Speaker
Shima Shimizu
(Kobe University (JP))
Description
The ATLAS jet trigger is an important element of the event selection process,
providing data samples for studies of Standard Model physics and searches for new
physics at the LHC. The ATLAS jet trigger system has undergone substantial
modifications over the past few years of LHC operations, as experience developed
with triggering in a high luminosity and high event pileup environment. In particular,
the region-of-interest (ROI) based strategy has been replaced by a full scan of the
calorimeter data at the third trigger level, and by a full scan of the level-1 trigger input
at level-2 for some specific trigger chains. Hadronic calibration and cleaning
techniques are applied in order to provide improved performance and increased
stability in high luminosity data taking conditions. In this presentation we discuss the
implementation and operational aspects of the ATLAS jet trigger during 2011 and
2012 data taking periods at the LHC.
Author
Steven Robertson
(McGill)
