The Phase-1 Upgrade of the ATLAS Level-1 Endcap Muon Trigger

  • Shunichi Akatsuka
  • on behalf of the ATLAS Collaboration
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 212)


The Level-1 muon trigger for the ATLAS experiment identifies muons with high transverse momentum. Under the high luminosity condition in LHC Run 3, more powerful trigger system is needed to reject the backgrounds. New trigger processor board for Run 3 has been produced to achieve the required performance, by combining information from five different detectors. The performance of the new board and the readout system has been confirmed by a beam test. The new algorithms to make use of the new detectors have been developed, and are tested by MC simulation. With the new algorithms, the trigger rate is estimated to become lower than the required rate in Run 3.


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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Shunichi Akatsuka
    • 1
  • on behalf of the ATLAS Collaboration
  1. 1.Kyoto UniversityKyotoJapan

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