Image reconstruction of shielded mixed-oxide fuel using a dual-particle imaging system

Journal Article · Sat Nov 01 00:00:00 EDT 2014 · Nuclear Science Symposium and Medical Imaging Conference record

DOI:https://doi.org/10.1109/NSSMIC.2014.7431091· OSTI ID:1582001

Polack, J. Kyle ^[1]; Poitrasson-Riviere, Alexis ^[1]; Hamel, Michael C. ^[1]; Ito, Kai ^[2]; Clarke, Shaun D. ^[1]; Flaska, Marek ^[1]; Pozzi, Sara A. ^[1]; Tomanin, Alice ^[3]; Peerani, Paolo ^[3]

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1. Univ. of Michigan, Ann Arbor, MI (United States)
2. Nagoya Univ., Chikusa-ku (Japan)
3. Joint Research Center, Varese (Italy)

The dual-particle imaging system being developed at the University of Michigan was used at the Joint Research Centre in Ispra, Italy for measurements on samples of special nuclear material. A 1,150-g mixed-oxide (MOX) fuel sample was measured with various shielding configurations to determine how the presence of lead and/or polyethylene shielding degrades the system's ability to localize a source by simultaneous neutron and photon imaging. Three two-hour measurements were taken with the source shielded by an: a) 8-mm lead sheath and 5.1-cm lead bricks, b) 8-mm lead sheath and 6.5-cm polyethylene bricks, and c) 8-mm lead sheath, 5.1-cm lead bricks, and 6.5-cm polyethylene bricks. The 8-mm lead sheath was used in all cases to reduce the measured photon count rate. A “bare” measurement was also made by using only the 8-mm lead sheath, but the unexpected presence of additional sources has rendered the measurement unsuitable for comparison. Here, the resulting images show that the dual-particle imaging system is able to accurately localize the MOX canister in the presence of intervening material.

• Research Organization: Univ. of Michigan, Ann Arbor, MI (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Office of Nonproliferation and Verification Research and Development (NA-22)
• Grant/Contract Number: NA0002481; NA0002534; NE0000324; AC04-94AL85000
• OSTI ID: 1582001
• Journal Information: Nuclear Science Symposium and Medical Imaging Conference record, Vol. 2014; Conference: 2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), Seattle, WA (United States), 8-15 Nov 2014; ISSN 1091-0026
• Publisher: IEEE
• Country of Publication: United States
• Language: English

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