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Beam-induced and cosmic-ray backgrounds observed in the ATLAS detector during the LHC 2012 proton-proton running period

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241Institutions déclarées
39Pays d’affiliation déclarés

Résumé fourni par la source

This paper discusses various observations on beam-induced and cosmic-ray backgrounds in the ATLAS detector during the LHC 2012 proton-proton run. Building on published results based on 2011 data, the correlations between background and residual pressure of the beam vacuum are revisited. Ghost charge evolution over 2012 and its role for backgrounds are evaluated. New methods to monitor ghost charge with beam-gas rates are presented and observations of LHC abort gap population by ghost charge are discussed in detail. Fake jets from colliding bunches and from ghost charge are analysed with improved methods, showing that ghost charge in individual radio-frequency buckets of the LHC can be resolved. Some results of two short periods of dedicated cosmic-ray background data-taking are shown; in particular cosmic-ray muon induced fake jet rates are compared to Monte Carlo simulations and to the fake jet rates from beam background. A thorough analysis of a particular LHC fill, where abnormally high background was observed, is presented. Correlations between backgrounds and beam intensity losses in special fills with very high $β^*$ are studied.

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Contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Beam-induced and cosmic-ray backgrounds observed in the ATLAS detector during the LHC 2012 proton-proton running period
Date Crossref
20/05/2016
Éditeur
IOP Publishing
Type
journal-article

Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude et ne compte pas comme une seconde source scientifique indépendante.

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Centre National de la Recherche ScientifiqueAix-Marseille UniversitéCentre de physique des particules de MarseilleInstitut National de Physique Nucléaire et de Physique des ParticulesUniversity of OklahomaUniversity of IowaAzerbaijan National Academy of SciencesUniversité Paris-SudUniversité Paris-SaclayNational Institute for Subatomic PhysicsUniversity of AmsterdamMichigan State UniversityUniversity of California, Santa CruzUniversity of SussexTel Aviv UniversityTechnion – Israel Institute of TechnologyUniversity of OregonStockholm UniversityThe Abdus Salam International Centre for Theoretical Physics (ICTP)Istituto Nazionale di Fisica Nucleare, Sezione di TriesteIstituto Nazionale di Fisica Nucleare, Gruppo Collegato di UdineAGH University of KrakowBrookhaven National LaboratoryNorthern Illinois UniversityLudwig-Maximilians-Universität MünchenRutherford Appleton LaboratoryUniversity of LiverpoolUniversity of BelgradeUniversity of GöttingenUniversidad de GranadaLIP - Laboratory of Instrumentation and Experimental Particle PhysicsBoston UniversityJoint Institute for Nuclear ResearchUniversity of Rome Tor VergataIstituto Nazionale di Fisica Nucleare, Roma Tor VergataLund UniversityP.N. Lebedev Physical Institute of the Russian Academy of SciencesOsservatorio astronomico di BolognaIstituto Nazionale di Fisica Nucleare, Sezione di BolognaUniversity of BolognaUniversity of VictoriaLaboratoire de Physique Subatomique et de CosmologieUniversité Grenoble AlpesConsejo Nacional de Investigaciones Científicas y TécnicasInstituto de Física La PlataUniversidad Nacional de La PlataEuropean Organization for Nuclear ResearchNational Technical University of AthensUniversity of SalentoIstituto Nazionale di Fisica Nucleare, Sezione di LecceIstituto Nazionale di Fisica Nucleare, Sezione di MilanoUniversity of ChicagoColumbia UniversityUniversity of BirminghamIstituto Nazionale di Fisica Nucleare, Sezione di NapoliUniversity of CopenhagenUniversity of WashingtonUniversitat de ValènciaInstituto de Física CorpuscularInstitut de Microelectrònica de BarcelonaLawrence Berkeley National LaboratoryUniversity of California, BerkeleyHigh Energy Accelerator Research OrganizationUniversidade Federal do Rio de JaneiroBrandeis UniversityUniversity of MichiganUniversity of CoimbraUniversity of LisbonUniversity of SheffieldUniversity of GenevaThe University of Texas at AustinHeidelberg UniversityUniversity of MilanNational and Kapodistrian University of AthensTechnische Universität DresdenSiberian Branch of the Russian Academy of SciencesBudker Institute of Nuclear PhysicsInstitute for High Energy PhysicsUniversity of PisaIstituto Nazionale di Fisica Nucleare, Sezione di PisaIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiNational Research Nuclear University MEPhISlovak Academy of SciencesInstitute of Experimental Physics of the Slovak Academy of SciencesIstituto Nazionale di Fisica Nucleare, Sezione di Roma IDuke UniversityInstitute of Particle PhysicsUniversité de MontréalBoğaziçi UniversityQueen Mary University of LondonUniversity of FreiburgUniversity of CambridgeUniversity of BonnInstitute for Theoretical and Experimental PhysicsUniversity of 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TorontoThe Ohio State UniversityUniversité Paris CitéSorbonne UniversitéLaboratoire de Physique Nucléaire et de Hautes ÉnergiesTufts UniversityUniversity of BernUniversity of WarwickNew York UniversityBahçeşehir UniversityGaziantep UniversityMcGill UniversityUniversity College LondonCarleton UniversityUniversity of Massachusetts AmherstUniversity of Hassan II CasablancaYork UniversityUppsala UniversityRoyal Holloway University of LondonUniversity of PittsburghHumboldt-Universität zu BerlinThe University of SydneyArgonne National LaboratoryPontificia Universidad Católica de ChileUniversity of UdineInstitute for High Energy PhysicsChinese University of Hong KongHong Kong University of Science and TechnologyUniversity of Hong KongUniversidad de Buenos AiresUniversity at Albany, State University of New YorkUniversité Clermont AuvergneLaboratoire de Physique de Clermont AuvergneClermont UniversitéThe University of Texas at ArlingtonTokyo Metropolitan UniversityWeizmann Institute of 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UniversityJustus-Liebig-Universität GießenCadi Ayyad UniversityThe University of OsakaNagasaki Institute of Applied ScienceUniversity of Science and Technology of ChinaNational Centre for Nuclear Energy, Science and TechnologyAristotle University of ThessalonikiLomonosov Moscow State UniversityUniversity of New MexicoLouisiana Tech UniversityA. Alikhanyan National LaboratoryOklahoma State UniversityUniversity of TsukubaNational Academy of Sciences of BelarusB.I. Stepanov Institute of PhysicsShinshu UniversityTokyo Institute of TechnologyObayashi (Japan)Nagoya UniversityInstitute of Physics, Academia SinicaUniversity of the WitwatersrandWaseda UniversityKyoto UniversityThe University of Texas at DallasThe University of AdelaideUniversität InnsbruckKyushu UniversityIstanbul Aydın UniversityUniversity of WürzburgUniversidad Antonio NariñoKTH Royal Institute of TechnologyHampton UniversityHiroshima Institute of TechnologyOkayama University of ScienceUniversity of MinhoJagiellonian UniversityInstitute of PhysicsNational Institute for Research and Development of Isotopic and Molecular TechnologiesCentre de Calcul de l’Institut National de Physique Nucléaire et de Physique des Particules

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