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Aligning the CMS muon chambers with the muon alignment system during an extended cosmic ray run

Apresyan, A. and Bornheim, A. and Bunn, J. and Chiorboli, M. and Gataullin, M. and Kcira, D. and Litvine, V. and Ma, Y. and Newman, H. B. and Rogan, C. and Timciuc, V. and Veverka, J. and Wilkinson, R. and Yang, Y. and Zhang, L. and Zhu, K. and Zhu, R. Y. (2010) Aligning the CMS muon chambers with the muon alignment system during an extended cosmic ray run. Journal of Instrumentation, 5 . Art. No. T03019. ISSN 1748-0221. http://resolver.caltech.edu/CaltechAUTHORS:20110131-132113523

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Abstract

The alignment system for the muon spectrometer of the CMS detector comprises three independent subsystems of optical and analog position sensors. It aligns muon chambers with respect to each other and to the central silicon tracker. System commissioning at full magnetic field began in 2008 during an extended cosmic ray run. The system succeeded in tracking muon detector movements of up to 18mm and rotations of several milliradians under magnetic forces. Depending on coordinate and subsystem, the system achieved chamber alignment precisions of 140–350 µm and 30–200 µrad, close to the precision requirements of the experiment. Systematic errors on absolute positions are estimated to be 340–590 µm based on comparisons with independent photogrammetry measurements.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1088/1748-0221/5/03/T03019DOIUNSPECIFIED
http://iopscience.iop.org/1748-0221/5/03/T03019/PublisherUNSPECIFIED
http://arxiv.org/abs/0911.4770arXivUNSPECIFIED
Additional Information:© 2010 IOP Publishing Ltd and SISSA. Received: IOP Publishing Ltd and SISSA; Accepted: January 21, 2010; Published: March 19, 2010. We thank the technical and administrative staff at CERN and other CMS Institutes, and acknowledge support from: FMSR (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); Academy of Sciences and NICPB (Estonia); Academy of Finland, ME, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF (Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); PAEC (Pakistan); SCSR (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MST and MAE (Russia); MSTDS (Serbia); MICINN and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF (USA). Individuals have received support from the Marie-Curie IEF program (European Union); the Leventis Foundation; the A. P. Sloan Foundation; and the Alexander von Humboldt Foundation.
Funders:
Funding AgencyGrant Number
FMSR (Austria)UNSPECIFIED
FNRS (Belgium)UNSPECIFIED
CNPq (Brazil)UNSPECIFIED
MES (Bulgaria)UNSPECIFIED
CERN (China)UNSPECIFIED
CAS (China)UNSPECIFIED
COLCIEN-CIAS (Colombia) UNSPECIFIED
MSES (Croatia)UNSPECIFIED
RPF (Cyprus) UNSPECIFIED
Academy of Sciences (Estonia)UNSPECIFIED
Academy of Finland (Finland) UNSPECIFIED
CEA (France)UNSPECIFIED
BMBF (Germany)UNSPECIFIED
GSRT (Greece)UNSPECIFIED
OTKA (Hungary)UNSPECIFIED
DAE (India)UNSPECIFIED
IPM (Iran)UNSPECIFIED
SFI (Ireland)UNSPECIFIED
INFN (Italy)UNSPECIFIED
NRF (Korea)UNSPECIFIED
LAS (Lithuania)UNSPECIFIED
CINVESTAV (Mexico)UNSPECIFIED
PAEC (Pakistan)UNSPECIFIED
SCSR (Poland)UNSPECIFIED
FCT (Portugal)UNSPECIFIED
JINR (Armenia) UNSPECIFIED
MST (Russia)UNSPECIFIED
MSTDS (Serbia)UNSPECIFIED
MICINN (Spain)UNSPECIFIED
Swiss Funding Agencies (Switzerland)UNSPECIFIED
NSC (Taipei)UNSPECIFIED
TUBITAK (Turkey)UNSPECIFIED
STFC (United Kingdom)UNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
European UnionUNSPECIFIED
Leventis Foundation UNSPECIFIED
A. P. Sloan FoundationUNSPECIFIED
Alexander von Humboldt FoundationUNSPECIFIED
FWO (Belgium)UNSPECIFIED
CAPES (Brazil)UNSPECIFIED
FAPERJ (Brazil)UNSPECIFIED
FAPESP (Brazil)UNSPECIFIED
MoST (China)UNSPECIFIED
NSFC (China)UNSPECIFIED
NICPB (Estonia)UNSPECIFIED
MEUNSPECIFIED
HIP (Finland)UNSPECIFIED
CNRS/IN2P3 (France)UNSPECIFIED
DFG (Germany)UNSPECIFIED
HGF (Germany)UNSPECIFIED
NKTH (Hungary)UNSPECIFIED
DST (India)UNSPECIFIED
CONACyT (Mexico)UNSPECIFIED
SEP (Mexico)UNSPECIFIED
UASLP-FAI (Mexico)UNSPECIFIED
JINR (Belarus) UNSPECIFIED
JINR (Georgia) UNSPECIFIED
JINR (Ukraine) UNSPECIFIED
JINR (Uzbekistan) UNSPECIFIED
MAE (Russia)UNSPECIFIED
CPAN (Spain)UNSPECIFIED
TAEK (Turkey)UNSPECIFIED
NSFUNSPECIFIED
Subject Keywords:Muon spectrometers; Large detector systems for particle and astroparticle physics
Classification Code:PACS: 29.40.Gx; 95.30.Cq; 95.55.Vj; 29.30.-h; 96.50.sb; 29.40.Cs
Record Number:CaltechAUTHORS:20110131-132113523
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20110131-132113523
Official Citation:CMS Collaboration 2010 JINST 5 T03019 doi: 10.1088/1748-0221/5/03/T03019
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21939
Collection:CaltechAUTHORS
Deposited By: Benjamin Perez
Deposited On:01 Feb 2011 15:58
Last Modified:25 Feb 2013 22:14

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