Large-Scale Production of Monitored Drift Tube Chambers for the ATLAS Muon Spectrometer

TL;DR

This paper reports on the large-scale production and assembly of precision drift tube chambers for the ATLAS muon spectrometer, demonstrating that the chambers meet strict mechanical and alignment accuracy requirements.

Contribution

It presents the successful large-scale manufacturing process and quality verification of drift tube chambers with high positional accuracy for the ATLAS detector.

Findings

70% of chambers assembled successfully

Mechanical precision requirements are met

Wire positioning accuracy better than 20 microns

Abstract

Precision drift tube chambers with a sense wire positioning accuracy of better than 20 microns are under construction for the ATLAS muon spectrometer. 70% of the 88 large chambers for the outermost layer of the central part of the spectrometer have been assembled. Measurements during chamber construction of the positions of the sense wires and of the sensors for the optical alignment monitoring system demonstrate that the requirements for the mechanical precision of the chambers are fulfilled.