Daniel Poulson
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View article: Simulations of muon imaging with the LANL GMT detector for spent nuclear fuel cask content verification
Simulations of muon imaging with the LANL GMT detector for spent nuclear fuel cask content verification Open
Atmospheric muons are typically high energy, highly penetrating charged particles. They interact with matter primarily through multiple Coulomb scatterings. Muon scattering intensities can be used to characterize the density and atomic num…
View article: Experimental study of multiple-orientation muon tomography with image optimization in sparse data environments
Experimental study of multiple-orientation muon tomography with image optimization in sparse data environments Open
Due to the high penetrating power of cosmic-ray muons, they can be used to probe very thick and dense objects. As muons are charged particles, they can be tracked by ionization detectors, determining the position and direction of the muons…
View article: Testing meson portal dark sector solutions to the MiniBooNE anomaly at the Coherent CAPTAIN Mills experiment
Testing meson portal dark sector solutions to the MiniBooNE anomaly at the Coherent CAPTAIN Mills experiment Open
A solution to the MiniBooNE excess invoking rare three-body decays of the charged pions and kaons to new states in the MeV mass scale was recently proposed as a dark-sector explanation. This class of solution illuminates the fact that, whi…
View article: Determination of the uranium content of storage containers filled with waste from Fukushima using cosmic ray data
Determination of the uranium content of storage containers filled with waste from Fukushima using cosmic ray data Open
This report presents the results of an experimental study of cosmic ray tomography aimed at determining the uranium contents of waste containers filled with waste from Fukushima. Data, taken using the Giant Muon Tracker, were obtained on a…
View article: The Mini Astrophysical MeV Background Observatory (MAMBO) CubeSat mission for gamma-ray astronomy
The Mini Astrophysical MeV Background Observatory (MAMBO) CubeSat mission for gamma-ray astronomy Open
The origin of the cosmic diffuse gamma-ray (CDG) background in the 0.3–10 MeV energy range is a mystery that has persisted for over 40 years. The Mini Astrophysical MeV Background Observatory (MAMBO) is a new CubeSat mission under developm…
View article: First dark matter search results from Coherent CAPTAIN-Mills
First dark matter search results from Coherent CAPTAIN-Mills Open
This paper describes the operation of the Coherent CAPTAIN-Mills (CCM) detector located at the Los Alamos Neutron Science Center at Los Alamos National Laboratory. CCM is a 10-ton liquid argon detector located 20 meters from a high flux ne…
View article: First Leptophobic Dark Matter Search from the Coherent–CAPTAIN-Mills Liquid Argon Detector
First Leptophobic Dark Matter Search from the Coherent–CAPTAIN-Mills Liquid Argon Detector Open
We report the first results of a search for leptophobic dark matter (DM) from the 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) w…
View article: First Leptophobic Dark Matter Search from Coherent CAPTAIN-Mills
First Leptophobic Dark Matter Search from Coherent CAPTAIN-Mills Open
We report the first results of a search for leptophobic dark matter (DM) from the Coherent CAPTAIN-Mills (CCM) liquid argon (LAr) detector. An engineering run with 120 photomultiplier tubes (PMTs) and $17.9 \times 10^{20}$ protons-on-targe…
View article: Demonstration of transmission high energy electron microscopy
Demonstration of transmission high energy electron microscopy Open
Charged particle radiography with 800 MeV protons has been used for decades at LANL and developed around the world to study dynamic material properties. Recently, charged particle radiography has been demonstrated with the use of high-ener…
View article: INTERROGATION OF SPENT NUCLEAR FUEL CASKS USING COSMIC-RAY MUON COMPUTED TOMOGRAPHY
INTERROGATION OF SPENT NUCLEAR FUEL CASKS USING COSMIC-RAY MUON COMPUTED TOMOGRAPHY Open
Properly accounting and safeguarding spent nuclear fuel are key components in the International Atomic Energy Agency’s mission of non-proliferation. Currently, no instruments are deployed that are able to verify the spent nuclear fuel cont…
View article: Demonstration of transmission high energy electron microscopy
Demonstration of transmission high energy electron microscopy Open
High energy electrons have been used to investigate an extension of transmission electron microscopy. This technique, transmission high energy electron microscopy (THEEM), provides two additional capabilities to electron microscopy. First,…
View article: Multiple-Angle Muon Radiography of a Dry Storage Cask
Multiple-Angle Muon Radiography of a Dry Storage Cask Open
A partially loaded dry storage cask was imaged using cosmic ray muons. Since the cask is large relative to the size of the muon tracking detectors, the instruments were placed at nine different positions around the cask to record data cove…
View article: Multi-GeV electron radiography for measurements of fast dynamic systems
Multi-GeV electron radiography for measurements of fast dynamic systems Open
Charged particle radiography has been developed in the past decade to provide high-resolution, muti-frame flash radiography of dynamic systems. This development has focused on proton radiography utilizing 11 MeV to 50 GeV protons for a wid…
View article: A study of CR-39 plastic charged-particle detector replacement by consumer imaging sensors
A study of CR-39 plastic charged-particle detector replacement by consumer imaging sensors Open
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 for the latest inexpensive webcam models. W…
View article: Cosmic Ray Muon Imaging of Spent Nuclear Fuel in Dry Storage Casks
Cosmic Ray Muon Imaging of Spent Nuclear Fuel in Dry Storage Casks Open
In this paper, cosmic ray muon radiography has been used to identify the absence of spent nuclear fuel bundles inside a sealed dry storage cask. The large amounts of shielding that dry storage casks use to contain radiation from the highly…
View article: Imaging the inside of thick structures using cosmic rays
Imaging the inside of thick structures using cosmic rays Open
The authors present here a new method to image reinforcement elements inside thick structures and the results of a demonstration measurement performed on a mock-up wall built at Los Alamos National Laboratory. The method, referred to as “m…