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Article: Operation of the ATLAS trigger system in Run 2

TitleOperation of the ATLAS trigger system in Run 2
Authors
KeywordsData acquisition concepts
Data reduction methods
Online farms and online filtering
Trigger concepts and systems (hardware and software)
Issue Date2020
PublisherIOP Publishing. The Journal's web site is located at http://www.iop.org/EJ/journal/1748-0221
Citation
Journal of Instrumentation, 2020, v. 15 n. 10, p. article no. P10004:1-60 How to Cite?
AbstractThe ATLAS experiment at the Large Hadron Collider employs a two-level trigger system to record data at an average rate of 1 kHz from physics collisions, starting from an initial bunch crossing rate of 40 MHz. During the LHC Run 2 (2015–2018), the ATLAS trigger system operated successfully with excellent performance and flexibility by adapting to the various run conditions encountered and has been vital for the ATLAS Run-2 physics programme. For proton-proton running, approximately 1500 individual event selections were included in a trigger menu which specified the physics signatures and selection algorithms used for the data-taking, and the allocated event rate and bandwidth. The trigger menu must reflect the physics goals for a given data collection period, taking into account the instantaneous luminosity of the LHC and limitations from the ATLAS detector readout, online processing farm, and offline storage. This document discusses the operation of the ATLAS trigger system during the nominal proton-proton data collection in Run 2 with examples of special data-taking runs. Aspects of software validation, evolution of the trigger selection algorithms during Run 2, monitoring of the trigger system and data quality as well as trigger configuration are presented. © 2020 CERN for the benefit of the ATLAS collaboration.
Persistent Identifierhttp://hdl.handle.net/10722/290970
ISSN
2020 Impact Factor: 1.415
2020 SCImago Journal Rankings: 0.741
PubMed Central ID
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLo, CY-
dc.contributor.authorParedes Hernandez, D-
dc.contributor.authorSalvucci, A-
dc.contributor.authorTAM, KC-
dc.contributor.authorTu, Y-
dc.contributor.authorThe ATLAS collaboration-
dc.date.accessioned2020-11-02T05:49:42Z-
dc.date.available2020-11-02T05:49:42Z-
dc.date.issued2020-
dc.identifier.citationJournal of Instrumentation, 2020, v. 15 n. 10, p. article no. P10004:1-60-
dc.identifier.issn1748-0221-
dc.identifier.urihttp://hdl.handle.net/10722/290970-
dc.description.abstractThe ATLAS experiment at the Large Hadron Collider employs a two-level trigger system to record data at an average rate of 1 kHz from physics collisions, starting from an initial bunch crossing rate of 40 MHz. During the LHC Run 2 (2015–2018), the ATLAS trigger system operated successfully with excellent performance and flexibility by adapting to the various run conditions encountered and has been vital for the ATLAS Run-2 physics programme. For proton-proton running, approximately 1500 individual event selections were included in a trigger menu which specified the physics signatures and selection algorithms used for the data-taking, and the allocated event rate and bandwidth. The trigger menu must reflect the physics goals for a given data collection period, taking into account the instantaneous luminosity of the LHC and limitations from the ATLAS detector readout, online processing farm, and offline storage. This document discusses the operation of the ATLAS trigger system during the nominal proton-proton data collection in Run 2 with examples of special data-taking runs. Aspects of software validation, evolution of the trigger selection algorithms during Run 2, monitoring of the trigger system and data quality as well as trigger configuration are presented. © 2020 CERN for the benefit of the ATLAS collaboration.-
dc.languageeng-
dc.publisherIOP Publishing. The Journal's web site is located at http://www.iop.org/EJ/journal/1748-0221-
dc.relation.ispartofJournal of Instrumentation-
dc.rightsJournal of Instrumentation. Copyright © IOP Publishing.-
dc.rightsThis is an author-created, un-copyedited version of an article published in [insert name of journal]. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/[insert DOI].-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectData acquisition concepts-
dc.subjectData reduction methods-
dc.subjectOnline farms and online filtering-
dc.subjectTrigger concepts and systems (hardware and software)-
dc.titleOperation of the ATLAS trigger system in Run 2-
dc.typeArticle-
dc.identifier.emailLo, CY: samuel3@hku.hk-
dc.identifier.emailParedes Hernandez, D: dparedes@hku.hk-
dc.identifier.emailTu, Y: yanjuntu@hku.hk-
dc.identifier.authorityTu, Y=rp01971-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1088/1748-0221/15/10/P10004-
dc.identifier.pmid30872953-
dc.identifier.pmcidPMC6383937-
dc.identifier.scopuseid_2-s2.0-85096497964-
dc.identifier.hkuros318568-
dc.identifier.volume15-
dc.identifier.issue10-
dc.identifier.spagearticle no. P10004:1-
dc.identifier.epage60-
dc.identifier.isiWOS:000577278000004-
dc.publisher.placeUnited Kingdom-
dc.identifier.issnl1748-0221-

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