Bonn 2020 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 38: Instrumentation VII

HK 38.4: Vortrag

Mittwoch, 1. April 2020, 17:30–17:45, J-HS C

Beam accelerator experiments with the new GAGG scintillator — •Pavel Orsich1, Valerii Dormenev1, Kai-Thomas Brinkmann1, Markus Moritz1, Hans-Georg Zaunick1, Dmitry Kozlov2, and Mihkail Korzhik212nd Physics Institute, JLU, Giessen, Germany — 2Institute for Nuclear Problems, Minsk, Belarus

Recently developed mono-crystalline materials with garnet type structure, Gd3Al2Ga3O12 (GAGG), expected to be one of the tolerant crystals to detect different types of ionizing radiation. Relatively high density, fast scintillation kinetics, high light yield and high radiation hardness make GAGG a promising scintillator for calorimetry applications in harsh radiation environments.

Due to the content of Gd, which absorbs neutrons with following emission of γ-quanta, GAGG can be considered as a candidate for different types of neutron detectors. Moreover, the GAGG scintillation detectors, possessing fast response to γ-quanta, allow precise time-of-flight discrimination of the fast neutrons.

Here we report results of beam tests for two different geometries: a matrix consisting of sixty-four 4x4x40 mm3 GAGG pixels and a bulk geometry 20x20x25 mm3 crystal. Tests were performed with a 220 MeV proton beam with different targets (Pb, Polyethylene). The presented results will give an understanding about the future potential of GAGG scintillator, especially for next generation promt γ-detectors and PET applications.

This work was supported by HIC for FAIR.

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