Author/Authors :
Deile، نويسنده , , M. and Dubbert، نويسنده , , J. and Horvat، نويسنده , , S. and Kortner، نويسنده , , O. and Kroha، نويسنده , , H. and Manz، نويسنده , , A. and Mohrdieck-Mِck، نويسنده , , S. and Rauscher، نويسنده , , F. and Richter، نويسنده , , R. and Staude، نويسنده , , A. H. Stiller، نويسنده , , W.، نويسنده ,
Abstract :
The resolution and efficiency of a precision drift-tube chamber for the ATLAS muon spectrometer with final read-out electronics was tested at the Gamma Irradiation Facility at CERN in a 100 GeV muon beam at photon irradiation rates of up to 990 Hz / cm 2 , which corresponds to twice the highest background rate expected in ATLAS. A silicon strip detector telescope served as external reference in the beam. The pulse-height measurement of the read-out electronics was used to perform time-slewing corrections, which lead to an improvement of the average drift-tube resolution from 104 to 82 μ m without irradiation, and from 128 to 108 μ m at the maximum expected rate. The measured drift-tube efficiency agrees with the expectation from the dead time of the read-out electronics up to the maximum expected rate.
