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  • “School of Particles”

     
    Paper   IPM / Particles / 11396
       School of Particles and Accelerator
      Title: Performance of the CMS Level-1 Trigger during Commissioning with Cosmic Ray Muons
      Author(s):
    1 . Hessamaddin Arfaei
    2 . Hamed Bakhshian
    3 . Ali Fahim
    4 . Abideh jafari
    5 . Mojtaba Mohammadi Najafabadi
    6 . Ahmad Moshaii
    7 . Saeid Paktinat
    8 . Shahin Rouhani
    9 . Batool Safarzadeh
    10 . Maryam Zeinali
      Status: Published
      Journal: JINST
      Year: 2010
      Pages: 49
      Supported by: IPM
      Abstract:
    The CMS Level-1 trigger was used to select cosmic ray muons and LHC beam events during data-taking runs in 2008, and to estimate the level of detector noise. This paper describes the trigger components used, the algorithms that were executed, and the trigger synchronisation. Using data from extended cosmic ray runs, the muon, electron/photon, and jet triggers have been validated, and their performance evaluated. Efficiencies were found to be high, resolutions were found to be good, and rates as expected.

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