Alignment of the CMS tracker with LHC and cosmic ray data
Name
The_CMS_collaboration_2014_J._Inst._9_P06009.pdf
Description
Published version
Size
2.86 MB
Format
Adobe PDF
Checksum (MD5)
e4a85257e3c8fc8aae04b727b039ec6a
Author(s)
Apyan, Aram
Barbieri, Richard Alexander
Bauer, Gerry P
Busza, Wit
Cali, Ivan Amos
Chan, M.
Di Matteo, Leonardo
Dutta, Valentina
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Date Issued
June 2014
Journal
Journal of Instrumentation
Publisher
IOP Publishing
Citation
Chatrchyan, S. et al. "Alignment of the CMS tracker with LHC and cosmic ray data." Journal of Instrumentation 9 (June 2014): P06009 © 2014 CERN for the benefit of the CMS collaboration
Version
Final published version
Abstract
The central component of the CMS detector is the largest silicon tracker ever built. The precise alignment of this complex device is a formidable challenge, and only achievable with a significant extension of the technologies routinely used for tracking detectors in the past. This article describes the full-scale alignment procedure as it is used during LHC operations. Among the specific features of the method are the simultaneous determination of up to 200 000 alignment parameters with tracks, the measurement of individual sensor curvature parameters, the control of systematic misalignment effects, and the implementation of the whole procedure in a multi-processor environment for high execution speed. Overall, the achieved statistical accuracy on the module alignment is found to be significantly better than 10μm.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Terms of Use
Creative Commons Attribution 3.0 unported license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1088/1748-0221/9/06/P06009
