Evaluation of Absorption Rate by Using Full-Wave Maxwell Simulation for Plug ECRH in the GAMMA 10 Tandem Mirror

Abstract

The absorption rate of heat microwave power for plug ECRH (electron cyclotron resonance heating) in the GAMMA 10 tandem mirror is calculated in three ways over a wide range of plasma density. These methods include ray-tracing calculation, analytic estimation and full-wave Maxwell simulation. The results correlate very closely with each other. The full-wave Maxwell simulation is found to be a powerful method to evaluate the microwave power deposition for ECRH. It also predicts the power deposition in the region of ω_c < ω for beach heating.