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First tests of the applicability of gamma-ray imaging for background discrimination in time-of-flight neutron capture measurements

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10.1016/j.nima.2016.03.073
 
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hdl:2117/90017

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Perez Magan, D. L.
Caballero Ontanaya, Luis
Domingo Pardo, César
Agramunt Ros, Jorge
Albiol, F.
Casanovas Grau, Albert
Gonzalez, A.
Guerrero, C.
Lerendegui Marco, J.
Tarifeño Saldivia, Ariel EstebanMés informacióMés informació
Document typeArticle
Defense date2016-07-01
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
This work is protected by the corresponding intellectual and industrial property rights. Except where otherwise noted, its contents are licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
In this work we explore for the first time the applicability of using gamma-ray imaging in neutron capture measurements to identify and suppress spatially localized background. For this aim, a pinhole gamma camera is assembled, tested and characterized in terms of energy and spatial performance. It consists of a monolithic CeBr3 scintillating crystal coupled to a position-sensitive photomultiplier and readout through an integrated circuit AMIC2GR. The pinhole collimator is a massive carven block of lead. A series of dedicated measurements with calibrated sources and with a neutron beam incident on a Au-197 sample have been carried out at n_TOF, achieving an enhancement of a factor of two in the signal-to-background ratio when selecting only those events coming from the direction of the sample. (C) 2016 Elsevier B.V. All rights reserved.
CitationPerez, D., Caballero Ontanaya, L., Domingo-Pardo, C., Agramunt, J., Albiol, F., Casanovas, A., Gonzalez, A., Guerrero, C., Lerendegui, J., Tarifeño, A. First tests of the applicability of gamma-ray imaging for background discrimination in time-of-flight neutron capture measurements. "Nuclear instruments and methods in physics research. Section A, accelerators SP", 1 Juliol 2016, vol. 823, p. 107-119. 
URIhttp://hdl.handle.net/2117/90017
DOI10.1016/j.nima.2016.03.073
ISSN0168-9002
Publisher versionhttp://www.sciencedirect.com/science/article/pii/S0168900216300961
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  • NEMEN - Nanoenginyeria de materials aplicats a l'energia - Articles de revista [244]
  • INTE - Institut de Tècniques Energètiques - Articles de revista [287]
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