Kinetic Transport Simulation in Toroidal Plasmas

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1. Kinetic transport equation was formulated in an axisymmetric geometry. Starting from the gyrokinetic equation we have derived the neoclassical transport operators by bounce averaging the Coulomb collision operators.2. Three-dimensional Fokker-Planck code, TASK/FP, was extended to describe the velocity distribution Sanctions of multi-species in a plasma. Relativistic and energy-conserving nonlinear Coulomb operators were implemented into the TASK/FP.code and numerical performance was considerably improved by parallel processing for velocity distributions on each magnetic surface.3. The integrated tokamak modeling, code TASK including the extended Fokker Planck module TASK/FP was used in systematic comparison of turbulent transport models fix takamak plasmas and evaluation of newly-developed dynamic transport module TASK/TX.4. Formulation of kinetic transport equation for non-axisymmetric geometry was discussed by evaluating the neoclassical transport operator in phase space.5. Kinetic analyses of peripheral plasmas were carried out based on the gyrokinetic theory. A new algorithm appropriate for plasmas with strong flow shear was developed and agreement with the results of full particle simulation was confirmed. The formation of sheath potential in magnetized plasmas and the distribution of incident angle and energy of the particles striking a wall were examined.