Abstract
AbstractTwo global simulation codes, TASK/WM (a full wave solver) and GNET (a 5‐D drift kinetic equation solver), are combined to simulate the ICRF heating in the 3D magnetic configuration. The combined code is applied to the ICRF minority heating in the LHD configuration. An optimization of the ICRF heating is considered in changing the magnetic configurations and the resonance surfaces in the LHD plasmas using GNET code. It is found that the heating efficiency is improved about 30% with the heating power of 10MW in the optimized heating scenario from that of the present standard off‐axis heating scenario. Also the ICRF minority heating is studied in the HSX plasma and it is found that the ICRF heating of about 100kW is still effective to heat the plasma even ϱ /a ∼ 1/7.5 for tail ions (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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