Münster 2017 – scientific programme
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T: Fachverband Teilchenphysik
T 57: Neutrinophysik 5 (Reaktorneutrinos)
T 57.5: Talk
Tuesday, March 28, 2017, 17:50–18:05, VSH 07
A PMT Mass Testing Setup for the JUNO Experiment using commercial shipping containers — •Alexander Tietzsch1, David Blum1, Caren Hagner2, Tobias Lachenmaier1, Henning Rebber2, Lisa Steppat2, Tobias Sterr1, and Björn Wonsak2 — 1Physikalisches Institut, Eberhard Karls Universität Tübingen — 2Institut für Experimentalphysik, Universität Hamburg
To reach the goal of determining the neutrino mass hierachy, an energy resolution of 3 % @ 1 MeV or better is a key property of the JUNO experiment, which is currently under constrcution in China. This can only be fulfilled with a high optical coverage in the experiment - realized by about 17000 20-inch-PMTs and up to 34000 3-inch-PMTs - and using PMTs with a high photon detection efficiency. Here it is necessary that every PMT used in JUNO hit some important requirements like high quantum efficiency, low dark noise rate and a sufficient time resolution. So, each of the 20-inch-PMTs has to be tested before being mounted into the detector. In this talk we present our concept of testing up to 20000 20-inch-PMTs by developing a testing facility using commercial shipping containers, that were eqipped with all the necessary electronics for a mass characterization of all PMTs. We present the setup developed in Hamburg and Tübingen, report the progress during the last year and give an outlook for the soon starting PMT testing phase in spring 2017 at the JUNO site in China. This work is supported by the Deutsche Forschungsgemeinschaft.