Jul 6 – 13, 2022
Bologna, Italy
Europe/Rome timezone

Level 1 Muon Triggers for the CMS Experiment at the HL-LHC

Jul 8, 2022, 7:05 PM
1h 25m
Bologna, Italy

Bologna, Italy

Palazzo della Cultura e dei Congressi
Poster Operation, Performance and Upgrade (Incl. HL-LHC) of Present Detectors Poster Session


Marcin Konecki (University of Warsaw (PL)) Marianna Głażewska (Faculty of Physics, University of Warsaw)


In view of the HL-LHC, the Phase-2 CMS upgrade will replace the entire trigger and data acquisition system. The detector readout electronics will be upgraded to allow a maximum L1A rate of 750 kHz, and a latency of 12.5 µs. The upgraded system will be entirely running on commercial FPGA processors and should greatly extend the capabilities of the current system, being able to maintain trigger thresholds despite the harsh environment as well as trigger on more exotic signatures such as long-lived particles to extend the physics coverage. The muon trigger should be able to identify muon tracks in the experiment and measure their momenta and other parameters for use in the global trigger menu. In addition to the muon detector upgrades that include improved electronics and new sub-detectors, the presence of a L1 track finder in CMS will bring some of the offline muon reconstruction capability to the L1 trigger, delivering unprecedented reconstruction and identification performance. With this contribution, we review the current status of the design of highly efficient muon trigger, its architecture, and the foreseen muon reconstruction and identification algorithms.

In-person participation Yes

Primary authors

Marcin Konecki (University of Warsaw (PL)) Marianna Głażewska (Faculty of Physics, University of Warsaw)

Presentation materials