Characteristics of momentum transport in JT-60U H-mode plasmas

Yoshida, Maiko; Kamada, Yutaka; Takenaga, Hidenobu; Sakamoto, Yoshiteru; Oyama, Naoyuki; Urano, Hajime; JT-60 Team

Properties of the toroidal momentum diffusivity and the convection velocity in JT-60U H-mode plasmas have been obtained by plasma parameter scans such as the plasma current, neutral beam heating power and electron density. The toroidal momentum diffusivity increases with increasing heat diffusivity over a wide range of radii. The inward convection velocity increases with increasing the momentum diffusivity. It is found that the ratio increases with increasing ion temperature and decreases with increasing electron density.