Efficiencies of the ion cyclotron range of frequency minority heating in the compact helical system and large helical device plasmas

Ion cyclotron range of frequency minority heating was investigated in plasmas of the compact helical system (CHS) and the large helical device (LHD) by means of the orbit following Monte Carlo simulation. It was found that the heating efficiency decreases with an increase in absorption power by minority ions and depends strongly on the magnetic field strength and the field configuration.