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Sensitivity of GAGG based scintillation neutron detector with SiPM readout
Fedorov, A.,Gurinovich, V.,Guzov, V.,Dosovitskiy, G.,Korzhik, M.,Kozhemyakin, V.,Lopatik, A.,Kozlov, D.,Mechinsky, V.,Retivov, V. Korean Nuclear Society 2020 Nuclear Engineering and Technology Vol.52 No.10
Here we report on the first results of sensitivity evaluation of the gadolinium-aluminum-gallium- garnet (GAGG) scintillation detector with SiPM readout to fast and slow neutrons and, to the natural background and Co-60 γ-radiation as well. Data on sensitivity were obtained using certified dosimetry benches, so it can be utilized in the calculation of detection limits of neutron flux with such type of detectors. It was concluded that use of GAGG scintillator has a good prospect for neutron monitoring in different parts of nuclear research reactors and power plants.
Korzhik M.,Abashev R.,Fedorov A.,Dosovitskiy G.,Gordienko E.,Kamenskikh I.,Kazlou D.,Kuznecova D.,Mechinsky V.,Pustovarov V.,Retivov V.,Vasil'ev A. 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.7
Ceramics of quaternary garnets (Gd,Y)3Al2Ga3O12 doped with Ce, Tb have been fabricated and evaluated as prospective materials for indirect energy converters of a-and b-voltaic. Samples were characterized at excitation with an X-ray source and an intense 150 keV electron beam and showed good temperature stability of their emission and tolerance to irradiation. The role of X-rays accompanied the a-particle emitting in the increase of the conversion efficiency is clarified. The garnet-type structure of the matrix in the developed materials allows the production of quality crystalline mass with a light yield exceeding that of the commonly used YAG: Ce scintillator by a factor of two times