Heidelberg 2022 – scientific programme

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T: Fachverband Teilchenphysik

T 69: DAQ and Trigger 3

T 69.3: Talk

Wednesday, March 23, 2022, 16:45–17:00, T-H28

The ATLAS Forward Feature Extractor for the Phase-II trigger upgrade — •Adrian Alvarez Fernandez, Julian Blumenthal, Stefan Tapprogge, Ulrich Schaefer, and Bruno Bauss — Institut für Physik, Johannes Gutenberg Universität

The ATLAS detector will undergo many upgrades to account for the more challenging running conditions of the High Luminosity LHC. Some of these Phase-II upgrades will be focused on improving the trigger system, a crucial part to deal with the higher data rates and pile-up. Phase-I upgrades for Run 3 introduced the Feature EXtractors for a more refined processing of the calorimeter information and to better discriminate between jets, photons, electrons and taus. A Forward Feature EXtractor (fFEX) will be developed for the HL-LHC that will provide more flexible algorithms for the objects in the forward region (|η|>2.5 for electrons and photons and |η|>3.2 for jets). In contrast to the first level calorimeter trigger before HL-LHC, this new system will have access to the full detailed calorimeter granularity. The status of the preliminary design work on the fFEX will be presented and possible technology options will be discussed.