Construction and Test of New Precision Drift-Tube Chambers for Upgrades of the ATLAS Muon Spectrometer in 2016/17

摘要

Small-diameter Muon Drift Tube (sMDT) chambers have been developed for theATLAS muon detector upgrade. They possess an improved rate capability and amore compact design with respect to the existing chambers, which allows toequip detector regions uninstrument at present. The chamber assembly methodshave been optimized for mass production, while the sense wire positioningaccuracy is improved to below ten microns. The chambers will be ready forinstallation in the winter shutdown 2016/17 of the Large Hadron Collider. Thedesign and construction of the new sMDT chambers for ATLAS will be discussed aswell as measurements of their precision and performance.