Würzburg 2018 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 9: Neutrinophysik IX
T 9.8: Vortrag
Montag, 19. März 2018, 17:45–18:00, Z6 - HS 0.002
First results from the PMT Mass Testing System for JUNO — •Alexander Tietzsch1, Björn Wonsak2, Tobias Lachenmaier1, Caren Hagner2, Tobias Sterr1, Malte Stender2, Henning Rebber2, David Meyhöfer2, David Blum1, Tobias Heinz1, Axel Müller1, and Marc Breisch1 for the JUNO collaboration — 1Physikalisches Institut, Universität Tübingen — 2Institut für Experimentalphysik, Universität Hamburg
To reach the goal of determining the neutrino mass hierarchy, all parts of the JUNO experiment need to hit certain quality criteria, especially those which are related to the final energy resolution of the detector. This is relevant in particular for the 20'000 20-inch photomultiplier tubes (PMTs) intended to be used in JUNO. Therefore, all PMTs will be checked and characterized with a PMT mass testing facility before being mounted into the JUNO detector. With this PMT mass testing system, several key characteristics like dark rate, peak-to-valley ratio, photon detection efficiency and timing resolution are targeted to be measured in a stable and comparable way and compared to the requirements of JUNO.
In this talk, we will focus on the data taking with the PMT mass testing facility for JUNO, the current status of the data acquisition methods, the progress in the PMT testing and some preliminary results from the first batch of PMTs will be presented.
This work is supported by the Deutsche Forschungsgemeinschaft.