Perspectives of Inorganic Scintillator GAGG Application for Precision Electromagnetic Calorimetry

Scintillation crystals Gd Al Ga O (GAGG) are considered for the application in ionizing-radiation detectors because of their high radiation resistance, density and light yield. These crystals can be used in addition to lead tungstate (PbWO or PWO) crystals for the development of a new generation ele...

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Bibliographic Details
Published in:Physics of atomic nuclei 2023-02, Vol.86 (1), p.33-43
Main Authors: Averyanov, D. A., Blau, D. S., Tsyvkunova, E. A.
Format: Article
Language:English
Subjects:
Calorimetry
Crystals
Electromagnetism
ELEMENTARY PARTICLES AND FIELDS/Experiment
Ionizing radiation
Lead tungstates
Optimization
Particle and Nuclear Physics
Photons
Physics
Physics and Astronomy
Radiation
Radiation detectors
Radiation tolerance
Scintillation counters
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Summary:Scintillation crystals Gd Al Ga O (GAGG) are considered for the application in ionizing-radiation detectors because of their high radiation resistance, density and light yield. These crystals can be used in addition to lead tungstate (PbWO or PWO) crystals for the development of a new generation electromagnetic calorimeter with good spatial and energy resolutions in a broad energy range. PWO crystals enable an accurate detection of high energy photons, while the addition of GAGG crystals makes it possible to precisely measure photon energies down to a few MeV units. Different options of composite electromagnetic calorimeter based on PWO and GAGG crystals are considered to optimize spatial and energy resolutions in a broad energy range (from 1 MeV to 100 GeV). The optimization is based on Geant4 simulations taking into account light collection as well as using different photodetectors and noise of electronics. The simulations are verified with the help of light yield measurements of GAGG samples obtained using radioactive sources and test beam measurements of PWO based photon spectrometer of the ALICE experiment at CERN.
ISSN:1063-7788
1562-692X
DOI:10.1134/S1063778823010052