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Lead tungstate crystals for the CMS electromagnetic calorimeter at the LHC

With its over 80,000 scintillating lead tungstate PbWO/sub 4/ (PWO) crystals the CMS electromagnetic calorimeter (ECAL) will be the largest one ever constructed. It was designed to work in the demanding LHC environment and give a resolution of 0.5% for photon energies above 50 GeV/c. An important R...

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Autor principal: Dafinei, I
Lenguaje:eng
Publicado: 2002
Materias:
Acceso en línea:http://cds.cern.ch/record/621461
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author Dafinei, I
author_facet Dafinei, I
author_sort Dafinei, I
collection CERN
description With its over 80,000 scintillating lead tungstate PbWO/sub 4/ (PWO) crystals the CMS electromagnetic calorimeter (ECAL) will be the largest one ever constructed. It was designed to work in the demanding LHC environment and give a resolution of 0.5% for photon energies above 50 GeV/c. An important R & D effort was necessary in order to guarantee the production of PWO crystals able to satisfy such challenging constraints. The performance of the pre-production crystal batches (about 6000 barrel crystals) is consistent with the very strict quality parameters defined by the ECAL Collaboration. The meaning of quality controls as well as the main characteristics of these crystals are discussed. More, recent developments in the PWO crystal growth technology may speedup the crystal supplying for the ECAL construction. (15 refs).
id cern-621461
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2002
record_format invenio
spelling cern-6214612019-09-30T06:29:59Zhttp://cds.cern.ch/record/621461engDafinei, ILead tungstate crystals for the CMS electromagnetic calorimeter at the LHCNuclear PhysicsWith its over 80,000 scintillating lead tungstate PbWO/sub 4/ (PWO) crystals the CMS electromagnetic calorimeter (ECAL) will be the largest one ever constructed. It was designed to work in the demanding LHC environment and give a resolution of 0.5% for photon energies above 50 GeV/c. An important R & D effort was necessary in order to guarantee the production of PWO crystals able to satisfy such challenging constraints. The performance of the pre-production crystal batches (about 6000 barrel crystals) is consistent with the very strict quality parameters defined by the ECAL Collaboration. The meaning of quality controls as well as the main characteristics of these crystals are discussed. More, recent developments in the PWO crystal growth technology may speedup the crystal supplying for the ECAL construction. (15 refs).oai:cds.cern.ch:6214612002
spellingShingle Nuclear Physics
Dafinei, I
Lead tungstate crystals for the CMS electromagnetic calorimeter at the LHC
title Lead tungstate crystals for the CMS electromagnetic calorimeter at the LHC
title_full Lead tungstate crystals for the CMS electromagnetic calorimeter at the LHC
title_fullStr Lead tungstate crystals for the CMS electromagnetic calorimeter at the LHC
title_full_unstemmed Lead tungstate crystals for the CMS electromagnetic calorimeter at the LHC
title_short Lead tungstate crystals for the CMS electromagnetic calorimeter at the LHC
title_sort lead tungstate crystals for the cms electromagnetic calorimeter at the lhc
topic Nuclear Physics
url http://cds.cern.ch/record/621461
work_keys_str_mv AT dafineii leadtungstatecrystalsforthecmselectromagneticcalorimeteratthelhc