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Mass production and characterization of 3-inch PMTs for the JUNO experiment

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arxiv 2102.11538 v2 pith:67YOGTNW submitted 2021-02-23 physics.ins-det hep-ex

Chuanya Cao , Jilei Xu , Miao He , Angel Abusleme , Mathieu Bongrand , Clément Bordereau , Dominique Breton , Anatael Cabrera
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Agustin Campeny Cédric Cerna Haoqiang Chen Po-An Chen Gérard Claverie Selma Conforti Di Lorenzo Christophe De La Taille Frédéric Druillole Amélie Fournier Marco Grassi Xiaofei Gu Michael Haacke Yang Han Patrick Hellmuth Yuekun Heng Rafael Herrera Yee Hsiung Bei-Zhen Hu Yongbo Huang Cédric Huss Ignacio Jeria Xiaoping Jing Cécile Jollet Victor Lebrin Frédéric Lefère Hongwei Li Nan Li Hongbang Liu Xiwen Liu Bayarto Lubsandorzhiev Sultim Lubsandorzhiev Arslan Lukanov Jihane Maalmi Anselmo Meregaglia Diana Navas-Nicolas Juan Pedro Ochoa-Ricoux Frédéric Perrot Rebin Karaparambil Rajan Abdel Rebii Bedřich Roskovec Cayetano Santos Mariangela Settimo Andrey Sidorenkov Igor Tkachev Giancarlo Troni Nikita Ushakov Guillaume Van Royen Benoit Viaud Dmitriy Voronin Pablo Walker Chung-Hsiang Wang Zhimin Wang Diru Wu Hangkun Xu Meihang Xu Chengfeng Yang Jie Yang Frédéric Yermia Xuantong Zhang
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classification physics.ins-dethep-ex
keywords pmtsinchjunoproductioncharacterizationmassproducedtubes
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abstract

26,000 3-inch photomultiplier tubes (PMTs) have been produced for Jiangmen Underground Neutrino Observatory (JUNO) by the Hainan Zhanchuang Photonics Technology Co., Ltd (HZC) company in China and passed all acceptance tests with only 15 tubes rejected. The mass production began in 2018 and elapsed for about 2 years at a rate of $\sim$1,000~PMTs per month. The characterization of the PMTs was performed in the factory concurrently with production as a joint effort between HZC and JUNO. Fifteen performance parameters were tracked at different sampling rates, and novel working strategies were implemented to improve quality assurance. This constitutes the largest sample of 3-inch PMTs ever produced and studied in detail to date.

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