TY - JOUR
T1 - Performance comparison between ceramic Ce:GAGG and single crystal Ce:GAGG with digital-SiPM
AU - Park, C.
AU - Kim, C.
AU - Kim, J.
AU - Lee, Y.
AU - Na, Y.
AU - Lee, K.
AU - Yeom, J. Y.
N1 - Funding Information:
This work was supported in part by NRF National Research Foundation of Korea (NRF-2014R1A1A1005242)
Publisher Copyright:
© 2017 IOP Publishing Ltd and Sissa Medialab srl.
PY - 2017/1/2
Y1 - 2017/1/2
N2 - 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 × 3 × 2 mm3 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 22Na 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.
AB - 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 × 3 × 2 mm3 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 22Na 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.
KW - Gamma detectors
KW - Particle detectors
KW - Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators)
KW - X-ray detectors
UR - http://www.scopus.com/inward/record.url?scp=85012044254&partnerID=8YFLogxK
U2 - 10.1088/1748-0221/12/01/P01002
DO - 10.1088/1748-0221/12/01/P01002
M3 - Article
AN - SCOPUS:85012044254
VL - 12
JO - Journal of Instrumentation
JF - Journal of Instrumentation
SN - 1748-0221
IS - 1
M1 - P01002
ER -