The Single-Volume Scatter Camera

Conference · 01 August 2020

DOI:https://doi.org/10.1117/12.2569995· OSTI ID:1651263

Manfredi, Juan ^[1]; Adamek, Evan ^[2]; Brown, Joshua A. ^[3]; Brubaker, Erik ^[2]; Cabrera-Palmer, Belkis ^[2]; Cates, Joshua ^[4]; Dorril, Ryan ^[5]; Druetzler, Andrew ^[5]; Elam, Jeff ^[6]; Feng, Patrick ^[5]; Folsom, Micah J. ^[2]; Galindo-Tellez, Aline ^[7]; Goldblum, Bethany ^[3]; Hausladen, Paul ^[2]; Kaneshige, Nathan ^[5]; Keefe, Kevin ^[5]; Thibault Laplace, Thibault ^[4]; Learned, John ^[7]; Mane, Anil ^[2]; Marleau, Peter ^[2] ; Mattingly, John ^[8]; Mishra, Mudit ^[8]; Moustafa, Ahmed ^[2]; Nattress, Jason ^[2]; Nishimura, Kurtis ^[5]; Steele, John ^[5]; Sweany, Melinda ^[5]; Weinfurther, Kyle ^[2]; Ziock, Klaus-Peter ^[2]

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1. Lawrence Berkeley National Laboratory
2. ORNL
3. University of California, Berkeley
4. Lawrence Berkeley National Laboratory (LBNL)
5. Sandia National Laboratories (SNL)
6. Argonne National Laboratory (ANL)
7. University of Hawaii at Manoa, Honolulu
8. North Carolina State University (NCSU), Raleigh

The multi-institution Single-Volume Scatter Camera (SVSC) collaboration led by Sandia National Laboratories (SNL) is developing a compact, high-efficiency double-scatter neutron imaging system. Kinematic emission imaging of fission-energy neutrons can be used to detect, locate, and spatially characterize special nuclear material. Neutron-scatter cameras, analogous to Compton imagers for gamma ray detection, have a wide field of view, good event-by-event angular resolution, and spectral sensitivity. Existing systems, however, suffer from large size and/or poor efficiency. We are developing high-efficiency scatter cameras with small form factors by detecting both neutron scatters in a compact active volume. This effort requires development and characterization of individual system components, namely fast organic scintillators, photodetectors, electronics, and reconstruction algorithms. In this presentation, we will focus on characterization measurements of several SVSC candidate scintillators. The SVSC collaboration is investigating two system concepts: the monolithic design in which isotropically emitted photons are detected on the sides of the volume, and the optically segmented design in which scintillation light is channeled along scintillator bars to segmented photodetector readout. For each of these approaches, we will describe the construction and performance of prototype systems. We will conclude by summarizing lessons learned, comparing and contrasting the two system designs, and outlining plans for the next iteration of prototype design and construction.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1651263
• Resource Relation: Conference: SPIE Optics + Photonics 2020 Digital Forum - Digital, California, United States of America - 8/24/2020 12:00:00 PM-8/28/2020 4:00:00 AM
• Country of Publication: United States
• Language: English