Precision Muon Tracking at Future Hadron Colliders with sMDT Chambers

TL;DR

This paper evaluates small-diameter muon drift tube chambers for future high-energy colliders, demonstrating their high rate capability, precision, and suitability for large-scale muon detector upgrades.

Contribution

It presents the testing, optimization, and construction procedures for sMDT chambers, highlighting their readiness for high-luminosity collider environments.

Findings

sMDT chambers meet rate capability requirements at CERN tests

Chambers achieve better than 10 micrometers wire positioning precision

Design and construction are optimized for mass production and stability

Abstract

Small-diameter muon drift tube (sMDT) chambers are a cost-effective technology for high-precision muon tracking. The rate capability of the sMDT chambers has been extensively tested at the Gamma Irradiation Facility at CERN in view of expected rates at future high-energy hadron colliders. Results show that it fulfills the requirements over most of the acceptance of muon detectors. The optimization of the read-out electronics to further increase the rate capability of the detectors is discussed. Chambers of this type are under construction for upgrades of the muon spectrometer of the ATLAS detector at high LHC luminosities. Design and construction procedures have been optimized for mass production while providing a precision of better than 10 micrometers in the sense wire positions and the mechanical stability required to cover large areas.