Dynamic Characteristics of Accelerator-Driven Subcritical Reactor With Self-Adapting Multi-Mode Core Few-Group Constants

In this study, the dynamic characteristics of accelerator-driven subcritical reactor (ADSR) under beam transients with high heterogeneity neutron flux in time-space are investigated. Multi-mode core few-group constants generated by three kinds fluxes: steady state ADSR, λ-eigenvalue fundamental wave, and α-eigenvalue wave. The proposed overcome limitation single constant two-step method that cannot consider variation density energy spectrum time space. Compared to existing different operating conditions, self-adapting multi-mode exhibit higher accuracy case following two modes: steady-state mode ADSR starting process trip condition. Overall, research provides useful insights on kinetics can boost development ADSRs.