Characterization of the background in epithermal neutron scattering measurements at pulsed neutron sources

This paper reports the characterization of the different components of the γ background in epithermal neutron scattering experiments at pulsed neutron sources. The measurements were performed on the VESUVIO spectrometer at ISIS spallation neutron source. These measurements, carried out with a high purity germanium detector, aim to provide detailed information for the investigation of the effect of the γ energy discrimination on the signal-to-background ratio. shown that the γ background is produced by different sources that can be identified with their relative time structure and relative weight.