Karlsruhe 2024 – scientific programme

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T: Fachverband Teilchenphysik

T 98: Search for Dark Matter 4

T 98.1: Talk

Thursday, March 7, 2024, 16:00–16:15, Geb. 30.35: HSI

Design and Commissioning of the MainzTPC2 — •Constantin Szyszka, Uwe Oberlack, Alexander Deisting, Christopher Hils, and Jan Lommler — Institut für Physik & Exzellenzcluster PRISMA⁺, Johannes Gutenberg-Universität Mainz
The MainzTPC is an experimental dual-phase xenon time projection chamber (TPC) dedicated to the study of scintillation and ionization processes of liquid xenon for low-energy electronic and nuclear recoils. It features a signal readout with two PMTs and eight APDs, enabling 3D position reconstruction. The TPC also allows to study the influence of the drift field’s strength on the scintillation process. Its design has been optimized for the use as primary target in Compton scattering experiments to measure recoil energies in liquid xenon down to 1 keV.
The MainzTPC is being redesigned to accommodate a SiPM array instead of the top PMT and APDs to improve position resolution in x and y. 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. We report on the status of this work.

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