Modeling accelerator-based neutron measurements

Comparisons are shown between transport model calculations and secondary-neutron cross sections from 400 MeV/nucleon Kr + Pb interactions. Variations are made in the input files used for the calculations in order to take into account corrections applied to the data for background, flux attenuation, and other effects inherent with neutron measurements at accelerator facilities. Results show that the calculations are very sensitive to a number of input parameters that have an effect on the overall shape and magnitude of the calculated spectra, which in turn have a significant effect on the degree of agreement between data and code. Recommendations are made regarding what input data to select for model calculations, based on these results1 2.