Influence on water cooled breeder blanket neutronics simulation with different fusion nuclear data libraries

Water Cooled Breeder Blanket is one of the breeder blanket candidates for China Fusion Engineering Test Reactor (CFETR), and the neutron transport simulation of blanket module is significant for the blanket design. The selection of fusion nuclear data libraries impacts on the simulation results. The simple Li sphere model is built based on the experimental facility of tritium production about Li sphere shell constructed by JAERI, and the 1d sphere model of blanket is built referring to Java water cooled blanket design using the neutron transport Monte Carlo code MCNP. The neutronics simulations are carried out with FENDL 2.1 , FENDL 3.0 and JEFF 3.2 to obtain tritium breeding ration (TBR), which is compared with experimental results and design parameters respectively. The results shows that the FENDL 3.0 or JEFF 3.2 is the selected data libraries for 3D neutronics simulation of blanket module. (authors)