Würzburg 2018 – scientific programme

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T: Fachverband Teilchenphysik

T 52: Suche nach dunkler Materie III

T 52.8: Talk

Wednesday, March 21, 2018, 18:25–18:40, Philo-HS5

XEBRA - A test platform for liquid xenon detectors — •Patrick Meinhardt — Physiklalisches Institut, Freiburg, Deutschland

Dual-phase time projection chambers (TPCs) filled with liquid xenon (LXe) are a widely-used technique for the direct search for dark matter in the form of weakly interacting massive particles (WIMPs). The future DARWIN experiment will use a multi-ton LXe TPC to improve the WIMP-nucleon scattering sensitivity to the neutrino floor, defined by irreducible neutrino-nucleus interactions. In order to realize DARWIN, new detection concepts need to be developed and the background of the instrument needs to be reduced compared to the state-of-the-art. XEBRA (XEnon Based Research Apparatus) is a cryogenic test platform to investigate detection technologies and methods of background reductions relevant for the DARWIN experiment. This talk will give an overview about the XEBRA setup in Freiburg, its capabilities and ongoing R&D within the ERC-funded project ULTIMATE.