Construction and test of monitored drift tube for the muon spectrometer of ATLAS experiment

ATLAS is one of the two general purpose experiments being built for the Large Hadron Collider at CERN. Its muon spectrometer consists of very high precision chambers made of drift tubes (MDT: monitored drift tubes). Up to now more than 5000 MDTs have been constructed and tested at the University of Calabria for ATLAS BIL chambers of the muon detector. This work reports the critical MDT assembly techniques in detail, including the automatic electronics system and DAQ system. The extensive tests performed on individual drift tubes and the first results and experience are also reported.