Feasibility study of a volumetric neutron source based on a superconducting tokamak device

摘要

We design a volumetric neutron source based on a steady-state tokamak device with superconducting coils. It is found that the neutron flux of 1 MW/m/sup 2/ is available in the medium-sized device (R=4.5 m, a=1.0 m, /spl kappa/=1.8 and I/sub p/=5.6 MA) under the conditions of H=2 and /spl beta//sub N/=3 with a NBI power of 60 MW. We demonstrate the controllability of the current profiles required for high beta plasma up to /spl beta//sub N/=3 with the combination of the bootstrap current and NB-driven current. The Li-Pb blanket is adopted with water-cooled and austenitic stainless steel-structured system. The calculated local TBR reaches 1.4 or more in Li-Pb breeder at a sufficient thickness of breeding zone. The net TBR might be available only with the outboard Li-Pb blanket.