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CMS Tracker Alignment Performance Results 2018

The tracking system of the CMS detector provides excellent resolution for charged particle tracks and an efficient way of tagging jets. In order to reconstruct good quality tracks, the position and orientation of each silicon pixel and strip module needs to be determined with a precision of several...

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Autor principal: CMS Collaboration
Lenguaje:eng
Publicado: 2018
Materias:
Acceso en línea:http://cds.cern.ch/record/2650977
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author CMS Collaboration
author_facet CMS Collaboration
author_sort CMS Collaboration
collection CERN
description The tracking system of the CMS detector provides excellent resolution for charged particle tracks and an efficient way of tagging jets. In order to reconstruct good quality tracks, the position and orientation of each silicon pixel and strip module needs to be determined with a precision of several micrometers. In this note the performance of the alignment of the CMS tracker with data taken during 2018 is presented. First the performance is shown after alignment with cosmic ray tracks collected prior to the start of proton-proton ($pp$) collision data taking in 2018. Then, the performance of the alignment achieved with cosmic ray tracks and a complete set of proton-proton collision data recorded at 3.8 T magnetic field collected at $\sqrt{s}=13\,$TeV is presented. Data-driven validation of the results are shown. The stability of the calibrations against time-dependent movements of the detector large-scale structures is demonstrated, as well as uniformity of the charged particle momentum scale, making use of Z$\rightarrow\mu\mu$ decays.
id cern-2650977
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2018
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spelling cern-26509772019-09-30T06:29:59Zhttp://cds.cern.ch/record/2650977engCMS CollaborationCMS Tracker Alignment Performance Results 2018Detectors and Experimental TechniquesThe tracking system of the CMS detector provides excellent resolution for charged particle tracks and an efficient way of tagging jets. In order to reconstruct good quality tracks, the position and orientation of each silicon pixel and strip module needs to be determined with a precision of several micrometers. In this note the performance of the alignment of the CMS tracker with data taken during 2018 is presented. First the performance is shown after alignment with cosmic ray tracks collected prior to the start of proton-proton ($pp$) collision data taking in 2018. Then, the performance of the alignment achieved with cosmic ray tracks and a complete set of proton-proton collision data recorded at 3.8 T magnetic field collected at $\sqrt{s}=13\,$TeV is presented. Data-driven validation of the results are shown. The stability of the calibrations against time-dependent movements of the detector large-scale structures is demonstrated, as well as uniformity of the charged particle momentum scale, making use of Z$\rightarrow\mu\mu$ decays.CMS-DP-2018-061CERN-CMS-DP-2018-061oai:cds.cern.ch:26509772018-11-27
spellingShingle Detectors and Experimental Techniques
CMS Collaboration
CMS Tracker Alignment Performance Results 2018
title CMS Tracker Alignment Performance Results 2018
title_full CMS Tracker Alignment Performance Results 2018
title_fullStr CMS Tracker Alignment Performance Results 2018
title_full_unstemmed CMS Tracker Alignment Performance Results 2018
title_short CMS Tracker Alignment Performance Results 2018
title_sort cms tracker alignment performance results 2018
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/2650977
work_keys_str_mv AT cmscollaboration cmstrackeralignmentperformanceresults2018