Test of the first BIL tracking chamber for the ATLAS muon spectrometer

• DOI: 10.1016/j.nima.2003.11.425
• Publication Date: 2004-02-06T10:17:37Z
• Authors: G. Avolio; P. Bagnaia; A. Baroncelli; M. Beretta; C. Bini; P. Branchini; M. Cirilli; M. Iodice; A. Lanza; L. La Rotonda; E. Meoni; D. Orestano; E. Pasqualucci; F. Petrucci; L. Pontecorvo
• Keywords: Discriminator; Tracking (education); ATLAS experiment; Drift tube

Abstract The first Barrel Inner Large chamber of the Monitored Drift Tube (MDT) tracking detector for the muon spectrometer of the ATLAS experiment has been tested with a high-energy muon beam. After a description of the MDT characteristics, we present the test beam experimental set-up, the data analysis techniques and discuss the results. The chamber was operated with a Ar(93%)–CO 2 (7%) gas mixture at 3-bar pressure. The performance studies include the chamber calibration, the single-tube resolution, efficiency and electronic noise, and their behaviour as a function of the high-voltage setting and discriminator threshold.