May 24 – 28, 2021
America/Vancouver timezone

Upgrade of the ATLAS Level-1 Endcap Muon Trigger System for LHC Run-3

May 27, 2021, 5:00 AM
Poster Readout: Trigger and DAQ Posters: Trigger and DAQ


Yoshiaki Tsujikawa (Kyoto University (JP))


LHC is expected to increase its instantaneous luminosity to 2x10^34 cm^-2s^-1 in Run3. In order to cope with the high luminosity, upgrade of the trigger system is ongoing. The level-1 Endcap Muon trigger system reconstructs muons with high transverse momentum by combining data from Thin Gap Chambers (TGCs) and inner station detectors. In the upgrade, a new detector called New Small Wheel (NSW) is being installed in the inner station region. Finer track information from NSW is used as a part of the muon trigger logic to improve the trigger performance. A new trigger board, Sector Logic (SL), has been developed to handle data from TGC and NSW. SL has a modern FPGA to make use of Multi-Gigabit transceiver technology, used to receive data from NSW. Status of the commissioning of the ATLAS Level-1 Endcap Muon trigger system is presented, as well as implementation of the trigger logic as a firmware and its performance.

TIPP2020 abstract resubmission? Yes, this would have been presented at TIPP2020.

Primary authors

Andrei Kazarov (NRC Kurchatov Institute PNPI (RU)) Yoshiaki Tsujikawa (Kyoto University (JP))

Presentation materials