Choisissez le fuseau horaire
Le fuseau horaire de votre profil:
Description
The ATLAS Muon barrel trigger is operational since 2008 and has allowed to collect several hundreds millions of cosmic muons for the whole detector commissioning.
The harsh conditions, present in ATLAS at LHC High Luminosity, pose stringent requirements on the muon trigger system. The detector technology should have an excellent time resolution (~5 ns) and be able to measure spatial coordinates, for muon track reconstruction, at the millimeter level. Moreover, the radiation background of neutrons and gammas, which will be present in the ATLAS cavern at high luminosity, could generate fake muon triggers.
These requirements have driven the choice of the detector technology and of the trigger logicimplementation, and I will show how the Resistive Plat Chambers could optimally fullfil the goal. I will present a general overview, from the R&D on the detector technology to the final trigger logic implementation and commissioning of the system.
Results will be presented with a particular emphasis on the time calibration with cosmic rays data and with the collision events observed in the first LHC runs in 2009.
