
Methods: Under different antenna current phases, the simulation results of the EAST 3D full vacuum chamber ICRH program and the 1/4 vacuum chamber ICRH program were compared.
Results: When the antenna current phase is (0 π 0 π), there is a significant difference between the simulation results of the two models.
Conclusion: The ion cyclotron wave propagating multiple times in the toroidal direction is the main reason for the difference in results. For fusion devices, the applicability of the single absorption assumption needs further systematic research.
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