A5001293126- Particle Detector Development and Performance
- Particle physics theoretical and experimental studies
- Radiation Detection and Scintillator Technologies
- Astrophysics and Cosmic Phenomena
- Nuclear Physics and Applications
- Dark Matter and Cosmic Phenomena
- Graphite, nuclear technology, radiation studies
- Nuclear reactor physics and engineering
- Atomic and Subatomic Physics Research
- Space Technology and Applications
- Neutrino Physics Research
- Nuclear and radioactivity studies
- Radiation Shielding Materials Analysis
- Radioactivity and Radon Measurements
- Photocathodes and Microchannel Plates
- Superconducting Materials and Applications
- Spacecraft Design and Technology
- Muon and positron interactions and applications
- Electron and X-Ray Spectroscopy Techniques
- Quantum Chromodynamics and Particle Interactions
- Nuclear Materials and Properties
- Advanced X-ray and CT Imaging
- Integrated Circuits and Semiconductor Failure Analysis
- Geophysical and Geoelectrical Methods
- Particle Accelerators and Free-Electron Lasers
Los Alamos National Laboratory
2015-2024
IMDEA Materials
2020
SLAC National Accelerator Laboratory
2020
Colorado School of Mines
2020
Argonne National Laboratory
2020
University of New Mexico
2016-2017
University of Colorado Boulder
2013
University of Colorado System
2013
This paper describes the operation of Coherent CAPTAIN-Mills (CCM) detector located at Los Alamos Neutron Science Center National Laboratory. CCM is a 10-ton liquid argon 20 meters from high flux neutron/neutrino source and designed to search for sterile neutrinos (${\ensuremath{\nu}}_{s}$'s) light dark matter (LDM). An engineering run was performed in fall 2019 study characteristics CCM120 by searching coherent scattering signals consistent with ${\ensuremath{\nu}}_{s}$'s LDM resulting...
We report the first results of a search for leptophobic dark matter (DM) from Coherent-CAPTAIN-Mills (CCM) liquid argon (LAr) detector. An engineering run with 120 photomultiplier tubes (PMTs) and 17.9×10^{20} protons on target (POT) was performed in fall 2019 to study characteristics CCM The operation this 10-ton detector strictly light based threshold 50 keV used coherent elastic scattering off nuclei detect DM. Despite only 1.5 months accumulated luminosity, contaminated LAr, nonoptimized...
A solution to the MiniBooNE excess invoking rare three-body decays of charged pions and kaons new states in MeV mass scale was recently proposed as a dark-sector explanation. This class illuminates fact that, while were focused target-mode run, their decay products isotropically suppressed beam-dump-mode run which no observed. suggests physics correlated mesonic sector. We investigate an extended set phenomenological models that can explain dark sector solution, utilizing long-lived...
Gamma-rays, the most energetic photons, carry information from far reaches of extragalactic space with minimal interaction or loss information. They bring messages about particle acceleration in environments so extreme they cannot be reproduced on earth for a closer look. Gamma-ray astrophysics is complementary collider work that physicists and astroparticle are often one same. instruments, especially Fermi Space Telescope, have been pivotal major multi-messenger discoveries over past...
High energy electrons have been used to investigate an extension of transmission electron microscopy. This technique, high microscopy (THEEM), provides two additional capabilities First, are more penetrating than low electrons, and thus, they able image through thicker samples. Second, the accelerating mode a radio-frequency linear accelerator fast exposures, down 1 ps, which ideal for flash radiography, making THEEM well suited study evolution material processes under dynamic conditions....
The authors present here a new method to image reinforcement elements inside thick structures and the results of demonstration measurement performed on mock-up wall built at Los Alamos National Laboratory. method, referred as “multiple scattering muon radiography”, relies use cosmic-ray muons probes. work described in this article was prove viability technique means interior dome Florence Cathedral Santa Maria del Fiore, one UNESCO World Heritage sites among highest profile buildings...
Charged particle radiography has been developed in the past decade to provide high-resolution, muti-frame flash of dynamic systems. This development focused on proton utilizing 11 MeV 50 GeV protons for a wide range measurements. Recently, these techniques are being applied use high energy electrons applications at future LANL MaRIE facility. At Multi-GeV may be used diagnose small, quickly evolving systems, requiring resolution and frame rates beyond capability existing 800 radiography. The...
Consumer imaging sensors (CIS) are examined for real-time charged-particle detection and CR-39 plastic detector replacement. Removing cover glass from CIS is hard if not impossible, in particular the latest inexpensive webcam models. We show that $10-class sensitive to MeV higher energy protons α-particles by using a 90Sr β-source with its place. Indirect, real-time, high-resolution also feasible when combining ZnS:Ag phosphor screen optics. Noise reduction nevertheless important indirect approach.
The origin of the cosmic diffuse gamma-ray (CDG) background in 0.3–10 MeV energy range is a mystery that has persisted for over 40 years. Mini Astrophysical Background Observatory (MAMBO) new CubeSat mission under development at Los Alamos National Laboratory with goal addressing this longstanding puzzle. concept motivated by fact that, since CDG relatively bright, only small detector required to make high-quality measurements it. Indeed, sensitivity space-based instruments limited not size,...
Observing cosmic sources in the medium-energy gamma-ray regime (~0.4 – 10 MeV) requires an efficient instrument with good angular resolution and background rejection. Artificial single-crystal diamond detectors (SCDDs) have comparable energy ranges, resolution, threshold levels as traditional silicon solid-state (SSDs), but faster rise times (~1 ns), improved radiation hardness, are generally insensitive to light temperature. Here we present work preliminary pairing of artificial...