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Description
Scintillation crystals made of a new promising material Gd₃Al₂Ga₃O₁₂ (GAGG) are considered because of their high radiation resistance, density and light yield [1, 2].These crystals can be used in addition to lead tungstate (PbWO4) crystals for development of a new generation electromagnetic calorimeter with good spatial and energy resolutions in a wide energy range. PbWO4 crystals enable 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.
Different options of composite electromagnetic calorimeter based on PWO and GAGG crystals are considered to optimise spatial and energy resolutions in a wide energy range (from 1 MeV to 100 GeV). Optimisation is based on GEANT4 simulations with accounting of light collection using different photodetectors and a noise of electronics. The simulations are verified using measurements of GAGG samples obtained with radioactive sources and test beam measurements of PbWO4 based Photon Spectrometer of the ALICE experiment at CERN [3].
1. K. Kamada, T. Yanagida [et al.], IEEE trans. on nuclear science 59(5):2112-2115 (2012)
2. Y. Zhu, S.Qian [et al.], Optical Materials 105, 109964 (2020)
3. D.V. Aleksandrov [et al.], Nucl. Instrum. Meth. A550, 169–184 (2005)
| The speaker is a student or young scientist | Yes |
|---|---|
| Section | 6. Applications of nuclear methods in science and technology |
