Physics of Particles and Nuclei

, Volume 48, Issue 5, pp 789–792 | Cite as

Performance of the CMS ME1/1 muon station

The International Session-Conference of SNP PSD RAS “Physics of Fundamental Interactions” April 12–15, 2016, Dubna, Russia Session 1—Physics at Colliders


ME1/1 is a part of the endcap muon system of the CMS detector at the LHC (CERN). It plays the key role in the muon detection providing muon track matching with the CMS inner tracker. ME1/1 should provide high spatial and time resolution. The station is composed of 72 6-layer cathode strip chambers. The chambers were designed and produced at JINR (Dubna). ME1/1 is the innermost muon detector and operates in the strong axial magnetic field (B = 3 T) in the presence of high background of secondary particles. The paper presents the chamber design features and the ME1/1 station characteristics in the CMS runs with proton-proton collisions.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    CMS Collaboration, “The CMS experiment at the CERN LHC,” J. Instrum. 3, S08004 (2008).Google Scholar
  2. 2.
    CMS Collaboration, “The Compact Muon Solenoid: Technical Proposal,” CERN/LHCC 94-38, LHCC/P1. 15 December 1994.Google Scholar
  3. 3.
    CMS Collaboration, “The Muon Project: Technical Design Report,” CERN/LHCC 97-32, CMS TDR 3. 15 December 1997.Google Scholar
  4. 4.
    Yu. V. Erchov et al, “Cathode strip chamber for CMS ME1/1 endcap muon station,” Phys. Part. Nucl. Lett. 3(3), 183–187 (2006).CrossRefGoogle Scholar
  5. 5.
    S. A. Movchan and P. V. Moissenz, “The method of anode wire incident angle calculation of the first muon station (ME1/1) of the Compact Muon Solenoid set-up (CMS),” Phys. Part. Nucl. Lett. 4(107), 82–92 (2001).Google Scholar
  6. 6.
    M. Huhtinen, “Optimization of the CMS forward shielding,” CMS-NOTE-2000/068, CERN, 2000.Google Scholar
  7. 7.
    A. Sannikov and A. Uzunian, “Event spectra from neutron background in the ME1/1 chamber on the CMS,” CMS-NOTE-2001/018. CERN, 2001.Google Scholar
  8. 8.
    CMS Collaboration, “Performance of CMS muon reconstruction in pp collision events at √s = 7 TeV,” CMS-MUO-10-004, CERN-PH-EP-2012-173; J. Instrum. 7, P10002 (2012).Google Scholar
  9. 9.
    Gatti E. et al., “Optimum geometry for strip cathodes or grids in MWPC for avalanche localization along the anode wires,” Nucl. Instrum. Meth. 163, 83–92 (1979).ADSCrossRefGoogle Scholar
  10. 10.
    CMS Collaboration, “The performance of the CMS muon detector in proton-proton collisions at √s = 7 TeV at the LHC,” CMS-MUO-11-001, CERN-PH-EP-2013-072; J. Instrum. 8, P11002 (2013).Google Scholar
  11. 11.
    CMS Collaboration, “Technical Proposal for the Upgrade of the CMS Detector through 2020,” CERN/LHCC 2011-06 CMS UG-TP-1.Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  1. 1.Joint Institute for Nuclear ResearchDubna, Moscow oblastRussia

Personalised recommendations