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T: Fachverband Teilchenphysik

T 84: Search for Dark Matter IV

T 84.9: Vortrag

Donnerstag, 3. April 2025, 18:15–18:30, VG 4.102

Design and Commissioning of the MainzTPC2 — •Constantin Szyszka, Alexander Deisting, Christopher Hils, Peter György, Kaveh Kooshkjalali, and Uwe Oberlack — Institut für Physik & Exzellenzcluster PRISMA⁺, Johannes Gutenberg-Universität Mainz

The MainzTPC is an experimental dual-phase xenon time projection chamber (TPC) dedicated to studying scintillation and ionization processes in liquid xenon for low-energy electronic and nuclear recoils. Its design has been optimized for use as the primary target in Compton and neutron scattering experiments to measure recoil energies in liquid xenon down to 1 keV.
To address known instabilities in the liquid level of the MainzTPC, we observed the liquid-gas interface using commercially available cameras and aim to improve the level meters and level control based on these observations. Additionally, the MainzTPC is being redesigned to accommodate an array of silicon photomultipliers (SiPMs) instead of the top photomultiplier tube (PMT) and eight avalanche photodiodes (APDs) to improve position resolution in x and y. Both of these changes require a complete redesign of the TPC and its infrastructure. We report on the status of this work.

Keywords: Dark Matter; Xenon time projection chamber; WIMP search; Particle Detector