Erlangen 2026 – scientific programme

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T: Fachverband Teilchenphysik

T 27: Muon Detectors

T 27.7: Talk

Tuesday, March 17, 2026, 17:45–18:00, KH 00.023

Development of new measurement methods of particle track dE/dx and time slew corrections to drift times for the ATLAS MDT detectors — •Jens Ledermann, Thomas Trefzger, Raimund Ströhmer, Gia Khoriauli, and Georgios Lamprinoudis — Julius-Maximilians-Universität Würzburg

The Monitored Drift Tube detectors (MDT) of the ATLAS Muon Spectrometer will be equipped with a new front-end electronics system after the ATLAS Phase-2 upgrade for an operation at the HL-LHC. The new 24-channel front-end mezzanine cards are designed for a precise time measurement of MDT hits at the expected HL-LHC particle rates. Comprehensive quality assessment and control tests of the mezzanine cards are performed using the tester hardware tool developed at the University of Würzburg. The test data of the mezzanine cards can be used for a calibration of a measurement of MDT ionisation charge and hence, dE/dx of charged tracks for a particle identification. Besides that, the time slew corrections for measurements of MDT hit drift times can be derived using the test data. Corresponding new methods are currently being developed. The development progress and the application of the new methods using cosmic data collected at the MDT Cosmic Ray Facility at the LMU Munich are presented in this work.

Keywords: ATLAS experiment; Muon Spectrometer; MDT detectors; Particle identification; Particle tracking