First-principle based gyrokinetic turbulent transport simulation with realistic tokamak equilibrium towards ITER and DEMO

Nakata, Motoki; Honda, Mitsuru; Yoshida, Maiko; Urano, Hajime; Maeyama, Shinya; Nunami, Masanori*; Watanabe, Tomohiko*

First-principle based gyrokinetic simulation is a powerful method for investigating turbulent transport in magnetically confined fusion plasmas, and the quantitative evaluations of the prediction capability through comparisons with existing experiments and the model improvement are important issues. In this study, a local gyrokinetic turbulence code GKV-J is extended to incorporate realistic tokamak equilibria to realize the first principle based turbulent transport simulations on JT-60U tokamak. In addition to clarifications of the micro-stability properties depending on the radial locations, the turbulence simulation results successfully reproduce the experimental results on ion and electron heat diffusivity in the core region, where the conventional fluid-type reduced transport model shows some deviations. Also, the impact of shaping on turbulent transport properties is identified for JT-60SA tokamak.