The XLZD (XENON-LZ-DARWIN) collaboration is developing the next-generation observatory for dark matter, neutrino and rare-event physics. The detector will use a dual-phase xenon time projection chamber (TPC) with 60 tonnes of active xenon in a volume of approximately 3 meters in both height and diameter.
Xenoscope, at the University of Zurich, is a vertical demonstrator built to address the...
The nature of dark matter remains unknown and its origin is currently one of the most important questions in physics. Direct searches for WIMP dark matter particle interactions with ordinary matter are carried out with large detectors located in underground laboratories to suppress the background of cosmic rays. This talk will introduce the DarkSide-20k detector, now under construction in the...
Within the DarkSide Program, which aims at the direct detection of Weakly Interacting Massive Particles (WIMPs), the DarkSide-20k experiment is currently under construction at LNGS. It is based on a next-generation dual-phase liquid argon Time Projection Chamber (TPC). The Proto-0 project, currently running at the DarkMatter facility in Naples (Italy), was designed to demonstrate the viability...
DarkSide-20k is a dark matter search experiment based on a dual-phase liquid argon time projection chamber (LAr TPC), currently under construction at the Laboratori Nazionali del Gran Sasso (LNGS), Italy. The detector will use 100 tonnes of underground-sourced argon and custom cryogenic silicon photomultiplier (SiPM) arrays for efficient detection of scintillation light within a novel...
A portable analyser of the Liquid Argon (LAr) scintillation light (Scintillation Analyser) has been built. It allows to perform fast analysis of the lifetime of the argon triplet excitation state. The system was originally used to monitor the quality of LAr after its purification during filling of the LEGEND-200 cryostat. High purity of the argon (0.1 ppm for water, nitrogen and oxygen) was...
Liquid xenon (LXe) has become a cornerstone medium for rare event detection, including dark matter searches, neutrino physics, and neutrinoless double beta decay experiments. These applications demand ultra-low background environments, where even a trace amount of impurity—such as krypton, radon, or electronegative molecules—can significantly degrade the sensitivity of the detector.
In this...
In recent years, liquid xenon detectors have played a crucial role in dark matter searches and neutrino physics. However, noble gas impurities such as krypton, argon and radon contribute significantly to electron backgrounds in these detectors. The PandaX-4T experiment recently reported its WIMP search results based on a 1.54 tonne-year exposure, where radon accounted for approximately half of...
Dual-phase noble liquid time projection chambers (TPCs) are a leading technology in the direct detection of weakly interacting massive particles (WIMPs), one of the most promising dark matter candidates. In such detectors, the strength and uniformity of both the drift and electroluminescence electric fields are critical for maximizing signal sensitivity and minimizing background.
DarkSide-20k...
DArT-in-ArDM: A Dedicated Detector for 39Ar Characterization in Underground Argon
DarkSide-20k, the next-generation dual-phase liquid argon TPC under construction at LNGS, is set to push the boundaries of the global search for WIMP dark matter. A crucial requirement for its success relies on the use of underground argon (UAr) depleted in cosmogenic 39Ar with respect to atmospheric argon (AAr)...
Liquid argon (LAr) has been used in neutrino and dark matter experiments as an active medium thanks to its excellent properties in charge yield and transport as well as its capacity as a scintillator. We will present the preparation of a compact test facility with a volume of 40 ${\it l}$ LAr to fully characterise the response of LAr as a scintillation detector for the LEGEND-1000 experiment....
Modern experiments based on registration of scattering of neutral particles (neutrinos, neutrons, WIMPs, etc.) on ultra-low-background targets of liquid and compressed noble gases require a reduction in the energy threshold for success. This can only be achieved by reducing the natural radioactive background of both the target itself and the detector's structural materials. As the target mass...
