Author/Authors :
Meoni، نويسنده , , Evelin and Branchini، نويسنده , , Paolo and Di Luise، نويسنده , , Silvestro and Graziani، نويسنده , , Enrico and La Rotonda، نويسنده , , Laura and Mazzotta، نويسنده , , Concetta and Morello، نويسنده , , Gianfranco and Passeri، نويسنده , , Antonio and Petrucci، نويسنده , , Fabrizio and Policicchio، نويسنده , , Antonio and Salvatore، نويسنده , , Daniela and Schioppa، نويسنده , , Marco and Tonazzo، نويسنده , , Alessandra، نويسنده ,
Abstract :
MDT chambers, the precision tracking system of the ATLAS muon spectrometer, have to operate for 10 years in the harsh LHC background environment mainly due to low energy photons and neutrons. The expected overall maximum count rate is 500 Hz / cm 2 . Moreover the upgrades for S-LHC will involve fluxes ten times higher than that at LHC. To study the behavior of MDT chambers under massive irradiation of gammas and neutrons at level of S-LHC, three extensive tests were performed at the ENEA-Casaccia Research Centre Facilities, irradiating several test detectors. The results about the drift properties, gas gain and tracking performances, both at high rates and after massive irradiation, are given.
