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Bonn 2020 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 61: Methods of astroparticle physics IV

T 61.9: Vortrag

Mittwoch, 1. April 2020, 18:30–18:45, L-3.001

Status Update from the PMT Mass Testing Container System for JUNO — •Alexander Tietzsch1, David Blum1, Marc Breisch1, Jessica Eck1, Caren Hagner2, Tobias Heinz1, Tobias Lachenmaier1, Neha Lad1, David Meyhöfer2, Axel Müller1, Henning Rebber2, Tobias Sterr1, and Björn Wonsak21Physikalisches Institut, Eberhard Karls Universität Tübingen — 2Institut für Experimentalphysik, Universität Hamburg

The Jiangmen Underground Neutrino Observatory (JUNO) experiment will be one of the coming neutrino oscillation experiments starting in the next years. To reach its main goal of determining the neutrino mass hierarchy from the oscillation pattern, a high energy resolution of 3% @ 1 MeV is required, for whose realization up to 20'000 20-inch photomultiplier tubes (PMTs) are intended to 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 and is running successfully for more than 2 years now. With this system, so far more than 12'000 PMTs have been tested and characterized. This talk will give an update on the system, the progress in PMT testing and data analysis of tested PMTs and will discuss current statistics and questions related to the PMT characterization for JUNO. This work is supported by the Deutsche Forschungsgemeinschaft.

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