A5087695576- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Particle accelerators and beam dynamics
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Cold Atom Physics and Bose-Einstein Condensates
- Mass Spectrometry Techniques and Applications
- Particle Detector Development and Performance
- Muon and positron interactions and applications
- Nuclear Physics and Applications
- Fusion materials and technologies
- Quantum, superfluid, helium dynamics
- Inorganic Fluorides and Related Compounds
University of Washington
2023-2024
Johannes Gutenberg University Mainz
2023-2024
The absolute scale of the neutrino mass plays a critical role in physics at every scale, from subatomic to cosmological. Measurements tritium end-point spectrum have provided most precise direct limit on scale. In this Letter, we present advances by Project 8 cyclotron radiation emission spectroscopy (CRES) technique culminating first frequency-based limit. With only cm^{3}-scale physical detection volume, m_{β}<155 eV/c^{2} (152 eV/c^{2}) is extracted background-free measurement continuous...
Neutrino mass is a key parameter in nuclear and particle physics cosmology. The Project 8 Collaboration developed an innovative method with potential to improve the current limits by more than order of magnitude. Announced paper published last September (PRL 131, 102502; see also Synopsis at https://physics.aps.org/articles/v16/s121), measures frequency radiation from tritium $\ensuremath{\beta}$-decay electrons spiraling magnetic field. In authors provide details this unique measurement...
A calorimetric detector for minimally disruptive measurements of atomic hydrogen beams is described. The calorimeter measures heat released by the recombination atoms into molecules on a thin wire. As demonstration, angular distribution beam with peak intensity $\approx 10^{16} \,{\rm{atoms}}/{(\rm{cm}^2 \rm{s})}$ measured translating wire across beam. data agree well an analytic model from thermal atom source. Using shape model, relative can be determined to 5% precision or better at any angle.
The most sensitive direct neutrino mass searches today are based on measurement of the endpoint beta spectrum tritium to infer limits unobserved recoiling neutrino. To avoid smearing associated with distribution molecular final states in T-He molecule, next generation these experiments will need employ atomic (T) rather than (T$_{2}$) sources. Following production, T can be trapped gravitational and / or magnetic bottles for experiments, if only it first cooled millikelvin temperatures....
The objective of the Cyclotron Radiation Emission Spectroscopy (CRES) technology is to build precise particle energy spectra. This achieved by identifying start frequencies charged trajectories which, when exposed an external magnetic field, leave semi-linear profiles (called tracks) in time-frequency plane. Due need for excellent instrumental resolution application, highly efficient and accurate track reconstruction methods are desired. Deep learning convolutional neural networks (CNNs) -...
Abstract Cyclotron Radiation Emission Spectroscopy (CRES) is a technique for measuring the kinetic energy of charged particles through precision measurement frequency cyclotron radiation generated by particle's motion in magnetic field. The Project 8 collaboration developing next-generation neutrino mass experiment based on CRES. One approach to use phased antenna array, which surrounds volume tritium gas, detect and measure resulting β-decay electrons. To validate feasibility this method,...
Abstract The objective of the cyclotron radiation emission spectroscopy (CRES) technology is to build precise particle energy spectra. This achieved by identifying start frequencies charged trajectories which, when exposed an external magnetic field, leave semi-linear profiles (called tracks) in time–frequency plane. Due need for excellent instrumental resolution application, highly efficient and accurate track reconstruction methods are desired. Deep learning convolutional neural networks...
Abstract Cyclotron Radiation Emission Spectroscopy (CRES) is a technique for precision measurement of the energies charged particles, which being developed by Project 8 Collaboration to measure neutrino mass using tritium beta-decay spectroscopy. seeks use CRES with sensitivity 40 meV, requiring large supply atoms stored in multi-cubic meter detector volume. Antenna arrays are one potential technology compatible an experiment this scale, but capability antenna-based depends on efficiency...
Project 8 has developed a novel technique, Cyclotron Radiation Emission Spectroscopy (CRES), for direct neutrino mass measurements. A CRES-based experiment on the beta spectrum of tritium been carried out in small-volume apparatus. We provide detailed account experiment, focusing systematic effects and analysis techniques. In Bayesian (frequentist) analysis, we measure endpoint as $18553^{+18}_{-19}$ ($18548^{+19}_{-19}$) eV set upper limits 155 (152) (90% C.L.) mass. No background events...
Cyclotron Radiation Emission Spectroscopy (CRES) is a technique for precision measurement of the energies charged particles, which being developed by Project 8 Collaboration to measure neutrino mass using tritium beta-decay spectroscopy. seeks use CRES with sensitivity 40~meV, requiring large supply atoms stored in multi-cubic meter detector volume. Antenna arrays are one potential technology compatible an experiment this scale, but capability antenna-based depends on efficiency signal...