Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 90: Muon detectors

T 90.9: Talk

Thursday, March 18, 2021, 18:05–18:20, To

Construction of new small diameter Monitored Drift Tube (sMDT) chambers for the ATLAS muon spectrometer at the HL-LHC — •Verena Walbrecht, Marian Rendel, Patrick Rieck, Oliver Kortner, Sandra Kortner, and Hubert Kroha — Max-Planck-Institut für Physik

In order to improve the muon trigger efficiency of the ATLAS muon spectrometer for the high-luminosity upgrade of the Large Hadron Collider (HL-LHC), the precision tracking Monitored Drift Tube (MDT) chambers in the inner barrel layer will be replaced by integrated stations combining new thin-gap RPC trigger chambers with new small-diameter Monitored Drift Tube (sMDT) chambers. The sMDT chambers are designed to meet the very tight space constraints in the detector and to provide an order of magnitude higher background rate capability compared to the current detectors.
In this talk, the results of measurements of the geometry, the tests, and the performance of the chambers are discussed.