A5069582637- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Particle Detector Development and Performance
- Nuclear Physics and Applications
- Nuclear physics research studies
- Superconducting and THz Device Technology
- Radiation Detection and Scintillator Technologies
- Advanced Thermodynamic Systems and Engines
- Spacecraft and Cryogenic Technologies
TU Wien
2023-2024
Coherent elastic neutrino-nucleus scattering and low-mass dark matter detectors rely crucially on the understanding of their response to nuclear recoils. We report first observation a recoil peak at around 112 eV induced by neutron capture. The measurement was performed with CaWO_{4} cryogenic detector from NUCLEUS experiment exposed ^{252}Cf source placed in compact moderator. identify expected structure single-γ de-excitation ^{183}W 3σ its origin capture 6σ significance. This result...
Rare-event search experiments located on-surface, such as short-baseline reactor neutrino experiments, are often limited by muon-induced background events. Highly efficient muon vetos essential to reduce the detector and reach sensitivity goals. We demonstrate feasibility of deploying organic plastic scintillators at sub-Kelvin temperatures. For NUCLEUS experiment, we developed a cryogenic veto equipped with wavelength shifting fibers silicon photo multiplier operating inside dilution...
The emission of γ-rays after neutron capture in a cryogenic detector can generate monoenergetic nuclear recoils the sub-keV regime, which is direct interest for calibration dark matter and coherent elastic neutrino-nucleus scattering experiments. Here we show that accurate predictions spectra total energy deposition induced by captures require taking into account interplay between development time deexcitation γ-ray cascade target nucleus associated atomic collisions matter. We present...
Any experiment aiming to measure rare events, like Coherent Elastic neutrino-Nucleus Scattering (CE ν NS) or hypothetical Dark Matter scattering, via nuclear recoils in cryogenic detectors relies crucially on a precise detector calibration at sub-keV energies. The Crab collaboration developed new technique based the capture of thermal neutrons inside target crystal. Together with Nucleus experiment, first measurements moderated 252 Cf neutron source and CaWO4 were taken. We observed for time...
The emission of $γ$-rays after a neutron capture in cryogenic detector can generate mono-energetic nuclear recoils the sub-keV regime, direct interest for calibration Dark Matter and Coherent Elastic Neutrino Nucleus Scattering experiments. Here we show that accurate predictions recoil spectra induced by captures require taking into account interplay between development time de-excitation $γ$-cascade target nucleus associated atomic collisions matter. We present detailed simulations coupling...