Wuppertal 2015 – scientific programme

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T: Fachverband Teilchenphysik

T 84: Trigger 2

T 84.7: Talk

Thursday, March 12, 2015, 18:15–18:30, G.10.06 (HS 6)

Simulation of the new topological processor in the ATLAS first level trigger — Volker Büscher, Katharina Jakobi, Ulrich Schäfer, Jan Schäffer, Stefan Tapprogge, and •Markus Zinser — Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 7, 55099 Mainz

The LHC will start again in May 2015 with proton-proton collisions at a center of mass energy of √s=13 TeV. This results in an increased rate of collisions and a new approach is needed in order to keep high efficiencies for processes of interest at the first level trigger stage. A new trigger module for the first level trigger stage of the ATLAS experiment has been developed in order to achieve this. This new trigger module, the topological processor, is able to make trigger decisions based on topological observables, for example angular correlations of trigger objects from the ATLAS calorimeter and muon system.
This talk will concentrate on the validation of the trigger decision and read-out of the topological processor by using a bit-wise simulation of the module. The basic strategy how the hardware is validated and first results will be presented.