First measurement of the VESUVIO neutron spectrum in the 30–80 MeV energy range using a Proton Recoil Telescope technique

Abstract

Measurements of the fast neutron energy spectrum at theISIS spallation source are reported. The measurements were performed with aProton Recoil Telescope consisting of a thin plastic foil placed in theneutron beam and two scintillator detectors. Results in the neutron energyrange 30 MeV < En < 80 MeV are in good agreement withMonte Carlo simulations of the neutron spectrum.