Abstract:The ATLAS experiment at the LHC will face the challenge of selecting interesting candidate events in proton-proton collisions at 14 TeV center of mass energy, while rejecting the enormous number of background events. The trigger system architecture is organized in three levels. From a bunch crossing rate of 40 MHz the First Level trigger, hardware implemented, will reduce this rate to around ∼75 kHz. Then the software based High Level Trigger (HLT), composed by the Second Level Trigger and the Event Filter red… Show more
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