Description
The ATLAS Muon Spectrometer, the largest muon system ever built at colliders, now
comprises both legacy gaseous detectors—Monitored Drift Tubes (MDT), Thin Gap
Chambers (TGC), and Resistive Plate Chambers (RPC)—which have been in operation
for over 15 years, as well as newer technologies like Micromegas and small-strip TGCs
in the NSW. These new systems are now in stable operation following an extensive
phase of construction and commissioning, providing enhanced muon tracking and
trigger capabilities.
This presentation will cover the status and performance of the Muon system, focusing on the stability of the legacy detectors over time, their ability to handle increasing luminosity and associated irradiation levels, and studies on detector ageing. Emphasis
will be placed on the NSW upgrade, including the strategies adopted for simulation, alignment, track reconstruction, and trigger.
