April 12, 2021 at 14:15

Recent results and status of the XENON dark matter project

What: Recent results and status of the XENON dark matter project

When: April 12, 2021 at 14:15

Where: https://syddanskuni.zoom.us/j/66271887069

Who: Laura Baudis (University of Zurich)

The primary aim of the XENON project is to directly detect dark matter particles in ultra-sensitive, low-background detectors, with liquid xenon as target material. The XENON1T experiment at the Laboratori Nazionali del Gran Sasso (LNGS) in Italy acquired data until the end of 2018. At its core, it housed a two-phase (liquid/gas) xenon time projection chamber with 2 tons (3.3 tons in total) of liquid xenon. Built to search for Weakly Interacting Massive Particles as dark matter candidates, it was also sensitive to other rare interactions, due to its unprecedented low background noise. In late 2020, the XENON collaboration reported an excess of electronic recoil events at low energies. After an introduction to the liquid xenon technology, I will discuss the most recent XENON1T result and present the status of XENONnT, which operates a new TPC with 6 tons of liquid xenon (8.6 tons in total). Currently in commissioning stage at LNGS, XENONnT will start a first science run in April 2021.