Cross-section sensitivity analyses of 14 MeV Neutron Benchmark Experiment on Tungsten

Abstract The 14 MeV Neutron Experiment on Tungsten carried out at the Frascati Neutron Generator (FNG) in 2002 was analysed using deterministic computational tools, with a stress on the cross-section sensitivity analysis. The DORT discrete ordinates (S N ) with FENDL-2 and JENDL-3.3 cross-section data, and the SUSD3D sensitivity and uncertainty computer codes were used in the analysis. The sensitivity profiles of various reaction rates measured at four positions up to 35 cm in the block of tungsten, and covering thermal to fast neutron energy range, with respect to all the partial as well as the total cross-sections of tungsten were calculated using the SUSD3D code. Combined with the comparison of the calculated and the measured reaction rates, the cross-section sensitivity profiles indicate areas where further evaluation work is needed. The results were compared with those obtained from the OKTAVIAN Tungsten Experiment and FNS Clean Experiment on the Tungsten Cylindrical Assembly.