TY - JOUR
T1 - Effect of Mg2+ ions co-doping on timing performance and radiation tolerance of Cerium doped Gd3Al2Ga3O12 crystals
AU - Lucchini, M. T.
AU - Babin, V.
AU - Bohacek, P.
AU - Gundacker, S.
AU - Kamada, K.
AU - Nikl, M.
AU - Petrosyan, A.
AU - Yoshikawa, A.
AU - Auffray, E.
N1 - Funding Information:
This work was performed in the framework of the Crystal Clear Collaboration and received funding from the European Union׳s Horizon 2020 research and innovation program under the Marie Skodowska-Curie Grant agreement no. 644260 (Intelum) and from the ERC Advanced Grant no. 338953 (TICAL). Support has been received also from ASCIMAT project under Grant agreement no. 690599 and from COST Action TD1401 (FAST). We also acknowledge the support received by the Czech Science foundation P204/12/0805 . This work is partially supported by Adaptable & Seamless Technology Transfer Program through Target-driven R & D (A-STEP), JST , Development of Systems and Technology for Advanced Measurement and Analysis, Japan Science and Technology Agency (JST) and New Energy and Industrial Technology Development Organization (NEDO) .
Publisher Copyright:
© 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND.
PY - 2016/4/21
Y1 - 2016/4/21
N2 - Inorganic scintillators with high density and high light yield are of major interest for applications in medical imaging and high energy physics detectors. In this work, the optical and scintillation properties of Mg co-doped Ce:Gd3Al2Ga3O12 crystals, grown using Czochralski technique, have been investigated and compared with Ce:Gd3Al2Ga3O12 ones prepared with identical technology. Improvements in the timing performance of the Mg co-doped samples with respect to Ce:Gd3Al2Ga3O12 ones have been measured, namely a substantial shortening of the rise time and scintillation decay components and lower afterglow were achieved. In particular, a significantly better coincidence time resolution of 233 ps FWHM, being a fundamental parameter for TOF-PET devices, has been observed in Mg co-doped crystals. The samples have also shown a good radiation tolerance under high doses of γ-rays, making them suitable candidates for applications in harsh radiation environments, such as detectors at future collider experiments.
AB - Inorganic scintillators with high density and high light yield are of major interest for applications in medical imaging and high energy physics detectors. In this work, the optical and scintillation properties of Mg co-doped Ce:Gd3Al2Ga3O12 crystals, grown using Czochralski technique, have been investigated and compared with Ce:Gd3Al2Ga3O12 ones prepared with identical technology. Improvements in the timing performance of the Mg co-doped samples with respect to Ce:Gd3Al2Ga3O12 ones have been measured, namely a substantial shortening of the rise time and scintillation decay components and lower afterglow were achieved. In particular, a significantly better coincidence time resolution of 233 ps FWHM, being a fundamental parameter for TOF-PET devices, has been observed in Mg co-doped crystals. The samples have also shown a good radiation tolerance under high doses of γ-rays, making them suitable candidates for applications in harsh radiation environments, such as detectors at future collider experiments.
KW - Calorimeters
KW - Inorganic scintillators
KW - Medical imaging
KW - Radiation tolerance
KW - Time-of-flight
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U2 - 10.1016/j.nima.2016.02.004
DO - 10.1016/j.nima.2016.02.004
M3 - Article
AN - SCOPUS:84959441039
SN - 0168-9002
VL - 816
SP - 176
EP - 183
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
ER -