Application of FLUKA and OpenMC in coupled physics calculation of target and subcritical r

Application of FLUKA and OpenMC in coupled physics calculation of target and subcritical reactor

for ADS

Ze-Long Zhao1,2·Yong-Wei Yang1,2·Shuang Hong1,3

【摘 要】Abstract The study of accelerator-driven subcritical reactor systems(ADSs)has been an important research topic in the field of nuclear energy for years.The main code applied in ADS research is MCNPX,which

was

developed

by

Los

Alamos

National

Laboratory.Westudied the application of the open-source Monte Carlo codes FLUKA and OpenMC to a coupled ADScalculation.The FLUKA code was used to simulate the reaction of highenergy protonswith thenucleusof thetarget material in the ADS,which produces spallation neutrons.Information on the spallation neutrons,such as their energy,position,direction,and weight,can be recorded by a user-defined routine called FLUSCW provided by FLUKA.Then,the information was stored in an external neutron source fi le in HDF5 format by using a conversion code,as required by the OpenMC calculation.Finally,the fixed-source calculation function of OpenMC was applied to simulate the transport of spallation neutrons and obtain the distribution of the neutron flux in the core region.In the coupled calculation,the high-energy cross-section library JENDL4.0/HE in ACEformat produced by NJOY2016 was applied in the OpenMC transport simulation.The OECD–