Conveners
Noble Elements: Noble Elements - 1
- Jonathan Asaadi (University of Texas Arlington)
- Jennifer Raaf (Fermilab)
Noble Elements: Noble Elements - 2
- Jonathan Asaadi (University of Texas Arlington)
- Jennifer Raaf (Fermilab)
Noble Elements: Noble Elements - 3
- Jonathan Asaadi (University of Texas Arlington)
- Jennifer Raaf (Fermilab)
Noble Elements: Noble Elements - 4
- Jonathan Asaadi (University of Texas Arlington)
- Jennifer Raaf (Fermilab)
We present s a novel and efficient device to measure wire tensions in particle physics detectors. Traditionally, a common method was to physically pluck each wire and detect its natural frequency with a laser.
In this new method, an alternating electric field across the neighboring wires vibrates the test wire in the middle. Due to the corresponding change in capacitance, a bipolar resonance...
Impurities in noble liquid detectors used for neutrino and dark matter experiments can significantly impact the quality of data. We present an experimentally verified model for describing the dynamics of impurity distributions in liquid argon (LAr) detectors. The model considers sources, sinks, and transport of impurities within and between the gas and liquid argon phases. Measurements of the...
The Deep Underground Neutrino Experiment (DUNE) is a next-generation long-baseline neutrino oscillation experiment based on liquid argon TPC (LArTPC) technology. DUNE's single-phase prototype ProtoDUNE-SP at CERN finished its 2-year Phase-1 running in July 2020, which successfully collected test beam data and cosmic ray data. The DUNE collaboration is preparing ProtoDUNE-SP Phase-2 run which...
Nuclear recoil (NR) calibrations are vital for understanding detector responses to dark matter candidates and neutrino-nucleus signals in direct detection experiments. Low-mass (<5 GeV) dark matter candidates and $^8$B neutrinos drive the need for high-statistics/low-systematic calibrations at sub-keV NR energies.
We report the results of NR calibrations in the LUX dark matter detector...
To improve detector sensitivities, neutrino physics and dark matter searches are pursuing novel low background and self-vetoing materials for components. One material of interest is poly(ethylene-2, 6-naphatalate) (PEN) for its inherent scintillating and wavelength shifting properties, as well as its commercial availability and structural stability. Commercially available PEN material is...
Liquid argon is commonly used as a detector medium for neutrino physics and dark matter experiments in part due to its copious scintillation light production in response to its excitation and ionization by charged particle interactions. As argon scintillation appears in the vacuum ultraviolet (VUV) regime and is difficult to detect, wavelength-shifting materials are typically used to convert...
Most experiments using noble elements, past, current or planned, have exploited the abundant light yield in the vacuum ultraviolet (VUV) region ranging from 78-80 nm (Ne and He) to 128 nm (Ar), 150 nm (Kr) and 175 nm (Xe). It has however been known that noble elements, when excited by ionizing radiation, do also emit light at longer wavelengths, up to the near-infrared (NIR) although many...
Argon has advantages over xenon in cost, kinetic matching, and ease-of-purification when used as a target for the detection of nuclear recoils from coherent neutrino-nucleus scattering (CENNS) and light WIMP dark matter. However, the detection of low-energy ionization signals in argon by the proportional scintillation signal (S2) mechanism is frustrated by the long lifetime and short...
As noble elements like liquid xenon and argon have become an indispensable mode of particle detection, it has become increasingly crucial to understand and model their intrinsic physics. The Noble Element Simulation Technique (NEST) allows us to do this by offering a comprehensive, mature framework to simulate the atomic and nuclear physics of energy deposition and the resulting detector...
With radiopurity controls and small design modifications a kton-scale liquid argon time projection chamber similar to DUNE could be used for enhanced low energy physics searches. This includes improved sensitivity to supernova and solar neutrinos, and even weakly interacting massive particle dark matter. This talk will focus on tools being developed to support a large-scale radiopurity assay...
As an advanced neutrino detector technology the Liquid Argon Time Projection Chamber (LArTPC) is widely used in recent and upcoming accelerator neutrino experiments. It features a low energy threshold and high spatial resolution that allow for comprehensive reconstruction of event topologies. Both hardware and reconstruction technologies are evolving to improve the LArTPC performance. In...
A challenge in large LArTPCs is efficient photon collection for low energy, MeV-scale, deposits. Past studies have demonstrated that augmenting traditional ionization-based calorimetry with information from the scintillation signals can greatly improve the precision of measurements of energy deposited. We propose the use of photo-converting dopants to efficiently convert the scintillation...
A large pixelated liquid argon detector could offer great advantages in studying neutrinos. The 3D imaging capabilities of such a detector could enhance and expand the physics reach of future large-scale detectors such as DUNE. We will present the current status of the Q-Pix development. This novel concept uses continuously integrating low-power charge-sensitive chips that sends signals once...
The NEXT experiment is a neutrino physics program searching for neutrinoless double beta decay using a high pressure gaseous xenon time projection chamber (HPGXeTPC). The HPGXeTPC technology offers several advantages, including excellent energy resolution, topological event discrimination, and low background. NEXT excels on each of these fronts, achieving 1% FWHM energy resolution at 2.6 MeV...
We will present a discussion of our revolutionary new detector technology, the “Snowball Chamber,” which is based on the phase transition (of liquid to solid) for metastable fluids, and has been shown to be neutron-sensitive. A water-based supercooled detector has the potential to move past the Neutrino "Fog," and extend the reach of direct detection dark matter experiments to GeV-scale WIMP...
The Scintillating Bubble Chamber (SBC) is a rapidly developing novel technique for 0.7 - 7 GeV nuclear recoil detection. Demonstrations in liquid xenon at the few-gram scale have confirmed that this technique combines the event-by-event energy resolution of a liquid-noble scintillation detector with the world-leading electron-recoil discrimination capability of the bubble chamber, and in fact...
HeRALD - Helium Roton Apparatus for Light Dark Matter uses bolometers with TES readout to detect signals in superfluid Helium-4 from light dark matter. The low energy threshold enabled by cryogenic bolometers, with signal amplified by quantum evaporation of helium atoms from phonons/rotons in superfluid Helium-4 and the low atomic mass of Helium-4 with better kinematic matching for light dark...