New World of Torus Plasmas due to the Varieties of Plasma Current Profiles -Evolution of Equilibrium and Transport Researches- 2.Variations of Current Profiles in Tokamaks 2.1 Steady State Sustainment and Confinement Properties of Reversed Magnetic Shear Configuration

Abstract

The status of transport simulation in reversed magnetic shear configuration of tokamaks is described. Based on the turbulent transport model of the current diffusive ballooning mode,the formation of internal transport barrier and the sustainment of reversed shear configuration is examined. The issues in developing the steady state sustainment scenarios are also discussed.