Single-view 3D reconstruction of correlated gamma-neutron sources
Abstract
We describe a new method of 3D image reconstruc-tion of neutron sources that emit correlated gammas (e.g. Cf-252, Am-Be). This category includes a vast majority of neutron sources important in nuclear threat search, safeguards and non-proliferation. Rather than requiring multiple views of the source this technique relies on the source’s intrinsic property of coincidence gamma and neutron emission. As a result only a single-view measurement of the source is required to perform the 3D reconstruction. In principle, any scatter camera sensitive to gammas and neutrons with adequate timing and interaction location resolution can perform this reconstruction. Using a neutron double scatter technique, we can calculate a conical surface of possible source locations. By including the time to a correlated gamma we further constrain the source location in three-dimensions by solving for the source-to-detector distance along the surface of said cone. As a proof of concept we applied these reconstruction techniques on measurements taken with the the Mobile Imager of Neutrons for Emergency Responders (MINER). Two Cf-252 sources measured at 50 and 60 cm from the center of the detector were resolved in their varying depth with average radial distance relative resolution of 26%. To demonstrate the technique’s potential with anmore »
- Authors:
-
[1];
- Univ. of Michigan, Ann Arbor, MI (United States)
- Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-CA), Livermore, CA (United States); Univ. of Michigan, Ann Arbor, MI (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation
- OSTI Identifier:
- 1340522
- Alternate Identifier(s):
- OSTI ID: 1366704
- Report Number(s):
- SAND-2016-10226J
Journal ID: ISSN 0018-9499; 648213
- Grant/Contract Number:
- AC04-94AL85000; NA0002534
- Resource Type:
- Accepted Manuscript
- Journal Name:
- IEEE Transactions on Nuclear Science
- Additional Journal Information:
- Journal Volume: 64; Journal Issue: 7; Journal ID: ISSN 0018-9499
- Publisher:
- IEEE
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; neutrons; position measurement; cameras; three-dimensional displays; image reconstruction; detectors
Citation Formats
Monterial, Mateusz, Marleau, Peter, and Pozzi, Sara A. Single-view 3D reconstruction of correlated gamma-neutron sources. United States: N. p., 2017.
Web. doi:10.1109/tns.2017.2647952.
Monterial, Mateusz, Marleau, Peter, & Pozzi, Sara A. Single-view 3D reconstruction of correlated gamma-neutron sources. United States. https://doi.org/10.1109/tns.2017.2647952
Monterial, Mateusz, Marleau, Peter, and Pozzi, Sara A. Thu .
"Single-view 3D reconstruction of correlated gamma-neutron sources". United States. https://doi.org/10.1109/tns.2017.2647952. https://www.osti.gov/servlets/purl/1340522.
@article{osti_1340522,
title = {Single-view 3D reconstruction of correlated gamma-neutron sources},
author = {Monterial, Mateusz and Marleau, Peter and Pozzi, Sara A.},
abstractNote = {We describe a new method of 3D image reconstruc-tion of neutron sources that emit correlated gammas (e.g. Cf-252, Am-Be). This category includes a vast majority of neutron sources important in nuclear threat search, safeguards and non-proliferation. Rather than requiring multiple views of the source this technique relies on the source’s intrinsic property of coincidence gamma and neutron emission. As a result only a single-view measurement of the source is required to perform the 3D reconstruction. In principle, any scatter camera sensitive to gammas and neutrons with adequate timing and interaction location resolution can perform this reconstruction. Using a neutron double scatter technique, we can calculate a conical surface of possible source locations. By including the time to a correlated gamma we further constrain the source location in three-dimensions by solving for the source-to-detector distance along the surface of said cone. As a proof of concept we applied these reconstruction techniques on measurements taken with the the Mobile Imager of Neutrons for Emergency Responders (MINER). Two Cf-252 sources measured at 50 and 60 cm from the center of the detector were resolved in their varying depth with average radial distance relative resolution of 26%. To demonstrate the technique’s potential with an optimized system we simulated the measurement in MCNPX-PoliMi assuming timing resolution of 200 ps (from 2 ns in the current system) and source interaction location resolution of 5 mm (from 3 cm). These simulated improvements in scatter camera performance resulted in radial distance relative resolution decreasing to an average of 11%.},
doi = {10.1109/tns.2017.2647952},
journal = {IEEE Transactions on Nuclear Science},
number = 7,
volume = 64,
place = {United States},
year = {Thu Jan 05 00:00:00 EST 2017},
month = {Thu Jan 05 00:00:00 EST 2017}
}
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