Enhanced time response of 1-in. LaBr_3(Ce) crystals by leading edge and constant fraction techniques

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dc.contributor.authorVedia Fernández, María Victoria
dc.contributor.authorMach Henryk, Andrzej
dc.contributor.authorFraile Prieto, Luis Mario
dc.contributor.authorUdías Moinelo, José Manuel
dc.contributor.authorLalkovski, S.
dc.date.accessioned2023-06-18T06:46:31Z
dc.date.available2023-06-18T06:46:31Z
dc.date.issued2015-09-21
dc.description© 2015 Elsevier B.V. This work was partially supported by the Spanish MINECO through Projects FPA2010-17142, FPA2013-41267-P and Consolider-CPAN CSD-2007-00042. Funding by the ERA-NET NuPNET via Spanish Project PRI-PIMNUP-2011-1338 (FATIMA-NuPNET) and Bulgarian Project DNS7RP01-4 (FATIMA-NuPNET) is also recognized. V.V. and H.M. acknowledge the financial aid by the Consolider-CPAN CSD-2007-00042 project. The electronics for the test bench and the reference detectors were provided by the Fast Timing Pool of Electronics and MASTICON.
dc.description.abstractWe have characterized in depth the time response of three detectors equipped with cylindrical LaBr_3(Ce) crystals with dimensions of 1-in. in height and 1-in. in diameter, and having nominal Ce doping concentration of 5%, 8% and 10%. Measurements were performed at Co-60 and Na-22 gamma-ray energies against a fast BaF2 reference detector. The time resolution was optimized by the choice of the photomultiplier bias voltage and the fine tuning of the parameters of the constant fraction discriminator, namely the zero-crossing and the external delay. We report here on the optimal time resolution of the three crystals. It is observed that timing properties are influence('by the amount of Ce doping and the crystal homogeneity. For the crystal with 8% of Ce doping the use of the ORTEC 935 CFD at very shorts delays in addition to the Hamamatsu R9779 PMT has made it possible to improve the LaBr3(Ce) time resolution from the best literature value at Co-60 photon energies to below 100 ps. (C) 2015 Elsevier B.V. All rights reserved.
dc.description.departmentDepto. de Estructura de la Materia, Física Térmica y Electrónica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipMINECO, Spain
dc.description.sponsorshipERA-NET NuPNET via Spanish Project
dc.description.sponsorshipConsolider-CPAN project
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/32963
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dc.identifier.doi10.1016/j.nima.2015.05.058
dc.identifier.issn0168-9002
dc.identifier.officialurlhttp://dx.doi.org/10.1016/j.nima.2015.05.058
dc.identifier.relatedurlhttp://www.sciencedirect.com/
dc.identifier.relatedurlhttp://arxiv.org/abs/1506.03044
dc.identifier.urihttps://hdl.handle.net/20.500.14352/24134
dc.journal.titleNuclear instruments & methods in physics research. Section A, Accelerators spectrometers detectors and associated equipment
dc.language.isoeng
dc.page.final150
dc.page.initial144
dc.publisherElsevier Science BV
dc.relation.projectIDFPA2010-17142
dc.relation.projectIDFPA2013-41267-P
dc.relation.projectIDConsolider-CPAN CSD-2007-00042
dc.relation.projectIDPRI-PIMNUP-2011-1338 (FATIMA-NuPNET)
dc.relation.projectIDDNS7RP01-4 (FATIMA-NuPNET)
dc.rights.accessRightsopen access
dc.subject.cdu539.1
dc.subject.keywordPicosecond lifetime measurements
dc.subject.keywordNeutron-rich nuclei
dc.subject.keywordEnergy resolution
dc.subject.keywordScintillators
dc.subject.keywordLaBr3-Ce
dc.subject.keywordXP20D0
dc.subject.ucmFísica nuclear
dc.subject.unesco2207 Física Atómica y Nuclear
dc.titleEnhanced time response of 1-in. LaBr_3(Ce) crystals by leading edge and constant fraction techniques
dc.typejournal article
dc.volume.number795
dspace.entity.typePublication
relation.isAuthorOfPublicationf4e3f123-33ad-46e8-a3b6-00fd1eba9eeb
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relation.isAuthorOfPublication.latestForDiscoveryec83106c-33f4-426c-afd6-68c5d859f9d4
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