Integrated analysis of plasmas rotation effect on HL-3 hybrid scenario

Abstract

Abstract The hybrid scenario, which has good confinement and moderate MHD instabilities, is a proposed operation scenario for ITER. In this work, the effect of plasma rotation on the HL-3 hybrid scenario is analyzed with the integrated modeling framework OMFIT. The results show that toroidal rotation has no obvious effect on confinement with a high line averaged density of n bar~7×1019m-3. In this case, the ion temperature only changes from 4.7 keV to 4.4 keV with the rotation decreasing from 105 rad/s to 103 rad/s, which means that the turbulent heat transport is not dominant. While in scenarios characterized by lower densities, such as n bar~4×1019m-3, turbulent transport becomes dominant in determining heat transport. The ion temperature grows from 3.8 keV to 6.1 keV in the core as the rotation increases from 103 rad/s to 105 rad/s. Despite the rise in ion temperature, the effects of rotation on both electron temperature and density are not obvious. Additionally, it is noteworthy that the variation in rotation does not significantly affect the global confinement of plasma in both scenarios with low and high density.