Performance of the ATLAS Trigger System in 2010

G. Aad, Mogens Dam, Jørgen Beck Hansen, Peter Henrik Hansen, John Renner Hansen, Jørn Dines Hansen, Morten Dam Jørgensen, Simon Johann Franz Heisterkamp, Sascha Mehlhase, Esben Bryndt Klinkby, Björn Stefan Nilsson, Nele Maria Philomena Boelaert, Troels Christian Petersen, Stefania Xella

245 Citations (Scopus)

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.

Original languageEnglish
JournalEuropean Physical Journal C
Volume72
Issue number1
Pages (from-to)1849
Number of pages49
ISSN1434-6044
DOIs
Publication statusPublished - 3 Jan 2012

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