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T: Fachverband Teilchenphysik

T 70: Electronics, Trigger, DAQ III

T 70.7: Vortrag

Donnerstag, 19. März 2026, 17:45–18:00, KH 00.023

Development of a Stand-Alone Drift-Tube-Based Muon Trigger for the ATLAS and CRESST Experiments — •Stefan Eder, Davide Cieri, Oliver Kortner, Sandra Kortner, Federica Petricca, Michele Mancuso, and Alexander Langenkämper — Max Planck Institute for Physics

The upcoming High-Luminosity LHC era will require substantially improved selectivity in the ATLAS first-level muon trigger system. To meet these demands, new FPGA-based trigger processor boards have been developed that, for the first time, incorporate precision tracking information from Monitored Drift Tube (MDT) chambers directly into the Level-0 trigger decision. Before operation in Run 4, the MDT detectors, their readout, and trigger processors must be commissioned using cosmic-ray muons. This requires a dedicated track-finding algorithm that relies solely on information from drift-tube detectors.

This presentation introduces a standalone drift-tube-based muon trigger algorithm designed for this purpose, along with its FPGA gateware implementation and expected performance. In addition to cosmic-ray commissioning, the newly developed standalone track reconstruction algorithm enables trigger decisions during ATLAS operation without input from fast trigger detectors. Beyond its application in ATLAS, the algorithm also opens the possibility of serving as a muon veto in the CRESST dark matter experiment by installing spare ATLAS MDT chambers around the cryogenic CRESST detector setup. The adaptation of the algorithm for this use case will also be discussed.

Keywords: FPGA gateware; ATLAS; CRESST; Trigger; Drift Detectors