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Accès ouvert déclaré 2026 article

Initial performance results of the JUNO detector*

13Citations signalées — pas une note de qualité
89Institutions déclarées
18Pays d’affiliation déclarés

Résumé fourni par la source

Abstract The Jiangmen Underground Neutrino Observatory (JUNO) started physics data taking on 26 August 2025. JUNO consists of a 20-kton liquid scintillator central detector, surrounded by a 35 kton water pool serving as a Cherenkov veto, and almost 1000 m 2 of plastic scintillator veto on top. The detector is located in a shallow underground laboratory with an overburden of 1800 m.w.e. This paper presents the performance results of the detector, extensively studied during the commissioning of the water phase, the subsequent liquid scintillator filling phase, and the first physics runs. The liquid scintillator achieved an attenuation length of 20.6 m at 430 nm, while the high coverage PMT system and scintillator together yielded about 1785 photoelectrons per MeV of energy deposit at the detector centre, measured using the 2.223 MeV γ from neutron captures on hydrogen with an Am-C calibration source. The reconstructed energy resolution is 3.4% for two 0.511 MeV γ at the detector centre and 2.9% for the 0.93 MeV quenched 214 Po alpha decays from natural radioactive sources. The energy non-linearity is calibrated to better than 1%. Intrinsic contaminations of 238 U and 232 Th in the liquid scintillator are below 10 -16 g/g, assuming secular equilibrium. The water Cherenkov detector achieves a muon detection efficiency better than 99.9% for muons traversing the liquid scintillator volume. During the initial science runs, the data acquisition duty cycle exceeded 97.8%, demonstrating the excellent stability and readiness of JUNO for high-precision neutrino physics.

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DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Initial performance results of the JUNO detector*
Date Crossref
01/04/2026
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.

Institutions déclarées

Pontificia Universidad Católica de ChileInstitut Pluridisciplinaire Hubert CurienUniversité de StrasbourgRWTH Aachen UniversityPakistan Institute of Nuclear Science and TechnologyUniversity of JyväskyläIstituto Nazionale di Fisica Nucleare, Sezione di CataniaSun Yat-sen UniversityUniversity of LiverpoolJoint Institute for Nuclear ResearchIstituto Nazionale di Fisica Nucleare, Sezione di MilanoChulalongkorn UniversityCentre National de la Recherche ScientifiqueUniversité Paris-SaclayInstitut National de Physique Nucléaire et de Physique des ParticulesLaboratoire de Physique des 2 Infinis Irène Joliot-CurieÉcole PolytechniqueLaboratoire Leprince-RinguetComenius University BratislavaUniversity of Milano-BicoccaIstituto Nazionale di Fisica Nucleare, Sezione di PadovaLaboratoire de Physique Subatomique et des Technologies AssociéesIMT AtlantiqueNantes UniversitéRoma Tre UniversityUniversität HamburgInstitute of Experimental Physics of the Slovak Academy of SciencesUniversity of TübingenJohannes Gutenberg University MainzUniversité de BordeauxNordic Transport DevelopmentLaboratoire de Physique des deux infinis BordeauxAix-Marseille UniversitéCentre de physique des particules de MarseilleWuhan UniversityNanjing UniversityIstituto Nazionale di Fisica Nucleare, Sezione di Milano BicoccaFrontier Energy (United States)Cornerstone UniversityUniversity of WarwickNational Yang Ming Chiao Tung UniversityShandong UniversityShanghai Jiao Tong UniversityGSI Helmholtz Centre for Heavy Ion ResearchGuangxi UniversityDongguan University of TechnologyTsinghua UniversityUniversity of Chinese Academy of SciencesChinese Academy of SciencesInstitute of Modern PhysicsNorth China Electric Power UniversitySouthern University of Science and TechnologyUniversity of California, IrvineChina Academy of Space TechnologyLomonosov Moscow State UniversityInstitute for Nuclear ResearchUniversidade Estadual de LondrinaUniversity of PerugiaIstituto Nazionale di Fisica Nucleare, Sezione di PerugiaUniversité Libre de BruxellesTechnical University of MunichCharles UniversitySuranaree University of TechnologyZhengzhou UniversityHarbin Institute of TechnologyUniversity of FerraraIstituto Nazionale di Fisica Nucleare, Sezione di FerraraChinese Academy of Geological SciencesChina University of GeosciencesForschungszentrum JülichIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiXi'an Jiaotong UniversityElectro Optical Systems (Germany)National Kaohsiung Normal UniversityA. Alikhanyan National LaboratoryNankai UniversityChengdu University of TechnologyUniversity of South ChinaNational University of Defense TechnologyInstitut de PhysiqueChina Institute of Atomic EnergyUniversity of Science and Technology of ChinaXiamen UniversityKing UniversityPeking UniversityPontifícia Universidade Católica do Rio de JaneiroUniversidad Andrés BelloNational Astronomical Research Institute of ThailandEast China University of Technology

Une affiliation ne permet pas de déduire la nationalité d’un auteur.

Sujets associés

Neutrino Physics ResearchRadiation Detection and Scintillator TechnologiesAstrophysics and Cosmic Phenomena

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