Formation mechanism of toroidal rotation profile and characteristics of momentum transport in JT-60U

Yoshida, Maiko; Kamada, Yutaka; Takenaga, Hidenobu; Sakamoto, Yoshiteru; Ide, Shunsuke; Oyama, Naoyuki; Urano, Hajime; Kobayashi, Takayuki

The toroidal momentum diffusivity and the convection velocity of the momentum transport and the intrinsic rotation have been evaluated separately in the H-mode plasmas using the original transient momentum transport analysis. The momentum diffusivity increases with increasing the heat diffusivity over a wide range of radii. The ratio of the momentum and heat diffusivities increases with increasing the ion temperature. The inward convection velocity increases with increasing the momentum diffusivity. We have also found that the intrinsic rotation with NBI increases with increasing ion pressure gradient and its direction is always the CTR direction. We have found that ECH drives the CO-intrinsic rotation inside the EC deposition and drives the CTR-intrinsic rotation outside the EC deposition. The CTR-rotation starts from the EC deposition location and the phase delay of the CTR-rotation is observed in the radial direction.