Commissioning ATLAS Trigger

Details Commissioning ATLAS Trigger Commissioning ATLAS Trigger

2008-10-20

arxiv.org/abs/0810.3269v1

Physics

Instrumentation and Detectors

ICHEP08

Scientific paper

The ATLAS experiment at the Large Hadron Collider (LHC) will face the challenge of efficiently selecting interesting candidate events in $pp$ collisions at 14 TeV centre-of-mass energy, whilst rejecting the enormous number of background events. Therefore it is equipped with a three level trigger system. The first level is is hardware based and uses coarse granularity calorimeter information and fast readout muon chambers. The second and third level triggers, which are software based, will need to reduce the first level trigger output rate of ~ 75 kHz to ~ 200 Hz written out to mass storage. The progress in commissioning of this system will be reviewed in this paper.

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