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Upgrade of the CMS hardron calorimeter for an upgraded LHC

The CMS barrel and endcap hadron calorimeters (Hcal) upgrading the current photo-sensors are hybrid photodiodes (HPDs) to meet the demands of the upgraded luminosity of the LHC. A key aspect of the Hcal upgrade is to add longitudinal segmentation to improve background rejection, energy resolution, a...

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Autor principal: Anderson, Jake
Lenguaje:eng
Publicado: 2012
Materias:
Acceso en línea:http://cds.cern.ch/record/1479355
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author Anderson, Jake
author_facet Anderson, Jake
author_sort Anderson, Jake
collection CERN
description The CMS barrel and endcap hadron calorimeters (Hcal) upgrading the current photo-sensors are hybrid photodiodes (HPDs) to meet the demands of the upgraded luminosity of the LHC. A key aspect of the Hcal upgrade is to add longitudinal segmentation to improve background rejection, energy resolution, and electron isolation at L1 trigger. The increased segmentation can be achieved by replacing the HPD's with multi-pixel Geiger-mode avalanche photodiodes. The upgraded electronics are required to operate in a harsh environment and are constrained by the existing infrastructure. The proposed solutions span from chip level to system level. They include the development of a new ADC ASIC, the design and testing of higher speed transmitters to handle the increased data volume, the evaluation and use of circuits from other developments, evaluation of commercial FPGAs, better thermal design and improvements in the overall architecture.
id cern-1479355
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2012
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spelling cern-14793552019-09-30T06:29:59Zhttp://cds.cern.ch/record/1479355engAnderson, JakeUpgrade of the CMS hardron calorimeter for an upgraded LHCDetectors and Experimental TechniquesThe CMS barrel and endcap hadron calorimeters (Hcal) upgrading the current photo-sensors are hybrid photodiodes (HPDs) to meet the demands of the upgraded luminosity of the LHC. A key aspect of the Hcal upgrade is to add longitudinal segmentation to improve background rejection, energy resolution, and electron isolation at L1 trigger. The increased segmentation can be achieved by replacing the HPD's with multi-pixel Geiger-mode avalanche photodiodes. The upgraded electronics are required to operate in a harsh environment and are constrained by the existing infrastructure. The proposed solutions span from chip level to system level. They include the development of a new ADC ASIC, the design and testing of higher speed transmitters to handle the increased data volume, the evaluation and use of circuits from other developments, evaluation of commercial FPGAs, better thermal design and improvements in the overall architecture.CMS-CR-2012-234oai:cds.cern.ch:14793552012-09-13
spellingShingle Detectors and Experimental Techniques
Anderson, Jake
Upgrade of the CMS hardron calorimeter for an upgraded LHC
title Upgrade of the CMS hardron calorimeter for an upgraded LHC
title_full Upgrade of the CMS hardron calorimeter for an upgraded LHC
title_fullStr Upgrade of the CMS hardron calorimeter for an upgraded LHC
title_full_unstemmed Upgrade of the CMS hardron calorimeter for an upgraded LHC
title_short Upgrade of the CMS hardron calorimeter for an upgraded LHC
title_sort upgrade of the cms hardron calorimeter for an upgraded lhc
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1479355
work_keys_str_mv AT andersonjake upgradeofthecmshardroncalorimeterforanupgradedlhc