Author/Authors :
Bencivenni، نويسنده , , G and Bonivento، نويسنده , , W and Bosio، نويسنده , , C and Cardini، نويسنده , , A and Felici، نويسنده , , G and Lai، نويسنده , , A and Murtas، نويسنده , , F and Pinci، نويسنده , , D and Saitta، نويسنده , , B and Satta، نويسنده , , L and Valente، نويسنده , , P، نويسنده ,
Abstract :
Triple-GEM detectors with pad readout has been tested at the CERN PS T11 Hadron Beam Facility. A time distribution RMS of 6 ns has been obtained with an Ar/CO2/CF4 (60/20/20) gas mixture, achieving a substantial improvement with respect to Ar/CO2 (70/30), where an RMS of 10 ns was obtained. This resulted in an efficiency of about 96% in a 25 ns time-window (and a total efficiency of 99.7%), suggesting that these detectors could be interesting devices for triggering at the typical LHC interaction rate.
Keywords :
High rate triggering , GEM , Gas electron multiplier , Tetrafluoromethane
