Conveners
Parallel 2A - Direct detection I
- Jochen Schieck (Austrian Academy of Sciences (AT))
Parallel 2A - Direct detection I
- Valentyna Mokina (HEPHY)
The Scintillating Bubble Chamber (SBC) experiment will combine the well-established liquid argon and bubble chamber technologies to search for low-mass dark matter. SBC benefits from the excellent electron-recoil insensitivity and alpha-neutron discrimination inherent in bubble chambers with the addition of energy reconstruction provided from the scintillation signal. Noble liquids can be...
The PICO-60 C$_3$F$_8$ dark matter detector is a bubble chamber located at SNOLAB, 2 km underground in Sudbury, Ontario, Canada using 52 kg of octafluoropropane (C$_3$F$_8$) as the target fluid. This experiment reached exposures of 1404 kg-day at a 2.45-keV thermodynamic threshold and 1167 kg-day at 3.29-keV. The physics program of PICO bubble chambers will be presented in this talk, including...
The NEWS-G collaboration is searching for light dark matter using spherical proportional counters. Access to the mass range from 50 MeV to 10 GeV is enabled by the combination of low energy threshold, light gaseous targets (H, He, Ne), and highly radio-pure detector construction. Initial NEWS-G results obtained with SEDINE, a 60 cm in diameter spherical proportional counter operating at the...
The NEWS-G collaboration is searching for light dark matter using spherical proportional counters. Access to the mass range from 50 MeV to 10 GeV is enabled by the combination of low energy threshold, light gaseous targets (H, He, Ne), and highly radio-pure detector construction. Initial NEWS-G results obtained with SEDINE, a 60 cm in diameter spherical proportional counter operating at the...
DEAP-3600 is a WIMP dark matter direct detection experiment located at SNOLAB. The detector consists of a 3.3 tonne volume of liquid argon instrumented with 255 photomultipliers attached to an acrylic vessel to detect the scintillation light produced by nuclear recoils. DEAP-3600 has set world leading limits on spin-independent WIMP dark matter interactions on argon and most recently the first...
The DARWIN observatory is a proposed next-generation direct Dark Matter search experiment. Out of its 50t total natural xenon inventory, 40t will be inside a dual-phase Time Projection Chamber (TPC). With its unprecedented sensitivity for WIMPs down to the so-called neutrino floor, DARWIN will also serve as an observatory for rare processes such as the search for neutrinoless double beta...
XENONnT was successfully commissioned in 2021 and has started science data taking. In addition to the new TPC, the experiment was augmented by a new water Cherenkov neutron-veto surrounding the central detector. In this talk, we present the first results of XENONnT’s nuclear recoil (NR) response calibration as well as the calibration of the neutron-veto detection efficiency. This NR...
The growing interest in the interactions between dark matter particles and electrons has received a further boost by the observation of an excess in electron recoil events in the XENON1T experiment. Of particular interest are dark matter models in which the scattering process is inelastic, such that the ground state can upscatter into an excited state. The subsequent exothermic downscattering...
LUX-ZEPLIN (LZ) is a dark matter direct detection experiment located at the Sanford Underground Research Facility in Lead, South Dakota. The experiment consists of a dual-phase xenon Time Projection Chamber with an active volume of 7 tonnes (5.6 tonne fiducial), shielded by an active liquid xenon skin region, an active gadolinium-loaded liquid scintillator veto, and an ultrapure water veto. LZ...
Darkside-20k will exploit the physical and chemical properties of liquid argon housed within a large dual-phase time project chamber (TPC) in its direct search for dark matter. The TPC will utilize a compact, integrated design with many novel features to enable the 20t fiducial volume of underground argon. Underground argon (UAr) is sourced from underground CO2 wells and depleted in the...
DarkSide-50 is a direct WIMP dark matter detection experiment at Laboratori Nazionali del Gran Sasso (LNGS) that used argon as the target material. Exploiting the ionization signal from a dual-phase time projection chamber (TPC) filled with low radioactivity argon from an underground source, it has set the strongest limit against WIMP with a mass in the GeV/c2 region. A new analysis has...
DEAP-3600 is a WIMP dark matter direct-detection experiment located 2 km underground at SNOLAB (Canada), which uses liquid argon as the target material. The detector consists of 3.3 tonnes of liquid argon in a large acrylic cryostat instrumented with 255 photomultiplier tubes.
In this talk, we first analyze our data exploring different non-relativistic effective operators for the Dark...
