• Medientyp: E-Artikel
  • Titel: Mass testing and characterization of 20-inch PMTs for JUNO
  • Beteiligte: Abusleme, Angel [VerfasserIn]; Adam, Thomas [VerfasserIn]; Andronico, Giuseppe [VerfasserIn]; Enqvist, Timo [VerfasserIn]; Enzmann, Heike [VerfasserIn]; Fabbri, Andrea [VerfasserIn]; Fan, Donghua [VerfasserIn]; Fan, Lei [VerfasserIn]; Fang, Jian [VerfasserIn]; Fang, Wenxing [VerfasserIn]; Fargetta, Marco [VerfasserIn]; Fedoseev, Dmitry [VerfasserIn]; Fei, Zhengyong [VerfasserIn]; Anfimov, Nikolay [VerfasserIn]; Feng, Li-Cheng [VerfasserIn]; Feng, Qichun [VerfasserIn]; Ford, Richard [VerfasserIn]; Fournier, Amélie [VerfasserIn]; Gan, Haonan [VerfasserIn]; Gao, Feng [VerfasserIn]; Garfagnini, Alberto [VerfasserIn]; Gavrikov, Arsenii [VerfasserIn]; Giammarchi, Marco [VerfasserIn]; Giudice, Nunzio [VerfasserIn]; [...]
  • Erschienen: Springer, 2022
  • Erschienen in: The European physical journal / C 82(12), 1168 (2022). doi:10.1140/epjc/s10052-022-11002-8
  • Sprache: Englisch
  • DOI: https://doi.org/10.1140/epjc/s10052-022-11002-8
  • ISSN: 1434-6052; 1434-6044
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  • Beschreibung: Main goal of the JUNO experiment is to determine the neutrino mass ordering using a 20 kt liquid-scintillator detector. Its key feature is an excellent energy resolution of at least 3% at 1 MeV, for which its instruments need to meet a certain quality and thus have to be fully characterized. More than 20,000 20-inch PMTs have been received and assessed by JUNO after a detailed testing program which began in 2017 and elapsed for about four years. Based on this mass characterization and a set of specific requirements, a good quality of all accepted PMTs could be ascertained. This paper presents the performed testing procedure with the designed testing systems as well as the statistical characteristics of all 20-inch PMTs intended to be used in the JUNO experiment, covering more than fifteen performance parameters including the photocathode uniformity. This constitutes the largest sample of 20-inch PMTs ever produced and studied in detail to date, i.e. 15,000 of the newly developed 20-inch MCP-PMTs from Northern Night Vision Technology Co. (NNVT) and 5000 of dynode PMTs from Hamamatsu Photonics K. K.(HPK).
  • Zugangsstatus: Freier Zugang