Reconstruction of Primary Vertices at the ATLAS Experiment in Run 1 Proton–Proton Collisions at the LHC

During 2015 the ATLAS experiment recorded 3.8 fb⁻¹ of proton–proton collision data at a centre-of-mass energy of 13 TeV. The ATLAS trigger system is a crucial component of the experiment, responsible for selecting events of interest at a recording rate of approximately 1 kHz from up to 40 MHz of collisions. This paper presents a short overview of the changes to the trigger and data acquisition systems during the first long shutdown of the LHC and shows the performance of the trigger system and its components based on the 2015 proton–proton collision data.

Proton-proton interactions, Large Hadron Collider (France and Switzerland), Transverse momentum, Muons, Jets (Nuclear physics), Luminescence, Calorimeters, Electrons, Vertex detectors
CC BY 4.0 (Attribution), ©2017 CERN, for the ATLAS Collaboration