Abstract
The electron cyclotron wave current start-up in tokamaks has been simulated using Monte-Carlo method in two-dimensional configuration space ( x , y ) and two-dimensional velocity space ( V ∥ , V ⊥ ). The simulation results of the relationship between start-up current and external vertical magnetic field is consistent with experiments, and the simulation results coincides the physical analyses that the start-up current is obtained by canceling the toroidal drift in one toroidal direction by external vertical magnetic field for energetic electrons in low density plasmas.
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