Performance of the ATLAS Muon Drift-Tube Chambers at High Background   Rates and in Magnetic Fields
  The ATLAS muon spectrometer uses drift-tube chambers for precision tracking. The performance of these chambers in the presence of magnetic field and high radiation fluxes is studied in this article using test-beam data recorded in the Gamma Irradiation Facility at CERN. The measurements are compared to detailed predictions provided by the Garfield drift-chamber simulation programme. 
J.Dubbert, S.Horvat, F.Legger, O.Kortner, H.Kroha, R.Richter,   Ch.Valderanis, F.Rauscher, A.Staude
physics.ins-det hep-ex