Energy resolution and temperature dependence of Ce:GAGG coupled to 3mm x 3mm silicon photomultipliers

Seitz, B., Campos Rivera, N. and Stewart, A.G. (2016) Energy resolution and temperature dependence of Ce:GAGG coupled to 3mm x 3mm silicon photomultipliers. IEEE Transactions on Nuclear Science, 63(2), pp. 503-508. (doi:10.1109/TNS.2016.2535235)

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Abstract

Scintillators are a critical component of sensor systems for the detection of ionizing radiation. Such systems have a diverse portfolio of applications from medical imaging, well logging in oil exploration and detection systems for the prevention of the illicit movement of nuclear materials. The rare earth element cerium is an ideal dopant for a variety of host scintillating materials due to the fast 5d1 → 4f radiative transition of Ce3+. Cerium-doped Gadolinium Aluminium Gallium Garnet (Ce:GAGG) is a relatively new single crystal scintillator with several interesting properties. These include high light yield; an emission peak well-matched to silicon sensors; and a low intrinsic energy resolution. Moreover, the material has a high density and is non-hygroscopic. In this article we review the properties of cerium-doped GAGG and report Energy Resolution (ER) measurements over the temperature range -10◦C to +50◦C for 3 × 3 × 30 mm3 Ce:GAGG crystals optically coupled to a Silicon Photomultipler (SiPM) sensor with a 3mm × 3mm active area. In addition the linearity of the scintillator-SiPM response as a function of gamma energy is reported.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Stewart, Dr Andrew and Seitz, Dr Bjoern and Campos Rivera, Ms Natalia
Authors: Seitz, B., Campos Rivera, N., and Stewart, A.G.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:IEEE Transactions on Nuclear Science
Publisher:Institute of Electrical and Electronics Engineers
ISSN:0018-9499
ISSN (Online):1558-1578
Copyright Holders:Copyright © 2016 IEEE
First Published:First published in IEEE Transactions on Nuclear Science 63(2): 503-508
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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