COUPLED FAST-THERMAL POWER BREEDER CRITICAL EXPERIMENT

Abstract

A coupled fast-thermal reactor experiment was performed on tbe Argonoe National Laboratory Fast Critical Facility (ZPR-III). These experiments were on a 50-liter core mockup of a power breeder system and concere the critical loading, power distribution, neutron lifetime, subcriticality without thermal fissions, danger coefficients important for a hazards evaluation of the system, and the effectiveness of various control methods. The major advantage over the all-fast system consists of a substantially longer prompt neuiron lifetime which is achieved with only a small reduction in breeding ratio. (M.H.R.)