Divertor modelling for conceptual studies of tokamak fusion reactor FDS-III

摘要

Divertor modelling for the conceptual studies of tokamak fusion reactor FDS-III was carried out by using the edge plasma code package B2.5-Eirene (SOLPS5.0). The modelling was performed by taking real MHD equilibrium and divertor geometry of the reactor into account. The profiles of plasma temperature, density and heat fluxes in the computational region and at the target plates have been obtained. The modelling results show that, with the fusion power P_fu = 2.6 GW and the edge density N_(edgs) = 6.0 x 10~(19)1/m~3, the peak values of electron and ion heat fluxes at the outer target plate of divertor are respectively 93.92 MW/m~2 and 58.50 MW/m~2. According to the modelling results it is suggested that some methods for reducing the heat fluxes at the target plates should be used in order to get acceptable level of power flux at the target plates for the divertor design of the reactor.