SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 23: Gas-Detectors / Muon MDT

T 23.5: Vortrag

Montag, 20. März 2023, 17:30–17:45, WIL/C207

Construction of new small-diameter Monitored Drift Tube (sMDT) chambers for the HL-LHC upgrade of the ATLAS Muonspectrometer — •Alice Reed, Daniel Buchin, Marian Rendel, Patrick Rieck, Elena Voevodina, Oliver Kortner, and Hubert Kroha — Max Planck Institut für Physik (Werner-Heisenberg-Institut), München

In order to improve the muon trigger efficiency and the rate capability of the ATLAS muon detectors for operation at the high-luminosity upgrade of the Large Hadron Collider (HL-LHC), the Monitored Drift Tube (MDT) chambers in the inner barrel layer of the ATLAS Muon Spectrometer will be replaced by small-diameter Muon Drift Tube (sMDT) chambers integrated with new thin-gap RPC trigger chambers. The sMDT chambers fit, together with the RPCs, into the very tight available space and provide an order of magnitude higher background rate capability compared to the current detectors.

The sMDT chambers have been in serial production since January 2021. In this talk, the steps for the drift tube production and chamber construction will be presented, followed by a discussion of the cosmic muon tests used for the final chamber certification.