Operational experience with the CMS pixel detector in LHC Run II

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1 Citation (Scopus)


The CMS pixel detector was repaired successfully, calibrated and commissioned for the second run of Large Hadron Collider during the first long shutdown between 2013 and 2015. The replaced pixel modules were calibrated separately and show the expected behavior of an un-irradiated detector. In 2015, the system performed very well with an even improved spatial resolution compared to 2012. During this time, the operational team faced various challenges including the loss of a sector in one half shell which was only partially recovered. In 2016, the detector is expected to withstand instantaneous luminosities beyond the design limits and will need a combined effort of both online and offline teams in order to provide the high quality data that is required to reach the physics goals of CMS. We present the operational experience gained during the second run of the LHC and show the latest performance results of the CMS pixel detector.

Original languageEnglish
Article numberC12057
JournalJournal of Instrumentation
Issue number12
Publication statusPublished - Dec 21 2016


  • Detector alignment and calibration methods (lasers, sources, particle-beams); Performance of High Energy Physics Detectors
  • Pixelated detectors and associated VLSI electronics

ASJC Scopus subject areas

  • Mathematical Physics
  • Instrumentation

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