Reactivity Measurements in the Subcritical Booster Assembly Yalina Driven by Neutron Generator.

Abstract

Accelerator Driven Systems (ADS) are considered as promising systems to produce energy and to decrease the volumes and radiotoxicity of long-lived fission products (137Cs, 90Sr, 129I, 126Sn... ) and minor actinides (Np, Pu, Am, Cu) originating from nuclear fuel cycle. One of the main problems to be solved for ensuring safe operation of ADS is on-line monitoring of subcriticality level. In this paper a short description of the research facility YALINA is presented. The results of experimental and theoretical study of subcriticality level at YALINA-Booster assembly with highly enriched uranium fuel performed in the frame of ISTC Projects B1341 and B1732 are briefly discussed.