A Diode-Pumped DP2-447 Blue Laser for Monitoring CMS Lead Tungstate Crystals Calorimeter at the LHC

Monitoring the changes in channel response is crucial to maintain the energy resolution of the CMS electromagnetic calorimeter. A new diode-pumped solid state blue laser was commissioned and installed at CERN for 2012 operation. This laser has a simple structure and is more reliable than the existin...

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Detalles Bibliográficos
Autor principal: Zhang, Liyuan
Lenguaje:eng
Publicado: 2012
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/1485595
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author Zhang, Liyuan
author_facet Zhang, Liyuan
author_sort Zhang, Liyuan
collection CERN
description Monitoring the changes in channel response is crucial to maintain the energy resolution of the CMS electromagnetic calorimeter. A new diode-pumped solid state blue laser was commissioned and installed at CERN for 2012 operation. This laser has a simple structure and is more reliable than the existing lamp-pumped lasers used by the monitoring system. The stability of critical parameters, such as the pulse energy, width and centre timing, is much better than that of the lamp-pumped lasers. The characteristics of this blue laser are described. Its performance in-situ at LHC is elaborated. The prospects for improving the light monitoring precision are discussed.
id cern-1485595
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2012
record_format invenio
spelling cern-14855952019-09-30T06:29:59Zhttp://cds.cern.ch/record/1485595engZhang, LiyuanA Diode-Pumped DP2-447 Blue Laser for Monitoring CMS Lead Tungstate Crystals Calorimeter at the LHCDetectors and Experimental TechniquesMonitoring the changes in channel response is crucial to maintain the energy resolution of the CMS electromagnetic calorimeter. A new diode-pumped solid state blue laser was commissioned and installed at CERN for 2012 operation. This laser has a simple structure and is more reliable than the existing lamp-pumped lasers used by the monitoring system. The stability of critical parameters, such as the pulse energy, width and centre timing, is much better than that of the lamp-pumped lasers. The characteristics of this blue laser are described. Its performance in-situ at LHC is elaborated. The prospects for improving the light monitoring precision are discussed.CMS-CR-2012-230oai:cds.cern.ch:14855952012-09-13
spellingShingle Detectors and Experimental Techniques
Zhang, Liyuan
A Diode-Pumped DP2-447 Blue Laser for Monitoring CMS Lead Tungstate Crystals Calorimeter at the LHC
title A Diode-Pumped DP2-447 Blue Laser for Monitoring CMS Lead Tungstate Crystals Calorimeter at the LHC
title_full A Diode-Pumped DP2-447 Blue Laser for Monitoring CMS Lead Tungstate Crystals Calorimeter at the LHC
title_fullStr A Diode-Pumped DP2-447 Blue Laser for Monitoring CMS Lead Tungstate Crystals Calorimeter at the LHC
title_full_unstemmed A Diode-Pumped DP2-447 Blue Laser for Monitoring CMS Lead Tungstate Crystals Calorimeter at the LHC
title_short A Diode-Pumped DP2-447 Blue Laser for Monitoring CMS Lead Tungstate Crystals Calorimeter at the LHC
title_sort diode-pumped dp2-447 blue laser for monitoring cms lead tungstate crystals calorimeter at the lhc
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1485595
work_keys_str_mv AT zhangliyuan adiodepumpeddp2447bluelaserformonitoringcmsleadtungstatecrystalscalorimeteratthelhc
AT zhangliyuan diodepumpeddp2447bluelaserformonitoringcmsleadtungstatecrystalscalorimeteratthelhc

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