“School of Particles And Accelerator”

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Paper   IPM / Particles And Accelerator / 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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