Calculation of Signals in Coded-Aperture Imaging of Many-Pin Bundles of LMFBR Fuel

Technical Report · Sun Oct 01 00:00:00 EDT 1978

DOI:https://doi.org/10.2172/6517268· OSTI ID:6517268

McArthur, D. A. ^[1]; Halbleib, Sr., J. A. ^[1]; Morel, J. E. ^[1]

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1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Detailed Monte Carlo gamma-ray transport calculations have been performed to study the coded-aperture imaging problem for a 37-pin bundle. Realistic geometries have been used for the test fuel bundle, its containment, the coded aperture and the gamma-ray detector. A high-Z gamma-ray filter placed near the coded aperture was found to enhance the signal change caused by voiding of test fuel, and a non-linear relationship was found between the amount of fuel voided and the resulting signal change. The signal changes appear to be large enough that gamma-ray imaging would be useful for a 37-pin bundle.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE; USNRC
• DOE Contract Number: EY-76-C-04-0789
• OSTI ID: 6517268
• Report Number(s): NUREG/CR--0443; SAND--78-0503
• Country of Publication: United States
• Language: English

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