SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 116: Neutrinos Legend, Neutrino Theory

T 116.3: Vortrag

Donnerstag, 23. März 2023, 16:20–16:35, POT/0251

Set Up and Run of a Cherenkov Test Detector — •Ivana Nikolac — Physikalische Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany

High-energy particles, like muons, can cross many kilometres of rock and penetrate even the deepest underground laboratories, causing a non-negligible background in rare-event experiments. Muons can also produce neutrons, which mimic dark matter signals. This makes the muon veto an integral part of any rare-event underground experiment. To test the properties of a muon veto system, at the University of Tübingen a small volume water Cherenkov veto is being set up. The instrument (DODI) is a dodecahedron-shaped steel tank with a capacity of 700 litres, lined inside with highly reflective foil, and equipped with eleven photomultiplier tubes (PMTs). Due to its relatively small size and easy access to both its exterior and interior parts, DODI offers the opportunity to probe the muon veto system and its efficiency in real-time. This can be achieved, for example, by introducing different reflective materials in the tank or changing the PMT types. For future experiments, DODI will be further tested as a neutron tagger, first with water and then by introducing different Gadolinium arrangements into the water to improve the efficiency.