Studies of track reconstruction performance in the ATLAS Event Filter for the HL-LHC

by Marco Aparo

Wednesday Jun 10, 2026, 1:00 PM → 2:00 PM Europe/Madrid

IFAE Seminar Room (In-person)

The instantaneous luminosity at the High-Luminosity LHC (HL-LHC) will reach unprecedented levels, boosting the physics reach at the LHC. To cope with the resulting challenging pile-up condition and fully exploit the new high-granularity Inner Tracker (ITk), a major upgrade of the ATLAS Trigger and Data Acquisition (TDAQ) system is ongoing, with track reconstruction in the Event Filter being a critical component. Achieving a good tracking performance while maintaining sustainable trigger rates is therefore crucial to ensure a successful physics program at HL-LHC. This talk will give an overview on how tracking is generally performed in the ATLAS experiment, and then focuses on the remarkable tracking performance achieved across the different proposed technology choices for the Event Filter farm, exploring possible integrations of CPU cores with GPU or FPGA accelerators at different stages of the tracking workflow.