Publications
Showing 32 results for Author: Jake D. Daughhetee
May, 2026
Journal
Associated particle imaging of neutron inelastic scatter: 3-D reconstruction, capabilities, and challenges
Associated particle imaging (API) offers unique advantages for 3-D imaging of neutron inelastic scatter, including single-view tomographic imaging and data acquisition when access is limited to only one side of the interrogated object. However, widespread adoption of neutron inelastic scatter imaging has been impeded by several inherent challenges, most prominently spatial…
Mar, 2026
Conference Paper
Progress Toward Gamma-Ray Imaging for Automated Holdup Measurement in Gloveboxes
Shielded gloveboxes are currently being constructed to facilitate dilution and disposal of many tons of excess plutonium oxide. Measuring holdup in these gloveboxes is expected to be challenging because of the limited available lines of sight through the glovebox shielding. A system of gamma-ray imagers is being developed to provide localization and quantification for hold…
Mar, 2026
Conference Paper
Detailed Characterization of CZT Detector Response for Improved Coded-Aperture Imaging Performance
Gamma-ray imaging is a powerful method for locating and quantifying sources of radiation. The coded-aperture technique demonstrates superior angular resolution in comparison to other methods (e.g., Compton reconstruction). In this method, a mask constructed of highly attenuating material encodes the scene as a shadow pattern on a position-sensitive detector; this pattern c…
Aug, 2025
ORNL Report
Multimodal Data Fusion with 3D Gamma-Ray Imaging for Safeguards 2024 Annual Report
Sep, 2024
Journal
Measurement of 𝑛𝑎𝑡Pb(𝜈𝑒,X𝑛) production with a stopped-pion neutrino source
Using neutrinos produced at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL), the COHERENT collaboration has studied the Pb(𝜈𝑒,X𝑛) process with a lead neutrino-induced-neutron (NIN) detector. Data from this detector are fit jointly with previously collected COHERENT data on this process. A combined analysis of the two datasets yields a cross se…
Sep, 2024
Journal
Measurement of Electron-Neutrino Charged-Current Cross Sections on 127I with the COHERENT NaI𝜈E Detector
Using an 185-kg NaI[Tl] array, COHERENT has measured the inclusive electron-neutrino charged-current cross section on 127I with pion decay-at-rest neutrinos produced by the Spallation Neutron Source at Oak Ridge National Laboratory. Iodine is one the heaviest targets for which low-energy (≤50 MeV) inelastic neutrino-nucleus processes have been measured, and this is the fi…
Sep, 2024
Journal
Accessing new physics with an undoped, cryogenic CsI CEvNS detector for COHERENT at the SNS
We consider the potential for a 10 kg undoped cryogenic CsI detector operating at the Spallation Neutron Source to measure coherent elastic neutrino-nucleus scattering and its sensitivity to discover new physics beyond the standard model (BSM). Through a combination of increased event rate, lower threshold, and good timing resolution, such a detector would significantly im…
Sep, 2024
Conference Paper
Development of techniques for gantryless associated-particle imaging
To move fast-neutron radiography using the associated-particle imaging technique from the laboratory to the field, the development of new analysis techniques is required. In particular, the relative positions of the source and detectors need to be determined when they have been placed by hand, the normalization for a particular source–detector geometry needs to be determin…
Sep, 2024
ORNL Report
2023 Annual Report: Multimodal Data Fusion with 3D Gamma-Ray Imaging for Safeguards
Aug, 2024
ORNL Report
2024 Mid-Year Report: Multimodal Data Fusion with 3D Gamma-Ray Imaging for Safeguards
Dec, 2023
Journal
Development of a 83 mKr source for the calibration of the CENNS-10 liquid argon detector
We report on the preparation of and calibration measurements with a 83mKr source for the CENNS-10 liquid argon detector. 83mKr atoms generated in the decay of a 83Rb source were introduced into the detector via injection into the Ar circulation loop. Scintillation light arising from the 9.4 keV and 32.1 keV conversion electrons in the decay of 83mKr in the detector volume…