Our paper Benchmarking the design of the cryogenics system for the underground argon in DarkSide-20k is on the arXiv today: http://arxiv.org/abs/2408.14071. The paper discusses the current design status of the system in view of the DarkSide-20k requirements, shows the benchmarking and testing efforts of its integral system components in a dedicated testing platform at CERN and LNGS, outlines implications of the results for the final system design and provides an outlook to ongoing activities. I am very proud that I was part of the team who pushed this project through, leading the benchmarking at LNGS and the paper writing. Congratulations to the entire team involved and thanks to those colleagues who spent their time reviewing the manuscript internally or who were involved in the editorial process.

New paper on the arXiv! In arXiv:2303.13963 my former group at UZH presents first electron drift measurements in liquid xenon with a 53 cm purity monitor in Xenoscope, a vertical DARWIN demonstrator. We present drift speed and diffusion measurements from a several-months run at 25–75 V/cm drift field. The highest electron lifetime reached was (664±23) µs. It also contains a description and the commissioning performance of the liquid recovery system BoX which was part of my PhD work. In the next phase, the purity monitor will be replaced by a 2.6 m TPC, built to directly demonstrate a drift over the full DARWIN height.

Edit 21 August 2023: The article is now published: Eur. Phys. J. C 83 717 (2023).