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Tracker Alignment Performance Plots after Commissioning

During the LHC shutdown in Winter 2016/17, the CMS pixel detector, the inner component of the CMS Tracker, was replaced by the Phase-1 upgrade detector. Among others improvements, the new pixel detector consists of four instead of three layers in the central barrel region (BPIX) and three instead of...

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Autor principal: CMS Collaboration
Lenguaje:eng
Publicado: 2017
Materias:
Acceso en línea:http://cds.cern.ch/record/2297526
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author CMS Collaboration
author_facet CMS Collaboration
author_sort CMS Collaboration
collection CERN
description During the LHC shutdown in Winter 2016/17, the CMS pixel detector, the inner component of the CMS Tracker, was replaced by the Phase-1 upgrade detector. Among others improvements, the new pixel detector consists of four instead of three layers in the central barrel region (BPIX) and three instead of two disks in the endcap regions (FPIX). In this report, performance plots of pixel detector alignment results are presented, which were obtained with both cosmic-ray and pp collision data acquired at the beginning of the 2017 LHC operation. Alignment constants have been derived for each data-taking period to the level of single module positions in both the pixel and the strip detectors. The complete understanding of the alignment and biases was derived by using two algorithms, Millepede-II and HipPy. The results confirm each other.
id cern-2297526
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2017
record_format invenio
spelling cern-22975262019-09-30T06:29:59Zhttp://cds.cern.ch/record/2297526engCMS CollaborationTracker Alignment Performance Plots after CommissioningDetectors and Experimental TechniquesDuring the LHC shutdown in Winter 2016/17, the CMS pixel detector, the inner component of the CMS Tracker, was replaced by the Phase-1 upgrade detector. Among others improvements, the new pixel detector consists of four instead of three layers in the central barrel region (BPIX) and three instead of two disks in the endcap regions (FPIX). In this report, performance plots of pixel detector alignment results are presented, which were obtained with both cosmic-ray and pp collision data acquired at the beginning of the 2017 LHC operation. Alignment constants have been derived for each data-taking period to the level of single module positions in both the pixel and the strip detectors. The complete understanding of the alignment and biases was derived by using two algorithms, Millepede-II and HipPy. The results confirm each other.CMS-DP-2017-054CERN-CMS-DP-2017-054oai:cds.cern.ch:22975262017-12-09
spellingShingle Detectors and Experimental Techniques
CMS Collaboration
Tracker Alignment Performance Plots after Commissioning
title Tracker Alignment Performance Plots after Commissioning
title_full Tracker Alignment Performance Plots after Commissioning
title_fullStr Tracker Alignment Performance Plots after Commissioning
title_full_unstemmed Tracker Alignment Performance Plots after Commissioning
title_short Tracker Alignment Performance Plots after Commissioning
title_sort tracker alignment performance plots after commissioning
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/2297526
work_keys_str_mv AT cmscollaboration trackeralignmentperformanceplotsaftercommissioning