Performance of cerium-doped Gd3Al2Ga 3O12 (GAGG:Ce) scintillator in gamma-ray spectrometry

Joanna Iwanowska, Lukasz Swiderski, Tomasz Szczesniak, Pawel Sibczynski, Marek Moszynski, Martyna Grodzicka, Kei Kamada, Kousuke Tsutsumi, Yoshiyuki Usuki, Takayuki Yanagida, Akira Yoshikawa

Research output: Contribution to journalArticlepeer-review

96 Citations (Scopus)

Abstract

Performance of cerium-doped Gd3Al2Ga 3O12 (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.

Original languageEnglish
Pages (from-to)34-40
Number of pages7
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume712
DOIs
Publication statusPublished - 2013 Mar 25

Keywords

  • Ce-doped crystals
  • Fast timing
  • Nonproportionality
  • Scintillation detectors
  • SiPMs light readout

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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