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Accelerator driven Sub critical Fast Reactor (ADFR) is chosen as fissile material breeding reactor. (U Pu)Oxischosen asfuelinthe core and ThO2 asfertile materialinthe blanketzoneto breed 233U.Moltenleadis chosen as coolant because ofits better neutronic and chemicalcharacteristics over sodium .The program system usedforneutronicsstudy consists of:LAHET,forthe simulation oftheinteraction between the proton with medium energy andthe nuclei ofthe target;MCNP4A,forthe simulation ofneutrontransport with energy below 20 MeVin the sub criticalreactor;CONNECT1 ,forthe processing ofsometallies provided bythe outputof MCNP4Ain order to prepare micro cross sectionsfor elements used for burnup calculation;ORIGEN2 ,used for multi region burnup calculation;CONNECT2 ,forthe processing ofatom densities ofsome elements providedinthe outputof ORIGEN2 in orderto prepare inputto LAHETcalculationfor nexttime step.The calculated results show thatthe proposed caseisfeasible for breedingfissile materialconsideringthe criticality safety,power density,burnup,etc.
Accelerator driven Sub critical Fast Reactor (ADFR) is chosen as fissile material breeding reactor. (U Pu) Oxischosen asfuelinthe core and ThO2 asfertile materialinthe blanketzoneto breed 233U.Moltenleadis chosen as coolant because of better neutronic and chemical characteristics over sodium. The program system used forneutronics study of: LAHET, forthe simulation of the interaction between the proton with medium energy and the nuclei of the target; MCNP4A, forthe simulation ofneutron transports with energy below 20 MeVin the sub criticalreactor; CONNECT1, forthe processing ofsometallies provided by the outputof MCNP4Ain order to prepare micro cross sectionsfor elements used for Burnup calculation; ORIGEN2, used for multi-region burnup calculation; CONNECT2, forthe processing of atoms densities ofsome elements providedinthe outputof ORIGEN2 in orderto prepare inputto LAHETcalculationfor nexttime step. calculated results show thatthe proposed caseisfeasible for breedingfissi le materialconsideringthe criticality safety, power density, burnup, etc.