Speaker
Description
We study the temporal response of different arrays of Hamamatsu SiPMs coupled to fast scintillators. The detectors used include for instance a 36 Hamamatsu SiPM matrix (3x3mm), and a 4 Hamamatsu SiPM matrix (6x6mm), each with electronic readouts boards aiming to simplify the design. These arrays were coupled to fast scintillators, such as a LaBr3(Ce) truncated cone (1.5" high, with bases of 1" and 1.5" diameter), a cylindrical LaBr3(Ce) crystal (1" high, 1" diameter) and a 3x3x5mm cubic Lyso crystal.
A Hamamatsu PMT (model R9779, assembly: H10570, MOD 3), featuring an 8-stage photomultiplier with a bialkali photocathode and a quartz window coupled to a cylindrical LaBr3(Ce) crystal (1" high, 1" diameter) was used as a reference. The temporal response of the detectors was evaluated using Na-22 (511keV) and Co-60 radioactive sources, and the signals were digitized using a DRS4 system for more precise time-of-arrival analysis. We will continue this study in order to achieve a more complete analysis.
