Tokamak fusion neutron source requirements for nuclear applications

A series of conceptual design studies has established that the tokamak D-T fusion neutron source needed to drive a sub-critical, fast-spectrum nuclear reactor for the transmutation of spent nuclear fuel 1) could be designed on the ITER physics and technology databases, 2) could be constructed on the basis of ITER operation as a prototype, and 3) would be less demanding than a DEMO or commercial fusion reactor. The nominal tokamak parameters are (R < 4 m, βN < 2, H(y,2)=1, Qp < 3, Pfusion < 200 MW, I = 7- MA, γcd = 0.6, B < 6 T). The sub-critical nuclear reactor designs are based on concepts and technologies being developed in the GEN-IV studies to insure realism. (author)