Characterization of LaBr3:Ce and CeBr3 calorimeter modules for 3D imaging in gamma-ray astronomy

Autor: N. Karkour, C. Hamadache, D. Linget, N. Dosme, L. Gibelin, X. Lafay, A. Gostojić, S. Blin, J. Kiener, E. Legay, X. Grave, V. Tatischeff, Jean Peyré, P. Barrillon
Přispěvatelé: Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM AN), Université Paris-Saclay-Univ. Paris-Sud-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CSNSM INSTRU, Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), CSNSM ELEC, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), CSNSM INFOR, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de l'Accélérateur Linéaire (LAL)
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2016, pp.24-42. ⟨10.1016/j.nima.2016.06.044⟩
ISSN: 0168-9002
DOI: 10.1016/j.nima.2016.06.044⟩
Popis: International audience; For the purpose of future space instrumentation for gamma-ray astronomy, we developed a small prototype of a Compton telescope and studied novel detector modules aimed for Compton imaging. We assembled and tested 2 modules, one with a cerium-doped lanthanum(111) bromide (LaBr3:Ce) crystal and the other with cerium(111) bromide (CeBr3). Both crystals measure 5 x 5 cm(2) in area and are 1 cm thick. They are coupled to and read out by 64-channel multi-anode PMTS. Our goals are to obtain the best possible energy resolution and position resolution in 3D on the first impact of an incident gamma-ray within the detector. Both information are vital for successful reconstruction of a Compton image with the telescope prototype. We developed a test bench to experimentally study both modules and have utilized a customized readout electronics and data acquisition system. Furthermore, we have written a detailed Geant4 simulation of the experiment, and utilize simulated data to train an Artificial Neural Network (ANN) algorithm to create a simplified 3D impact position reconstruction method. We give experimental test results obtained by both modules and present detailed parametrization and results from the Geant4 simulation and from the ANN. We compare and discuss the performance of the modules and conclude by giving a brief overview of the future prospects for using such modules in gamma-ray astronomy. (C) 2016 Elsevier B.V. All rights reserved.
Databáze: OpenAIRE
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