Calculation of Energetic Ion Tail from Ion Cyclotron Resonance Frequency Heating

The second harmonic frequency of hydrogen ion cyclotron resonance heating experiment on HT-6M tokamak was studied by adding the quasi-linear wave-ion interaction term in the two-dimensional (velocity space), time-dependent, nonlinear and multispecies Fokker-Planck equation. The temporal evolution of ion distribution function and relevant parameters were calculated and compared with experiment data. The calculation shows that the ion temperature increases, high-energy ion tail (above5 keV) and anisotropy appear when the wave is injected to plasma. The simulations are in reasonable agreement with experiment data.