Numerical analyses of cold and dense divertor plasmas realized in Doublet III poloidal divertor experiments and their application to a near-term tokamak reactor

Abstract The cold and dense divertor plasmas observed in the Doublet III experiments are numerically reproduced based on a self-consistent modelling of the divertor plasma and neutral particles. Especially it is found that the electron density near the divertor plate is proportional to the 3rd power of the electron density at the divertor throat, which is in good conformity to the experimentally observed scaling law. The numerical simulation using the same divertor modelling strongly indicates the possibility of the cold and dense divertor operation for the near-term tokamak reactor.