Annual Meeting of the Swiss Physical Society 2022

【357】Event reconstruction at 30 MHz - the LHCb experience

30 Jun 2022, 16:45

15m

Room G 140

Talk Nuclear, Particle- and Astrophysics (TASK) Nuclear, Particle- & Astrophysics

Speaker

Michel De Cian (EPFL - Ecole Polytechnique Federale Lausanne (CH))

Description

In 2022 the LHCb experiment starts taking data using a redesigned data acquisition and trigger system. A complete event reconstruction at the full LHC bunch-crossing rate of 30MHz will be performed using a two-stage software trigger, using GPUs in the first stage and a farm of CPUs in the second stage.

I will show the performance and design of the real-time event reconstruction, discuss the challenges of implementing and running a purely software-based trigger at an LHC experiment and present first results from Run 3 data taking.

Presentation materials

fribourg.pdf