Comparison of evaluation and experiment for nuclear cascade induced by 650 MeV protons in thick lead target of a subcritical assembly

The evaluations of nuclear cascade generated within a thick lead target irradiated with the 650 MeV proton beam are described. The experiments have been performed at the proton accelerator of the Joint Institute for Nuclear Research within the framework of the project SAD (MOX fuelled Subcritical Assembly in Dubna). The calculated (with different codes) neutron spectra in a wide energy range as well as the angular and spatial distributions of secondary hadrons from the target are verified by the respective measurements, The agreement between the calculated and experimental data proved quite satisfactorily