Performance of the ATLAS Trigger System in 2010

Details Performance of the ATLAS Trigger System in 2010 Performance of the ATLAS Trigger System in 2010

2011-10-07

arxiv.org/abs/1110.1530v2

Eur.Phys.J.C 72 (2012) 1849

Physics

High Energy Physics

High Energy Physics - Experiment

49 pages plus author list (62 pages total), 64 figures, 14 tables, final version to appear in European Physical Journal C

Scientific paper

10.1140/epjc/s10052-011-1849-1

Proton-proton collisions at sqrt{s} = 7 TeV and heavy ion collisions at sqrt{s_NN} = 2.76 TeV were produced by the LHC and recorded using the ATLAS experiment's trigger system in 2010. The LHC is designed with a maximum bunch crossing rate of 40 MHz and the ATLAS trigger system is designed to record approximately 200 of these per second. The trigger system selects events by rapidly identifying signatures of muon, electron, photon, tau lepton, jet, and B meson candidates, as well as using global event signatures, such as missing transverse energy. An overview of the ATLAS trigger system, the evolution of the system during 2010 and the performance of the trigger system components and selections based on the 2010 collision data are shown. A brief outline of plans for the trigger system in 2011 is presented

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