A5002758573- Nuclear Physics and Applications
- Radiation Detection and Scintillator Technologies
- Particle Detector Development and Performance
- Gamma-ray bursts and supernovae
- Astrophysics and Cosmic Phenomena
- Radiation Therapy and Dosimetry
- Atomic and Subatomic Physics Research
- Dark Matter and Cosmic Phenomena
- Solar and Space Plasma Dynamics
- Spacecraft and Cryogenic Technologies
- Medical Imaging Techniques and Applications
- Astro and Planetary Science
- Nuclear reactor physics and engineering
- Advanced X-ray and CT Imaging
- Radiation Effects in Electronics
- Pulsars and Gravitational Waves Research
- Geophysics and Gravity Measurements
- Particle physics theoretical and experimental studies
- Radioactivity and Radon Measurements
- Geophysical Methods and Applications
- Spacecraft Design and Technology
- Planetary Science and Exploration
- Graphite, nuclear technology, radiation studies
- Superconducting and THz Device Technology
- Space Technology and Applications
United States Naval Research Laboratory
2015-2024
Technology Service Corporation (United States)
2023
K Lab (United States)
2022
Louisiana State University
2022
United States Navy
2019-2020
United States Department of the Navy
2019-2020
Naval Research Laboratory Space Science Division
2014
National Academies of Sciences, Engineering, and Medicine
2012-2013
National Health Council
2013
National Postdoctoral Association
2012
The All-sky Medium Energy Gamma-ray Observatory eXplorer (AMEGO-X) is designed to identify and characterize gamma rays from extreme explosions accelerators. main science themes include: supermassive black holes their connections neutrinos cosmic rays; binary neutron star mergers the relativistic jets they produce; ray particle acceleration sources including Galactic supernovae; continuous monitoring of other astrophysical events over full sky in this important energy range. AMEGO-X will...
Abstract The sky at MeV energies is currently poorly explored. Here we present an innovative mission concept that builds upon the heritage of past and current missions improving sensitivity and, very importantly, angular resolution. This consists in combining a Compton telescope coded-mask telescope. We delineate motivation for such define scientific goals mission. Galactic Explorer with Coded Aperture Mask Telescope (GECCO) novel next-generation covering hard X-ray soft gamma-ray energies....
We outline the science opportunities in areas of searches for dark matter and new physics offered by a proposed future MeV gamma-ray telescope, Galactic Explorer with Coded Aperture Mask Compton Telescope (GECCO). point out that such an instrument would play critical role opening up discovery window particle mass or sub-MeV range, disentangling origin mysterious 511 keV line emission Center region, potentially discovering Hawking evaporation from light primordial black holes.
There is a growing interest in the science uniquely enabled by observations MeV range, particularly light of multi-messenger astrophysics. The Compton Pair (ComPair) telescope, prototype AMEGO Probe-class concept, consists four subsystems that together detect and characterize gamma rays regime. A double-sided strip silicon Tracker gives precise measure first scatter interaction tracks pair-conversion products. novel cadmium zinc telluride (CZT) detector with excellent position energy...
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...
We describe the design and performance of a position sensitive scintillator detector developed for neutron measurements. Several these detectors are to be used in assembly Fast Neutron Imaging Telescope (FNIT), an instrument with imaging energy measurement capabilities, neutrons 2-20 MeV range. FNIT was initially conceived study solar as candidate Inner Heliospheric Sentinels (IHS) program under formulation at NASA. It is now being adapted locate Special Nuclear Material (SNM) homeland...
Astronomical observations with gamma rays in the range of several hundred keV to hundreds MeV currently represent least explored energy range. To address this so-called gap, we designed and built a prototype thallium-doped CsI (CsI:Tl) calorimeter instrument using commercial off-the-shelf (COTS) silicon photomultipliers (SiPMs) front-ends, which may serve as subsystem for larger gamma-ray mission concept. During development, observed significant nonlinearity response. In addition, COTS...
The paper describes a novel detector for neutrons in the 1 to 20-MeV energy range with combined imaging and spectroscopic capabilities. Fast Neutron Imaging Telescope (FNIT) was designed detect solar from spacecraft deployed inner heliosphere. However, potential application of this instrument Special Nuclear Material (SNM) identification also examined. In either case, neutron detection relies on double elastic neutron-proton (n-p) scattering liquid scintillator. We optimized design FNIT...
There is a growing interest in astrophysics to fill the observational gamma-ray MeV gap. We, therefore, developed CsI:Tl calorimeter prototype as subsystem balloon-based Compton and Pair-production telescope known ComPair. ComPair technology demonstrator for range that comprised of 4 subsystems: double-sided silicon detector, virtual Frisch grid CdZnTe, CsI calorimeter, plastic-based anti-coincidence detector. The composed thirty logs, each with geometry 1.67 × 10 cm <sup...
The ComPair balloon instrument is a prototype gamma-ray telescope that aims to further develop technology for observing the sky in MeV regime. combines four detector subsystems enable parallel Compton scattering and pair-production detection, critical this energy range. This includes 10 layer double-sided silicon strip tracker, virtual Frisch grid low CZT calorimeter, high CsI plastic scintillator anti-coincidence detector. inaugural flight successfully launched from Columbia Scientific...
Many questions posed in the Astro2020 Decadal survey both New Messengers and Physics Cosmic Ecosystems science themes require a gamma-ray mission with capabilities exceeding those of existing (e.g. Fermi, Swift) planned COSI) observatories. ComPair, Compton Pair telescope, is prototype such next-generation mission. It had its inaugural balloon flight from Ft. Sumner, Mexico August 2023. To continue goals ComPair project to develop technologies that will enable future mission, next generation...
We report on the development of thallium-doped cesium iodide (CsI:Tl) calorimeter subsystem for All-Sky Medium-Energy Gamma-ray Observatory (AMEGO) [1]. The CsI:Tl is one three main subsystems that comprise AMEGO instrument suite; others include double-sided silicon strip detector (DSSD) tracker/converter and a cadmium zinc telluride (CZT) calorimeter. Similar to LAT Fermi Space Telescope, hodoscopic consists orthogonally layered bars. Unlike LAT, which uses PIN photodiodes, scintillation...
The Strontium Iodide Radiation Instrumentation (SIRI) is designed to space-qualify new gamma-ray detector technology for space-based astrophysical and defense applications. This offers improved energy resolution, lower power consumption reduced size compared similar systems. SIRI instrument consists of a single europiumdoped strontium iodide (SrI<sub>2</sub>:Eu) scintillation detector. crystal has an resolution 3% at 662 keV the 6.5% traditional sodium was developed terrestrial-based weapons...
Active interrogation is a method used to enhance the likelihood of detection shielded special nuclear material (SNM); an external source radiation interrogate target and stimulate fission within any SNM present. Radiation produced by process can be detected infer presence SNM. The Atomic Weapons Establishment (AWE) Naval Research Laboratory (NRL) have carried out joint experimental study into use single pulse, high-intensity sources bremsstrahlung x-rays D(\gammab, n)H photoneutrons in...