The CMS ECAL Barrel HV system

The CMS electro-magnetic calorimeter comprises 75848 scintillating lead tungstate crystals. 61200 crystals are contained in the ECAL Barrel section and these are readout by avalanche photodiodes (APD) with internal gain. The APD gain strongly depends on the bias voltage that, for a gain G=50, is aro...

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Detalles Bibliográficos
Autor principal: Bartoloni, Alessandro
Lenguaje:eng
Publicado: 2012
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/1494501
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author Bartoloni, Alessandro
author_facet Bartoloni, Alessandro
author_sort Bartoloni, Alessandro
collection CERN
description The CMS electro-magnetic calorimeter comprises 75848 scintillating lead tungstate crystals. 61200 crystals are contained in the ECAL Barrel section and these are readout by avalanche photodiodes (APD) with internal gain. The APD gain strongly depends on the bias voltage that, for a gain G=50, is around 400 V. In order to match the requirements for gain stability, the power supply voltage must be stable to within 0.01\%. In this talk we describe our experience with the installed Barrel HV power supply system which has been used for data taking at the LHC since 2008.
id cern-1494501
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2012
record_format invenio
spelling cern-14945012019-09-30T06:29:59Zhttp://cds.cern.ch/record/1494501engBartoloni, AlessandroThe CMS ECAL Barrel HV systemDetectors and Experimental TechniquesThe CMS electro-magnetic calorimeter comprises 75848 scintillating lead tungstate crystals. 61200 crystals are contained in the ECAL Barrel section and these are readout by avalanche photodiodes (APD) with internal gain. The APD gain strongly depends on the bias voltage that, for a gain G=50, is around 400 V. In order to match the requirements for gain stability, the power supply voltage must be stable to within 0.01\%. In this talk we describe our experience with the installed Barrel HV power supply system which has been used for data taking at the LHC since 2008.CMS-CR-2012-285oai:cds.cern.ch:14945012012-10-25
spellingShingle Detectors and Experimental Techniques
Bartoloni, Alessandro
The CMS ECAL Barrel HV system
title The CMS ECAL Barrel HV system
title_full The CMS ECAL Barrel HV system
title_fullStr The CMS ECAL Barrel HV system
title_full_unstemmed The CMS ECAL Barrel HV system
title_short The CMS ECAL Barrel HV system
title_sort cms ecal barrel hv system
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1494501
work_keys_str_mv AT bartolonialessandro thecmsecalbarrelhvsystem
AT bartolonialessandro cmsecalbarrelhvsystem

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