Performance comparison between ceramic Ce:GAGG and single crystal Ce:GAGG with digital-SiPM
- Authors
- Park, C.; Kim, C.; Kim, J.; Lee, Y.; Na, Y.; Lee, K.; Yeom, J. Y.
- Issue Date
- 1월-2017
- Publisher
- IOP PUBLISHING LTD
- Keywords
- Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators); Gamma detectors; Particle detectors; X-ray detectors
- Citation
- JOURNAL OF INSTRUMENTATION, v.12
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF INSTRUMENTATION
- Volume
- 12
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/85109
- DOI
- 10.1088/1748-0221/12/01/P01002
- ISSN
- 1748-0221
- Abstract
- The Gd3Al2Ga3O12 (Ce: GAGG) is a new inorganic scintillator known for its attractive properties such as high light yield, stopping power and relatively fast decay time. In this study, we fabricated a ceramic Ce: GAGG scintillator as a cost-effective alternative to single crystal Ce: GAGG and, for the first time, investigated their performances when coupled to the digital silicon photomultiplier (dSiPM) - a new type of photosensor designed for applications in medical imaging, high energy and astrophysics. Compared to 3 x 3 x 2mm(3) sized single crystal Ce: GAGG, the translucent ceramic Ce: GAGG, which has a much lower transmittance than the single crystal, was determined to give an output signal amplitude that is approximately 61% of single crystal Ce: GAGG. The energy resolution of the 511 keV annihilation peak of a Na-22 source was measured to be 9.9 +/- 0.2% and 13.0 +/- 0.3% for the single and ceramic scintillators respectively. On the other hand, the coincidence resolving time (CRT) of ceramic Ce: GAGG was 307 +/- 23 ps, better than the 465 +/- 37 ps acquired with single crystals -probably attributed to its slightly faster decay time and higher proportion of the fast decay component. The ceramic Ce: GAGG may be a promising cost-effective candidate for applications that do not require thick scintillators such as x-ray detectors and charged particle detectors, and those that require time-of-flight capabilities.
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Collections - Graduate School > Department of Bioengineering > 1. Journal Articles
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