Effect of divertor geometry on plasma detachment in DIII-D

Abstract

UEDGE simulation of the radiative divertor plasma (RDP) (nearly closed divertor) in DIII-D indicates a 40% reduction in the core density necessary for fully detached pure deuterium plasmas at 3 MW core power. Including intrinsic carbon impurities to the UEDGE model expands the region for fully detached plasmas and further reduces the necessary core density for this state.