Compact X-rays detectors made of 1/2′′ Ce:LaBr3 crystals of cubic shape with SiPM array readout have been developed for the FAMU experiment at RIKEN-RAL, to instrument regions of difficult access. Due to the high photon yield of Ce:LaBr3 it was possible to use a simple readout scheme based on CAEN V1730 digitizers, without a dedicated amplification stage. The drift with temperature of SiPM gain was corrected by using CAEN A7885D regulated power supply chips with temperature feedback. Energy resolutions (FWHM) around 3.5% at the 137Cs peak and around 9% at the 57Co peak were obtained.
Bonesini, M., Benocci, R., Bertoni, R., Clemenza, M., Ghittori, D., Mazza, R., et al. (2020). Ce:LaBr3 crystals with SiPM array readout and temperature control for the FAMU experiment at RAL. Intervento presentato a: 15th Topical Seminar on Innovative Particle and Radiation Detectors (IPRD19) OCT 14-17, Siena, Italy [10.1088/1748-0221/15/05/C05065].
Ce:LaBr3 crystals with SiPM array readout and temperature control for the FAMU experiment at RAL
Bonesini M.
;Benocci R.;Clemenza M.;
2020
Abstract
Compact X-rays detectors made of 1/2′′ Ce:LaBr3 crystals of cubic shape with SiPM array readout have been developed for the FAMU experiment at RIKEN-RAL, to instrument regions of difficult access. Due to the high photon yield of Ce:LaBr3 it was possible to use a simple readout scheme based on CAEN V1730 digitizers, without a dedicated amplification stage. The drift with temperature of SiPM gain was corrected by using CAEN A7885D regulated power supply chips with temperature feedback. Energy resolutions (FWHM) around 3.5% at the 137Cs peak and around 9% at the 57Co peak were obtained.
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