Author/Authors :
Iwanowska، نويسنده , , Joanna and Swiderski، نويسنده , , Lukasz and Szczesniak، نويسنده , , Tomasz and Sibczynski، نويسنده , , Pawel and Moszynski، نويسنده , , Marek and Grodzicka، نويسنده , , Martyna and Kamada، نويسنده , , Kei and Tsutsumi، نويسنده , , Kousuke and Usuki، نويسنده , , Yoshiyuki and Yanagida، نويسنده , , Takayuki and Yoshikawa، نويسنده , , Akira، نويسنده ,
Abstract :
Performance of cerium-doped Gd3Al2Ga3O12 (GAGG:Ce) scintillator in gamma-ray spectrometry has been investigated. The measurements of two samples of GAGG:Ce cover the tests of emission spectra (maximum of emission at about 530 nm), light output, non-proportionality, energy resolution, time resolution and decay time of light pulses. We compare the results with commonly known scintillators, such as NaI(Tl), LSO, LuAG etc. The results show that GAGG:Ce has a high light yield of about 33000 ph/MeV as measured with Hamamatsu S3590–18 Si PiN photodiode [1]. The total energy resolution for 662 keV gamma-rays from 137Cs source is equal to about 6%, whereas intrinsic resolution is equal to 5.2%. Additionally, we made basic measurements of photoelectron yield, non-proportionality and total energy resolution of small sample (5×5×5 mm3) of GAGG:Ce crystal coupled to Hamamatsu MPPC array (6×6 mm2). The results show that the performance of GAGG:Ce measured with the MPPC array are similar to those measured with the PMT.
Keywords :
Scintillation detectors , Ce-doped crystals , Nonproportionality , Fast timing , SiPMs light readout
