Speaker
Allen Irving Mincer
(New York University (US))
Description
The transverse momentum triggers of the ATLAS experiment at the CERN Large Hadron Collider (LHC) are designed to select collision events with non-interacting particles passing through the detector. Such events provide an interesting probe new physics interactions beyond the Standard Model, but also provide the basis for precise measurements of Standard Model parameters such as Higgs couplings. The transverse momentum used in the trigger system is calculated from calorimeter-based global energy sums and supplemented with information from the Muon detection system. The trigger was successfully operating during the first running period of the LHC. In 2015 the LHC will start up again at a higher centre-of-mass energy and increased luminosity, both making it challenging to improve on the run period one performance. In this talk a summary of the first run period performance will be presented, as well as a summary of the software and hardware-based improvements for the second run period.
A brief summary of the Run 1 performance studies will be presented, together with the Run 2 software and hardware-based improvements as well as some
initial results from the early days of Run 2 data-taking period.
Author
Allen Irving Mincer
(New York University (US))
