Karlsruhe 2024 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 65: Trigger+DAQ 2

T 65.2: Vortrag

Mittwoch, 6. März 2024, 16:15–16:30, Geb. 30.23: 3/1

Commissioning of the Upgraded ATLAS Level-1 Jet Trigger — •Moritz Hesping, Anamika Aggarwal, Volker Büscher, Ralf Gugel, Christian Kahra, Emanuel Meuser, Niklas Schmitt, and Duc Bao Ta — Johannes Gutenberg Universität Mainz

For Run 3 of the LHC, the ATLAS level-1 calorimeter trigger (L1Calo) has received a major upgrade. An important part of this is the Jet Feature Extractor (jFEX). This system is responsible for the measurement of jets, tau leptons and forward electrons at level 1, and the calculation of the missing transverse energy and total energy of the event. It receives input from the calorimeters at a finer granularity than the Run 2 systems.

In this talk, results from the physics commissioning of the jFEX jet triggers are presented. This includes measurements of trigger efficiencies and rates, as well as optimization studies for the tuning of the system's parameters such as trigger thresholds and energy calibrations.

Keywords: L1Calo; jet trigger; electron trigger; tau trigger; MET trigger