Properties of avalanches and momentum transport in driven ITG turbulence

Idomura, Yasuhiro   ; Jolliet, S.

Rotation scan numerical experiments are performed in first principle tokamak micro-turbulence simulations of driven ion temperature gradient turbulence. It is seen that radial electric fields change depending on plasma rotation profiles through a momentum balance relation. Influences of the radial electric field shear on avalanche-like ion heat transport are estimated, and it is found that plasma rotation profiles with weak radial electric field shear lead to higher heat transport. From the momentum transport analyses with different rotation profiles, the momentum diffusion, the momentum pinch, and the residual stress are evaluated.