Response function and linearity for high energy γ-rays in large volume LaBr3:Ce detectors

• DOI: 10.1016/j.nima.2017.10.018
• Publication Date: 2017-10-16T06:01:45Z
• Authors: G. Gosta; N. Blasi; F. Camera; B. Million; A. Giaz; O. Wieland; F.M. Rossi; H. Utsunomiya; T. Ari-izumi; D. Takenaka; D. Filipescu; I. Gheorghe
• Keywords: 0103 physical sciences; High energy gamma rays; LaBr; 3; :Ce detectors; Linearity; NewSUBARU; 01 natural sciences; High energy gamma rays; LaBr3:Ce detectors; Linearity; NewSUBARU; Nuclear and High Energy Physics; Instrumentation

The response function to high energy γ γ -rays of two large volume LaBr 3 :Ce crystals (3.5”x8”) and the linearity of the coupled PMT’s were investigated at the NewSUBARU facility, where γ γ -rays in the energy range 6 –38 MeV were produced and sent into the detectors. Monte Carlo simulations were performed to reproduce the experimental spectra. The photopeak and interaction efficiencies were also evaluated both in case of a collimated beam or an isotropic source.