The ATLAS Trigger System
Leonardo Toffolin
TL;DR
The paper describes the upgraded ATLAS Trigger system at CERN, highlighting its architecture, performance improvements during Run-3, and its critical role in enabling physics discoveries at the LHC.
Contribution
It presents the recent hardware and software upgrades to the ATLAS Trigger system and evaluates their impact on data collection efficiency and physics analysis capabilities.
Findings
Enhanced trigger performance in Run-3
Improved handling of increased luminosity and pile-up
Successful support for precision measurements and new physics searches
Abstract
The ATLAS Trigger system is a key component of the ATLAS experiment at the CERN Large Hadron Collider (LHC), designed to reduce the event rate from the 40 MHz proton-proton bunch crossing frequency to an output suitable for offline storage and analysis. During Run-3 (2022-2026), major upgrades were implemented in both the hardware-based Level-1 (L1) Trigger and the software-based High Level Trigger (HLT), to cope with increased luminosity and pile-up conditions. This paper summarises the main features of the ATLAS Trigger system, its performance in Run-3, and its role in enabling precision measurements and new physics searches.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsParticle Detector Development and Performance · Particle physics theoretical and experimental studies · Particle Accelerators and Free-Electron Lasers