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The ATLAS experiment at the CERN Large Hadron Collider: a description of the detector configuration for Run 3

2024· article· en· W4379806397 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

fundA Canadian funder is recorded on the work.
no affNo Canadian affiliation: this work is invisible to an affiliation-only frame.
No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Bibliographic record

VenueJournal of Instrumentation · 2024
Typearticle
Languageen
FieldPhysics and Astronomy
TopicParticle Detector Development and Performance
Canadian institutionsnot available
FundersSLAC National Accelerator LaboratoryBrookhaven National LaboratoryHigh Energy PhysicsDivision of PhysicsDepartment of Physics and Astronomy, University College LondonScience and Technology Facilities CouncilNatural Sciences and Engineering Research Council of CanadaUniversity of California, IrvineCollege of Engineering, Michigan State UniversityAgencia Nacional de Investigación y DesarrolloShanghai Key Laboratory for Particle Physics and CosmologyUniversité Hassan II de CasablancaTechnische Universität DortmundUniversity of ZululandUniversität InnsbruckPontificia Universidad Católica de ChileUniversity of Science and Technology of ChinaUniversidade do MinhoUniversity of West AtticaJulius-Maximilians-Universität WürzburgUniverza v LjubljaniUniversity of South AfricaUniversity of the PhilippinesState Key Laboratory of Particle Detection and ElectronicsUniversidade Federal de Juiz de ForaUniversity of WarwickUniversidad de TarapacáConselho Nacional de Desenvolvimento Científico e TecnológicoSouthern Methodist UniversityUniverzita Palackého v OlomouciUniversité Paris-SaclayUniversity of JohannesburgUniversité Cadi AyyadUniversity of TsukubaNuclear PhysicsAristotle University of ThessalonikiUniversity of TorontoUniversité de GenèveTechnion-Israel Institute of TechnologyUnited Arab Emirates UniversityUniversiteit van AmsterdamUniversité de FribourgUniversidade de CoimbraUniversidade de São PauloRoyal Holloway, University of LondonUniversidade Federal do Rio de JaneiroUniversitetet i OsloScottish Universities Physics AllianceNational Tsing Hua UniversityUniversità degli Studi di PaviaUniversità di PisaTechnische Universität DresdenMinisterstvo Školství, Mládeže a TělovýchovyUniversidad Autónoma de MadridCERNShanghai Jiao Tong UniversityMinistry of Education, IndiaHigh Energy Accelerator Research OrganizationStony Brook UniversityInstitut "Jožef Stefan"Waseda UniversityUniversitatea din BucureștiZápadočeská Univerzita v PlzniSimon Fraser UniversityConsejo Nacional de Investigaciones Científicas y TécnicasSapienza Università di RomaUniversidad de Buenos AiresCentre National de la Recherche ScientifiqueMax-Planck-GesellschaftGeorg-August-Universität GöttingenLunds UniversitetStockholms UniversitetAcademia SinicaAix-Marseille UniversitéOhio State UniversityČeské Vysoké Učení Technické v PrazeNational Natural Science Foundation of ChinaFundação de Amparo à Pesquisa do Estado de São PauloAbdus Salam International Centre for Theoretical PhysicsUniversität HeidelbergAkademia Górniczo-Hutnicza im. Stanislawa StaszicaUniversity of SussexDanmarks GrundforskningsfondAlbert-Ludwigs-Universität FreiburgUniversity College LondonUniversity of GlasgowYork UniversityUniversity of Illinois at Urbana-ChampaignLouisiana Tech UniversityUniversität SiegenUniversité Mohammed VI PolytechniqueUniversité Grenoble AlpesAgencia Nacional de Promoción Científica y TecnológicaDeutsches Elektronen-SynchrotronJustus Liebig Universität GießenUniversity of OxfordUniversity of OklahomaTRIUMFNew York University Abu DhabiInstituto Superior TécnicoBundesministerium für Bildung und ForschungUniversity of OregonUniversidad de GranadaSorbonne UniversitéKungliga Tekniska HögskolanUniversity of PittsburghIowa State UniversityUniversità degli Studi di TrentoUniversidad Nacional de La PlataMichigan State UniversityAkademie Věd České RepublikyBundesministerium für Wissenschaft, Forschung und WirtschaftSlovenská Akadémia ViedShandong UniversityUniversidade do Estado do Rio de JaneiroTel Aviv UniversityUniversidad Técnica Federico Santa MaríaUniverzita Karlova v PrazeMcGill UniversityUniverzita Komenského v BratislaveUniversità della CalabriaHarvard UniversityQueen Mary University of LondonUniversity of WashingtonInstitut National de Physique Nucléaire et de Physique des ParticulesUniversidade de LisboaNorthern Illinois UniversityUniversità degli Studi di Napoli Federico IILudwig-Maximilians-Universität MünchenRadboud UniversiteitUniversity of Cape TownOklahoma State UniversityAustrian Science FundUniversity of Pennsylvania
KeywordsPhysicsLarge Hadron ColliderInteraction pointAtlas (anatomy)MicroMegas detectorATLAS experimentCalorimeter (particle physics)DetectorMuonNuclear physicsLuminosityScintillatorOptics

Abstract

fetched live from OpenAlex

Abstract The ATLAS detector is installed in its experimental cavern at Point 1 of the CERN Large Hadron Collider. During Run 2 of the LHC, a luminosity of ℒ = 2 × 10 34 cm -2 s -1 was routinely achieved at the start of fills, twice the design luminosity. For Run 3, accelerator improvements, notably luminosity levelling, allow sustained running at an instantaneous luminosity of ℒ = 2 × 10 34 cm -2 s -1 , with an average of up to 60 interactions per bunch crossing. The ATLAS detector has been upgraded to recover Run 1 single-lepton trigger thresholds while operating comfortably under Run 3 sustained pileup conditions. A fourth pixel layer 3.3 cm from the beam axis was added before Run 2 to improve vertex reconstruction and b-tagging performance. New Liquid Argon Calorimeter digital trigger electronics, with corresponding upgrades to the Trigger and Data Acquisition system, take advantage of a factor of 10 finer granularity to improve triggering on electrons, photons, taus, and hadronic signatures through increased pileup rejection. The inner muon endcap wheels were replaced by New Small Wheels with Micromegas and small-strip Thin Gap Chamber detectors, providing both precision tracking and Level-1 Muon trigger functionality. Trigger coverage of the inner barrel muon layer near one endcap region was augmented with modules integrating new thin-gap resistive plate chambers and smaller-diameter drift-tube chambers. Tile Calorimeter scintillation counters were added to improve electron energy resolution and background rejection. Upgrades to Minimum Bias Trigger Scintillators and Forward Detectors improve luminosity monitoring and enable total proton-proton cross section, diffractive physics, and heavy ion measurements. These upgrades are all compatible with operation in the much harsher environment anticipated after the High-Luminosity upgrade of the LHC and are the first steps towards preparing ATLAS for the High-Luminosity upgrade of the LHC. This paper describes the Run 3 configuration of the ATLAS detector.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.083
Threshold uncertainty score0.262

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.017
GPT teacher head0.266
Teacher spread0.248 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it