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Summary of the trigger systems of the Large Hadron Collider experiments ALICE, ATLAS, CMS and LHCb

Albrecht, J. LU ; Bozianu, L. ; Calefice, L. ; Cella, S. ; Cocha Toapaxi, C. E. ; Doglioni, C. LU ; Gligorov, V. V. ; Gooding, J. A. ; Iversen, K. E. LU orcid and Inkaew, P. , et al. (2025) In Journal of Physics G: Nuclear and Particle Physics 52(3).
Abstract

In modern high energy physics (HEP) experiments, triggers perform the important task of selecting, in real time, the data to be recorded and saved for physics analyses. As a result, trigger strategies play a key role in extracting relevant information from the vast streams of data produced at facilities like the large hadron collider (LHC). As the energy and luminosity of the collisions increase, these strategies must be upgraded and maintained to suit the experimental needs. This whitepaper presents a high-level overview and reviews recent developments of triggering practices employed at the LHC. The general trigger principles applied at modern HEP experiments are highlighted, with specific reference to the current trigger... (More)

In modern high energy physics (HEP) experiments, triggers perform the important task of selecting, in real time, the data to be recorded and saved for physics analyses. As a result, trigger strategies play a key role in extracting relevant information from the vast streams of data produced at facilities like the large hadron collider (LHC). As the energy and luminosity of the collisions increase, these strategies must be upgraded and maintained to suit the experimental needs. This whitepaper presents a high-level overview and reviews recent developments of triggering practices employed at the LHC. The general trigger principles applied at modern HEP experiments are highlighted, with specific reference to the current trigger state-of-the-art within the ALICE, ATLAS, CMS and LHCb collaborations. Furthermore, a brief synopsis of the new trigger paradigm required by the upcoming high-luminosity upgrade of the LHC is provided. This whitepaper, compiled by Early Stage Researchers of the SMARTHEP network, is not meant to provide an exhaustive review or substitute documentation and papers from the collaborations themselves, but rather offer general considerations and examples from the literature that are relevant to the SMARTHEP network.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
data acquisition, high energy physics, particle physics, real time analysis, SMARTHEP, trigger
in
Journal of Physics G: Nuclear and Particle Physics
volume
52
issue
3
article number
030501
publisher
IOP Publishing
external identifiers
  • scopus:85218084435
ISSN
0954-3899
DOI
10.1088/1361-6471/adaadc
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2025 The Author(s). Published by IOP Publishing Ltd.
id
2cc435da-de8e-4f26-bea6-adbdc0f24c7e
date added to LUP
2025-02-27 06:29:45
date last changed
2025-04-04 14:23:03
@article{2cc435da-de8e-4f26-bea6-adbdc0f24c7e,
  abstract     = {{<p>In modern high energy physics (HEP) experiments, triggers perform the important task of selecting, in real time, the data to be recorded and saved for physics analyses. As a result, trigger strategies play a key role in extracting relevant information from the vast streams of data produced at facilities like the large hadron collider (LHC). As the energy and luminosity of the collisions increase, these strategies must be upgraded and maintained to suit the experimental needs. This whitepaper presents a high-level overview and reviews recent developments of triggering practices employed at the LHC. The general trigger principles applied at modern HEP experiments are highlighted, with specific reference to the current trigger state-of-the-art within the ALICE, ATLAS, CMS and LHCb collaborations. Furthermore, a brief synopsis of the new trigger paradigm required by the upcoming high-luminosity upgrade of the LHC is provided. This whitepaper, compiled by Early Stage Researchers of the SMARTHEP network, is not meant to provide an exhaustive review or substitute documentation and papers from the collaborations themselves, but rather offer general considerations and examples from the literature that are relevant to the SMARTHEP network.</p>}},
  author       = {{Albrecht, J. and Bozianu, L. and Calefice, L. and Cella, S. and Cocha Toapaxi, C. E. and Doglioni, C. and Gligorov, V. V. and Gooding, J. A. and Iversen, K. E. and Inkaew, P. and Magdalinski, D. and Sopasakis, A. and Wilson-Edwards, D. J.}},
  issn         = {{0954-3899}},
  keywords     = {{data acquisition; high energy physics; particle physics; real time analysis; SMARTHEP; trigger}},
  language     = {{eng}},
  month        = {{03}},
  number       = {{3}},
  publisher    = {{IOP Publishing}},
  series       = {{Journal of Physics G: Nuclear and Particle Physics}},
  title        = {{Summary of the trigger systems of the Large Hadron Collider experiments ALICE, ATLAS, CMS and LHCb}},
  url          = {{http://dx.doi.org/10.1088/1361-6471/adaadc}},
  doi          = {{10.1088/1361-6471/adaadc}},
  volume       = {{52}},
  year         = {{2025}},
}