Evolution and performance of electron and photon triggers in ATLAS in the year 2011

Author

Solovyev, Vladimir

Author_Institution

Petersburg Nucl. Phys. Inst., St. Petersburg, Russia

fYear

2012

fDate

9-15 June 2012

Firstpage

1

Lastpage

5

Abstract

Electron and photon triggers are used for signal selection in a wide variety of ATLAS physics analyses. Further dedicated triggers are provided for the collection of J/ψ →e⁺e^-, W→ ev and QCD background samples for calibration, efficiency and fake rate measurements. In the 2011 proton-proton data-taking period, the increasing luminosity and pile-up conditions at the LHC demanded the use of progressively higher energy thresholds and tighter selections to control the trigger rates. This proceedings summarize the evolution and performance of ATLAS electron and photon triggers used in 2011 data-taking.

Keywords

W bosons; electron detection; high-energy elementary particle interactions; intermediate boson decay; meson leptonic decay; nuclear electronics; position sensitive particle detectors; proton-proton inclusive interactions; psi mesons; quantum chromodynamics; trigger circuits; ATLAS; J/psi decay into electron+positron; LHC; QCD background samples; W decay into electron+neutrino; electron trigger performance; fake rate measurements; high energy thresholds; luminosity conditions; photon trigger performance; pile-up conditions; proton+proton data; trigger rates; Collaboration; Detectors; Estimation; Large Hadron Collider; Photonics; Physics; Probes;

fLanguage

English

Publisher

ieee

Conference_Titel

Real Time Conference (RT), 2012 18th IEEE-NPSS

Conference_Location

Berkeley, CA

Print_ISBN

978-1-4673-1082-6

Type

conf

DOI

10.1109/RTC.2012.6418203

Filename

6418203