Session GP1 - Poster Session IV.
POSTER session, Tuesday afternoon, October 30
Exhibit Hall B,
Favorable energy confinement property has been obtained in JT-60U plasmas with ITBs (Internal Transport Barriers). In the ITB region, not only the temperature and the density profiles, but also the plasma rotation profile drastically changes. Especially in the ``box'' type ITB, the toroidal rotation profile of impurity shows ``notched'' feature. It is regarded that the profiles of temperature and density have relation with the profile of plasma rotation and the trial of the pressure gradient control at ITB has been given by the control of plasma rotation in JT-60U. However, the relation between the momentum transport and the heat transport has not been fully clarified in a wide range of plasma parameters. In this study, the momentum transport coefficient of bulk plasma is calculated by the rotation velocity of deuterium, which is estimated by using the measured impurity rotation velocity and the momentum balance equation parallel to the magnetic field. By comparing the momentum transport coefficient with the heat transport coefficient, the relation between the momentum transport and the heat transport is clarified in the L-mode plasmas, the hot ion mode plasmas and the reversed shear plasmas.