Mechanical stability of the CMS strip tracker measured with a laser alignment system
Name
Sirunyan_2017_J._Inst._12_P04023.pdf
Description
Published version
Size
8.97 MB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Abercrombie, Daniel Robert
Allen, Brandon Leigh
Apyan, Aram
Azzolini, Virginia
Barbieri, Richard Alexander
Baty, Austin Alan
Bi, Ran
Bierwagen, Katharina
Brandt, Stephanie Akemi
Busza, Wit
Date Issued
April 2017
Journal
Journal of Instrumentation
Publisher
IOP Publishing
Citation
Sirunyan, A. M. et al. "Mechanical stability of the CMS strip tracker measured with a laser alignment system." Journal of Instrumentation 12 (April 2017): P04023 © 2017 CERN for the benefit of the CMS collaboration
Version
Final published version
Abstract
The CMS tracker consists of 206 m 2 of silicon strip sensors assembled on carbon fibre composite structures and is designed for operation in the temperature range from -25 to +25°C. The mechanical stability of tracker components during physics operation was monitored with a few μm resolution using a dedicated laser alignment system as well as particle tracks from cosmic rays and hadron-hadron collisions. During the LHC operational period of 2011-2013 at stable temperatures, the components of the tracker were observed to experience relative movements of less than 30μm. In addition, temperature variations were found to cause displacements of tracker structures of about 2μm°C, which largely revert to their initial positions when the temperature is restored to its original value.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Terms of Use
Creative Commons Attribution 3.0 unported license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1088/1748-0221/12/04/P04023
