Publication
Title
Mechanical stability of the CMS strip tracker measured with a laser alignment system
Author
Institution/Organisation
CMS Collaboration
Abstract
The CMS tracker consists of 206m(2) of silicon strip sensors assembled on carbon fibre composite structures and is designed for operation in the temperature range from -25 to + 25 degrees C. The mechanical stability of tracker components during physics operation was monitored with a few mu m 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 30 mu m. In addition, temperature variations were found to cause displacements of tracker structures of about 2 mu m/degrees C, which largely revert to their initial positions when the temperature is restored to its original value.
Language
English
Source (journal)
Journal of instrumentation. - Bristol, 2006, currens
Publication
Bristol : Institute of Physics , 2017
ISSN
1748-0221
DOI
10.1088/1748-0221/12/04/P04023
Volume/pages
12 (2017) , 39 p.
Article Reference
P04023
ISI
000405067800023
Medium
E-only publicatie
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identifier
Creation 17.08.2017
Last edited 09.10.2023
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