Dortmund 2021 – scientific programme
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T: Fachverband Teilchenphysik
T 44: Neutrino physics without accelerators V
T 44.7: Talk
Tuesday, March 16, 2021, 17:35–17:50, Ts
Results from and Prospects for the PMT Mass Testing Container System for JUNO — •Alexander Tietzsch1, Lukas Bieger1, David Blum1, Marc Breisch1, Jessica Eck1, Caren Hagner2, Tobias Heinz1, Benedict Kaiser1, Frieder Kohler1, Tobias Lachenmaier1, David Meyhöfer2, Axel Müller1, Henning Rebber2, Tobias Sterr1, Björn Wonsak2, and Jan Züfle1 — 1Physikalisches Institut, Eberhard Karls Universität Tübingen — 2Institut für Experimentalphysik, Universität Hamburg
The Jiangmen Underground Neutrino Observatory (JUNO) experiment will be a new neutrino oscillation experiment, which is currently under construction and starting in the next years, with main goal of determining the neutrino mass ordering from the oscillation pattern. Therefore a high energy resolution of 3% @ 1 MeV is required, for whose realization up to 20'000 20-inch photomultiplier tubes (PMTs) will be used in JUNO. All of these PMTs have to fulfil dedicated quality requirements for several key characteristics (dark rate, PDE, peak-to-valley ratio etc.) for which a PMT mass testing facility using commercial shipping containers has been developed. This PMT testing container system is running successfully for more than 3 years now and all 20'000 PMTs have been tested and characterized at least once. In this talk we report about the progress in PMT testing, show selected results on the PMT performance and accuracies of the testing facility and will discuss prospects for the container system and the ongoing PMT characterization campaign for JUNO. This work is supported by the Deutsche Forschungsgemeinschaft.