Experimental Study of the Lead Tungstate Scintillator Proton-Induced Damage and Recovery

Lead tungstate (PbWO4, or PWO) scintillating crystals are used by two of the four experiments at the Large Hadron Collider (LHC): 75848 in CMS and 17920 in ALICE. For the CMS electromagnetic calorimeter, one of the most important crystal properties is its radiation hardness. With the increase of lum...

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Detalles Bibliográficos
Autores principales: Auffray, Etiennette, Korjik, M, Singovski , A
Lenguaje:eng
Publicado: 2011
Materias:
Detectors and Experimental Techniques
Acceso en línea:https://dx.doi.org/10.1109/TNS.2012.2197416
http://cds.cern.ch/record/1406800
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author Auffray, Etiennette
Korjik, M
Singovski , A
author_facet Auffray, Etiennette
Korjik, M
Singovski , A
author_sort Auffray, Etiennette
collection CERN
description Lead tungstate (PbWO4, or PWO) scintillating crystals are used by two of the four experiments at the Large Hadron Collider (LHC): 75848 in CMS and 17920 in ALICE. For the CMS electromagnetic calorimeter, one of the most important crystal properties is its radiation hardness. With the increase of luminosity, the radiation level will increase drastically, particularly in the high pseudorapidity regions of the calorimeter. Beside the effects of color-centre formation caused by gamma-radiation, additional measurable effect originated by hadron irradiation could appear, which will further deteriorate the optical transmission of the crystals and therefore their efficiency. In this paper, we will present results of the proton-induced damage in PWO and a study of optical transmission recovery at different temperatures and under different light-induced "bleaching" conditions for proton-irradiated crystals.
id cern-1406800
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
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spelling cern-14068002019-09-30T06:29:59Zdoi:10.1109/TNS.2012.2197416http://cds.cern.ch/record/1406800engAuffray, EtiennetteKorjik, MSingovski , AExperimental Study of the Lead Tungstate Scintillator Proton-Induced Damage and RecoveryDetectors and Experimental TechniquesLead tungstate (PbWO4, or PWO) scintillating crystals are used by two of the four experiments at the Large Hadron Collider (LHC): 75848 in CMS and 17920 in ALICE. For the CMS electromagnetic calorimeter, one of the most important crystal properties is its radiation hardness. With the increase of luminosity, the radiation level will increase drastically, particularly in the high pseudorapidity regions of the calorimeter. Beside the effects of color-centre formation caused by gamma-radiation, additional measurable effect originated by hadron irradiation could appear, which will further deteriorate the optical transmission of the crystals and therefore their efficiency. In this paper, we will present results of the proton-induced damage in PWO and a study of optical transmission recovery at different temperatures and under different light-induced "bleaching" conditions for proton-irradiated crystals.CMS-CR-2011-257oai:cds.cern.ch:14068002011-10-21
spellingShingle Detectors and Experimental Techniques
Auffray, Etiennette
Korjik, M
Singovski , A
Experimental Study of the Lead Tungstate Scintillator Proton-Induced Damage and Recovery
title Experimental Study of the Lead Tungstate Scintillator Proton-Induced Damage and Recovery
title_full Experimental Study of the Lead Tungstate Scintillator Proton-Induced Damage and Recovery
title_fullStr Experimental Study of the Lead Tungstate Scintillator Proton-Induced Damage and Recovery
title_full_unstemmed Experimental Study of the Lead Tungstate Scintillator Proton-Induced Damage and Recovery
title_short Experimental Study of the Lead Tungstate Scintillator Proton-Induced Damage and Recovery
title_sort experimental study of the lead tungstate scintillator proton-induced damage and recovery
topic Detectors and Experimental Techniques
url https://dx.doi.org/10.1109/TNS.2012.2197416
http://cds.cern.ch/record/1406800
work_keys_str_mv AT auffrayetiennette experimentalstudyoftheleadtungstatescintillatorprotoninduceddamageandrecovery
AT korjikm experimentalstudyoftheleadtungstatescintillatorprotoninduceddamageandrecovery
AT singovskia experimentalstudyoftheleadtungstatescintillatorprotoninduceddamageandrecovery

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