Kinetic Integrated Modeling of Heating and Current Drive in Tokamak Plasmas

Full text: In order to self-consistently describe heating and current drive and various influences of energetic particles in tokamak plasmas, we have been developing a kinetic integrated modeling code TASK3G. This modeling is based on the behavior of the momentum distribution function of each particle species. The time evolution of the momentum distribution function is described by a newly-extended Fokker-Planck component TASK/FP and the influence of energetic particles on global stability is studied by a full wave component TASK/WM. Self-consistent analysis of multi-scheme heating in a ITER plasma is demonstrated for the first time including radial transport and fusion reaction rate calculated from the momentum distribution functions. We have introduced several kinds of turbulent diffusion coefficient and inward pinch; with and without energy dependence, fixed radial profile, and turbulent transport models used in transport simulations. The simulation results are compared with experimentally observed radial profiles of temperature and energetic particles. The full wave analysis including the effects of energetic particles has indicated their influence on the power deposition profiles in ICRF heating. The effects of energetic particles on the linear stability of Alfven eigenmodes and low-frequency global eigenmodes are also studied. (author)