IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
The ATLAS trigger - high-level trigger commissioning and operation during early data taking
Autor/es:
GONCALO R, DOVA, M.T ET AL
Lugar:
Manchester UK
Reunión:
Conferencia; International Europhysics Conference on High Energy Physics; 2007
Resumen:
The ATLAS experiment is one of the two general-purpose experiments due
to start operation soon at the Large Hadron Collider (LHC). The LHC
will collide protons at a centre of mass energy of 14~TeV, with a
bunch-crossing rate of 40~MHz. The ATLAS three-level trigger will
reduce this input rate to match the foreseen offline storage capability
of 100-200~Hz. This paper gives an overview of the ATLAS High Level
Trigger focusing on the system design and its innovative features. We
then present the ATLAS trigger strategy for the initial phase of LHC
exploitation. Finally, we report on the valuable experience acquired
through in-situ commissioning of the system where simulated events were
used to exercise the trigger chain. In particular we show critical
quantities such as event processing times, measured in a large-scale
HLT farm using a complex trigger menu.