Göttingen 2025 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 104: Search for Dark Matter V

T 104.3: Vortrag

Freitag, 4. April 2025, 09:30–09:45, VG 4.102

Certification of 1.5m-TPC electrodes in a large liquid xenon R&D platform — •Julia Müller — University of Freiburg

Over the past decades dual-phase xenon time projection chambers (TPCs) for the direct search for dark matter continuously grew in size and became more sensitive. However, also the technical realization of these large TPCs got more and more challenging. Among the most crucial and also most complex detector components are the large-diameter TPC electrodes required to establish the electron drift field across the TPC. These electrodes need to feature a high optical transparency and high voltage resilience. The large-scale test platform PANCAKE in Freiburg allows testing such electrodes in a liquid xenon environment before they are installed into the final TPC. We will present results of a qualification campaign of three TPC electrodes of 1.5m diameter.