Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 41: Calorimeters 1

T 41.9: Vortrag

Dienstag, 22. März 2022, 18:15–18:30, T-H26

ATLAS Liquid Argon Calorimeter Readiness for LHC Run 3 — •Tom Kreße, Arno Straessner, and Rainer Hentges — Institut für Kern- und Teilchenphysik, Dresden, Deutschland

Liquid argon (LAr) sampling calorimeters are employed by ATLAS for all electromagnetic calorimetry in the pseudo-rapidity region |η| < 3.2, and for hadronic and forward calorimetry in the region from |η| = 1.5 to |η| = 4.9. After detector consolidation during a long shutdown, LHC Run 2 started in 2015 and about 150fb-1 of data at a center-of-mass energy of 13 TeV was recorded. Phase-I detector upgrades began after the end of Run 2. New trigger readout electronics of the ATLAS LAr Calorimeter have been developed. Installation began at the start of the LHC shutdown in 2019 and is expected to be completed in 2021. A commissioning campaign is underway in order to realise the capabilities of the new, higher granularity and higher precision level-1 trigger hardware in Run 3 data taking. This contribution will give an overview of the new trigger readout commissioning, including the first data taken of the recommissioned LAr system in the October 2021 Pilot run, as well as its preparations for Run 3 detector operation.