Two-Dimensional Analysis on Limiter/Divertor Transition in Scrape-off Layer Plasmas

摘要

Numerical study on the scrape-off layer and divertor plasmas is made by using the global and two-dimensional code. Structure of the SOL and divertor plasma in the Doublet-III open-divertor configuration is discussed. The distance between the plasma surface and limiter is changed, and the interaction of the plasma with limiter as well as the effect of neutrals on the main plasma are discussed. The minimum clearance of the limiter to get rid of the interaction is also obtained. The scalings of the edge temperature and the e-folding length of the SOL plasma on the power are obtained. (ERA citation 14:014034)