Electron transport measurements in liquid xenon with Xenoscope, a large-scale DARWIN demonstrator

Understand

There is a compelling physics case for a large, xenon-based underground detector devoted to dark matter and other rare-event searches.

• A two-phase time projection chamber as inner detector allows for a good energy resolution, a three-dimensional position determination of the interaction site and particle discrimination.
• To study challenges related to the construction and operation of a multi-tonne scale detector, we have designed and constructed a vertical, full-scale demonstrator for the DARWIN experiment at the University of Zurich.
• Here we present first results from a several-months run with 343 kg of xenon and electron drift lifetime and transport measurements with a 53 cm tall purity monitor immersed in the cryogenic liquid.