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Title: Alignment of the CMS silicon tracker during commissioning with cosmic rays

Journal Article · · Journal of Instrumentation
 [1]
  1. Yerevan Physics Institute (Armenia); CMS Collaboration. et al.
+ Show Author Affiliations

The CMS silicon tracker, consisting of 1440 silicon pixel and 15148 silicon strip detector modules, has been aligned using more than three million cosmic ray charged particles, with additional information from optical surveys. The positions of the modules were determined with respect to cosmic ray trajectories to a precision of 3-4 microns RMS in the barrel and 3-14 microns RMS in the endcap in the most sensitive coordinate. In this work, the results have been validated by several methods, including the laser alignment system, and compared with predictions obtained from simulation. Correlated systematic effects have been investigated. The track parameter resolutions obtained with this alignment are close to the design performance.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
CMS Collaboration
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1151592
Report Number(s):
CMS-CFT-09-003; FERMILAB-PUB-10-166-CMS; arXiv:0910.2505; oai:inspirehep.net:833863
Journal Information:
Journal of Instrumentation, Vol. 5, Issue 03; ISSN 1748-0221
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 77 works
Citation information provided by
Web of Science

References (5)

LHC Machine journal August 2008
CMS silicon tracker alignment strategy with the Millepede II algorithm journal September 2008
Software alignment for tracking detectors journal October 2006
Local alignment of the BaBar Silicon Vertex Tracking detector
  • Brown, D. N.; Gritsan, A. V.; Guo, Z. J.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 603, Issue 3 https://doi.org/10.1016/j.nima.2009.02.001
journal May 2009
Stand-alone Cosmic Muon Reconstruction Before Installation of the CMS Silicon Strip Tracker text January 2009

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Upsilon production cross section in p p collisions at s = 7     TeV journal June 2011
Prompt and non-prompt J/ψ production in pp collisions at $\sqrt{s} = 7$ TeV journal March 2011
CMS tracking performance results from early LHC operation text January 2010
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Measurement of the weak mixing angle with the Drell-Yan process in proton-proton collisions at the LHC text January 2011
Charged particle transverse momentum spectra in pp collisions at √s=0.9 and 7 TeV text January 2011
Prompt and non-prompt J/psi production in pp collisions at sqrt(s) = 7 TeV text January 2010
Measurement of the properties of a Higgs boson in the four-lepton final state text January 2013

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Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Large detector systems for particle and astroparticle physics
Particle tracking detectors (Solid-state detectors)