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HK: Fachverband Physik der Hadronen und Kerne

HK 49: Poster – Astroteilchenphysik

HK 49.1: Poster

Donnerstag, 22. März 2012, 14:00–16:00, P Foyer

Tests of High QE PMTs for the Water Cherenkov Muon Veto of XENON1T — •Daniel Pätzold, Serena Fattori, Cyril Grignon, and Uwe Oberlack — Johannes Gutenberg Universität Mainz, Germany

The XENON Dark Matter program aims at directly detecting dark matter through the scattering of WIMPs off xenon nuclei. The detection principle is based on the concept of a dual phase xenon time projection chamber. The current experiment XENON100 is a leading dark matter experiment today, and its planned XENON1T successor aims at improving the sensitivity by another two orders of magnitude. A water cherenkov muon veto will be employed to achieve the required background suppression at the depth of the Gran Sasso National Laboratory (LNGS) in Italy. Here we discuss tests performed on high quantum efficiency 8 inch PMTs that will be used for the muon veto system.