Münster 2017 – scientific programme

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T: Fachverband Teilchenphysik

T 64: Experimentelle Techniken der Astroteilchenphysik 3

T 64.8: Talk

Tuesday, March 28, 2017, 18:30–18:45, VSH 18

Quantum efficiency measurements of the mDOM PMTs for Iceube-Gen2 — •Raffaela Busse, Lew Classen, and Alexander Kappes for the IceCube collaboration — Institut fur Kernphysik, Westfälische Wilhelms-Universität Münster

A significant sensitivity gain for IceCube-Gen2 is anticipated to come from new optical sensor designs. One candidate is the Multi-PMT Digital Optical Module (mDOM), which incorporates 24 3'' photomultipliers (PMTs). This design features a.o. an increased effective area and information on the photon arrival direction. To exploit its full potential, a detailed understanding of the PMTs is crucial. Therefore, the properties of all PMT components have to be investigated thoroughly. This talk focuses on the optical properties of the glass and the photocathode, in particular on the quantum efficiency and the wavelength- and angular dependencies. The talk presents measurements of these aspects with a test stand that has been designed and set up in the framework of a master thesis.