Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 22: Experimental techniques in astroparticle physics I

T 22.8: Talk

Monday, March 15, 2021, 17:50–18:05, Tv

First light of the PMT characterisation facility for the IceCube mDOM at the TU Dortmund — •Johannes Werthebach for the IceCube collaboration — TU Dortmund

The IceCube Neutrino Observatory measured the first astrophysical high-energy neutrino flux back in 2013. One substantial part of the upcoming low energy expansion is the multi-PMT optical module, mDOM. It consists of 24 3-inch PMTs spherically arranged within the mDOM. To provide a consistent signal quality more than 10.000 PMTs need to be tested and characterised before they are installed into the mDOM.

A large scale testing facility is build in Aachen and Dortmund. To provide a fast and reliable solution 98 PMTs can be characterised in a single test cycle at temperatures as low as -20°C. The setup and first measurements from the site at the TU Dortmund are presented.