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HK: Fachverband Physik der Hadronen und Kerne
HK 57: Astroparticle Physics 3
HK 57.4: Talk
Thursday, March 26, 2015, 18:15–18:30, K/HS1
Photomultiplier tests for XENON1T — •Dominick Cichon on behalf of the XENON collaboration — Max-Planck-Institut für Kernphysik, Heidelberg, Germany
The upcoming dark matter direct-detection experiment XENON1T will employ photosensors with high detection efficiencies and low intrinsic radioactivity. This is necessary for the experiment to reach its projected sensitivity to interaction cross sections down to σ ∼ 2 · 10−47 cm2 fo the case of a dark matter particle with mass ∼ 50 GeV/c2 interacting with a nucleon.
This talk illustrates how photomultiplier tubes (PMTs) for XENON1T are tested in order to decide whether they fulfill the experiment’s requirements. The general testing procedure will be outlined, with a focus being placed on PMT testing facilities at the MPIK in Heidelberg used for this task, where PMT properties at room temperature and at liquid xenon temperature are measured.