Performance of a monolithic LaBr3:Ce crystal coupled to an array of silicon photomultipliers
- NázevTitle
- Performance of a monolithic LaBr3:Ce crystal coupled to an array of silicon photomultipliersPerformance of a monolithic LaBr3:Ce crystal coupled to an array of silicon photomultipliers
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- A. Ulyanov, O. Morris, T. Slavíček, C. Granja, M. Solar
- DOIDOI
- 10.1016/j.nima.2015.11.148
- Časopis / citaceJournal / citation
- Nuclear Instruments and Methods in Physics Research, Section A, Accelerators, Spectrometers, Detectors and Associated Equipment. 2016, 810(810), 107-119. ISSN 0168-9002.
- RokYear
- 2016
- JazykLanguage
- eng
- WoSWoS
- 000368632900017
- ScopusScopus
- 2-s2.0-84950250904
- RIVRIV
- RIV/68407700:21670/16:00240463!RIV17-MSM-21670___
- ProjektProject
- Van de Graaff - urychlovač iontů HV2500 jako laditelný zdroj neutronů v rámci české a evropské velké infrastrukturyAccelerator of ions HV2500 as tuneable neutron source in frame of Czech and European Large Infrastructure
AbstraktAbstract
A gamma-ray detector composed of a single 28 x 28 x 20 mm(3) LaBr3:Ce crystal coupled to a custom built 4 x 4 array of silicon photomultipliers was tested over an energy range of 30 keV to 9.3 MeV. The silicon photomultipliers were initially calibrated using 20 ns light pulses generated by a light emitting diode. The photodetector responses measured as a function of the number of incident photons were found to be non-linear and consistent with model predictions. Using corrections for the non-linearity of the silicon photomultipliers, the detector showed a linear response to gamma-rays with energies from 100 keV to the maximum available energy of 9.3 MeV. The energy resolution was found to be 4% FWHM at 662 keV. Despite the large thickness of the scintillator (20 mm) and a 5 mm thick optical window, the detector was capable of measuring the positions of the gamma-ray interaction points. The position resolution was measured at 356 keV and was found to be 8 mm FVVHM in the detector plane and 11 mm FWHM for the depth of interaction. The detector can be used as a building block of a larger calorimeter system that is capable of measuring gamma-ray energies up to tens of MeV.
A gamma-ray detector composed of a single 28 x 28 x 20 mm(3) LaBr3:Ce crystal coupled to a custom built 4 x 4 array of silicon photomultipliers was tested over an energy range of 30 keV to 9.3 MeV. The silicon photomultipliers were initially calibrated using 20 ns light pulses generated by a light emitting diode. The photodetector responses measured as a function of the number of incident photons were found to be non-linear and consistent with model predictions. Using corrections for the non-linearity of the silicon photomultipliers, the detector showed a linear response to gamma-rays with energies from 100 keV to the maximum available energy of 9.3 MeV. The energy resolution was found to be 4% FWHM at 662 keV. Despite the large thickness of the scintillator (20 mm) and a 5 mm thick optical window, the detector was capable of measuring the positions of the gamma-ray interaction points. The position resolution was measured at 356 keV and was found to be 8 mm FVVHM in the detector plane and 11 mm FWHM for the depth of interaction. The detector can be used as a building block of a larger calorimeter system that is capable of measuring gamma-ray energies up to tens of MeV.