SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 18: Exp. Methods, CTA, others

T 18.5: Vortrag

Montag, 20. März 2023, 17:30–17:45, POT/0081

Acceptance Tests of 10,200 Photomultiplier Tubes for the mDOMs of the IceCube Upgrade — •Lasse Halve¹, Philipp Behrens¹, Erik Büchau¹, Maja Freienhofer², Tara Haji Azim¹, Joëlle Savelberg¹, Lars Schmidt¹, Lydia von der Weiden², Johannes Werthebach², and Christopher Wiebusch¹ for the IceCube collaboration — ¹RWTH Aachen University - Physics Institute III B, Aachen, Germany — ²Astroparticle Physics WG Rhode, TU Dortmund University, Germany

More than 10,000 3-inch Photomultiplier Tubes (PMT) will be deployed in multi-PMT Digital Optical Modules (mDOM) of the IceCube Upgrade. Prior to integration of the PMTs into the modules, they need to be tested for compliance with specifications agreed upon with the manufacturer. For this purpose, two dedicated testing facilities have been constructed at RWTH Aachen University and TU Dortmund University. These facilities have been optimized for a large throughput of PMTs using highly automized and parallelized testing routines. All PMTs have undergone extensive acceptance tests including single-photon response and detection efficiency, time-resolution, background rates, high-voltage dependence and more. During testing, several deviations from the specifications were identified and could be mitigated prior to the mDOM production. We describe the design of the facilities, testing procedures, and results of the acceptance tests.