MVP: A General-purpose Monte Carlo code for continuous-energy neutron and photon transport calculations, 3

Nagaya, Yasunobu  ; Okumura, Keisuke ; Mori, Takamasa

A general-purpose Monte Carlo code MVP has been developed for continuous-energy neutron and photon transport calculations since the late 1980s at Japan Atomic Energy Agency. The MVP code is designed for nuclear reactor applications such as reactor core design/analysis, criticality safety and reactor shielding. The code has been widely in domestic use since the first release in 1994 and the second release in 2005. Modifications and enhancements have been made with advanced Monte Carlo methodology for reactor physics applications. Featured capabilities for version 3 are the perturbation calculation for the k-effective value, treatment of delayed neutrons, group constant generation, exact resonance elastic scattering model, reactor kinetics parameter calculation. These capabilities are integrated into the code and MVP version 3 is planned to be domestically released in near future.