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Performance of the ATLAS Trigger System in 2010

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Article number1849
<mark>Journal publication date</mark>01/2012
<mark>Journal</mark>European Physical Journal C: Particles and Fields
Issue number1
Volume72
Number of pages61
Publication StatusPublished
<mark>Original language</mark>English

Abstract

Proton–proton collisions at s√=7 TeV and heavy ion collisions at sNN−−−−√=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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This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.