Heidelberg 2022 – scientific programme

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T: Fachverband Teilchenphysik

T 69: DAQ and Trigger 3

T 69.8: Talk

Wednesday, March 23, 2022, 18:00–18:15, T-H28

A Hardware-Based Track Trigger — •Joachim Zinßer, Sebastian Dittmeier, and André Schöning — Physikalisches Institut, Universität Heidelberg

A hardware-based solution to filter interesting events more efficiently was explored for the planned increase in luminosity during the ATLAS Phase-II Upgrade. The plan is to install a filter based on the particles' tracks, which have to be evaluated in real-time. This task is well suited for implementation in hardware since, on the one hand, it requires only basic arithmetics and comparisons, and, on the other hand, it can be implemented in highly parallel hardware architecture, e.g., by exploiting FPGAs. This approach utilizes linear approximations to the helix parameters of trajectories and a database of simulated possible trajectories. A Track Fitter is implemented on the Stratix X FPGA from Intel with an integrated High Bandwidth Memory (HBM) for storing the simulated constants. In this talk, the final state of the firmware will be discussed and the implementation in hardware will be compared to simulation results and expectancies.