Conveners
Session II
- María Martínez (CAPA/Univ. of Zaragoza)
As liquid argon (LAr) detectors are made at progressively larger sizes, accurate models of LAr optical properties become increasingly important for simulating light transport, understanding signals, and developing analyses. The refractive index, group velocity, and Rayleigh scattering length are particularly important for VUV and visible photons in detectors with diameters much greater than...
DarkSide-20k is a direct dark matter search experiment, that looks for Weakly Interacting Massive Particle (WIMP) events. The detector is based on an ultrapure liquid Argon double-phase Time Projection Chamber, which will be located at Laboratori Nazionali del Gran Sasso. In rare event search experiments (like the DarkSide case), it is crucial to keep under control any background sources. In...
DARWIN (DARk matter WImp search with liquid xenoN) is an upcoming experiment designed to address the enigmatic nature of dark matter and neutrinos. With a 40-tonne liquid xenon sensitive target, DARWIN aims to explore the entire accessible parameter space down to the neutrino floor limitation for Weakly Interacting Massive Particles (WIMPs). Moreover, this low-background, low-threshold...
The DARWIN observatory is a proposed multi-purpose experiment for dark matter and neutrino physics, featuring a 50 tonne (40 tonnes active) dual-phase xenon time projection chamber. To test key technological concepts required for the realization of DARWIN, we built Xenoscope at the University of Zurich, a full-scale vertical demonstrator using 400 kg of liquid xenon (LXe). It will be used as a...
The DarkSide-20k experiment searches for dark matter by looking for interactions of WIMPs in a 50 tonnes target of liquid argon using double-phase time projection chamber technology. The key component of the experiment is low radioactivity argon depleted in the isotope Ar.
The supply chain begins with the Urania plant in Colorado, which can produce argon at a purity of 99.99% from a CO stream...
Assessing the purity of the underground argon in terms of Ar-39 is crucial to ensure the successful operation of DarkSide-20k (DS-20k), a next-generation dark matter detector under construction by the Global Argon Dark Matter Collaboration (GADMC). To achieve this goal, the GADMC is constructing the DArTinArDM experiment at the LSC laboratory in Spain.
The radiopure DArT chamber (~1 liter),...
The use of large amounts of low-radioactivity Argon is envisaged in the context of different projects related to rare event searches like the direct detection of dark matter or neutrino studies.
Material activation due to exposure to cosmic rays may become an important background source for experiments investigating these phenomena.
In the case of DarkSide-20k, the extraction and...
