Investigation on the properties of customized fast-timing LaBr3(Ce) Detector

Abstract: We have developed a LaBr3(Ce) detector based on a customized 𝜙2″ ×2″ LaBr3(Ce) crystal coupled with the Hamamatsu R13089 photomultiplier. We determined the energy resolution and intrinsic detection efficiency of our detector to be 3.6% and 17.6% for the 662 keV 𝛾-ray, respectively. The time resolution of our detector was found to be 270 (22) ps using the cascade 1173-1332 keV 𝛾-rays from 60Co source. Furthermore, we evaluated the average activity of intrinsic radiation from our detector to be 4824 (69) Counts/h/cm3. The performance of the Saint-Gobain B380 and B390 detectors are also presented in this paper for reference.