SiPM Operational Experience in Outer HCAL in CMS

Autor:	K��nsken, Andreas
Jazyk:	angličtina
Rok vydání:	2014
Předmět:	High Energy Physics - Experiment (hep-ex) Physics - Instrumentation and Detectors Physics::Instrumentation and Detectors FOS: Physical sciences Instrumentation and Detectors (physics.ins-det) Detectors and Experimental Techniques High Energy Physics - Experiment
Popis:	The CMS Outer Hadron Calorimeter (HO) is the first large-scale hadron collider detector to use Silicon Photomultipliers (SiPMs). To build the system we installed and characterized 3000 SiPMs of which 1656 channels of SiPMs with 40MHz readout have currently been installed into CMS. We report on comparisons of in-situ and vendor-supplied measurements. We present results on working point optimization by I-V scanning and temperature vs voltage scanning. We have developed several techniques for determining the breakdown voltage in-situ. We compare the performance of each technique and its success in working point optimization. We present results on gain and breakdown voltage monitoring as well as the overall system stability. The CMS Outer Hadron Calorimeter (HO) is the first large-scale hadron collider detector to use Silicon Photomultipliers (SiPMs). To build the system we installed and characterized 3000 Hamamatsu SiPMs of which 1656 channels of SiPMs with 40MHz readout have currently been installed into CMS. We report on comparisons of in-situ and vendor-supplied measurements. We present results on working point optimization by I-V scanning and temperature vs voltage scanning. We have developed several techniques for determining the breakdown voltage in-situ. We compare the performance of each technique and its success in working point optimization. We present results on gain and breakdown voltage monitoring as well as the overall system stability. The CMS Outer Hadron Calorimeter (HO) is the first large-scale hadron collider detector to use Silicon Photomultipliers (SiPMs). To build the system we installed and characterized 3000 SiPMs of which 1656 channels of SiPMs with 40MHz readout have currently been installed into CMS. We report on comparisons of in-situ and vendor-supplied measurements. We present results on working point optimization by I-V scanning and temperature vs voltage scanning. We have developed several techniques for determining the breakdown voltage in-situ. We compare the performance of each technique and its success in working point optimization. We present results on gain and breakdown voltage monitoring as well as the overall system stability.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b259b9a4ea46e1e7dc6e3dc9ed809bc6 http://cds.cern.ch/record/1754148 Zobrazit plný text záznamu