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26 November 2002 Compact high energy x-ray inspection systems for screening air cargo
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A modular 2 MeV Shaped Energy™ system complemented with two 220 keV scanning pencil beam systems is described. With the scanning x-ray pencil beams providing backscatter imaging, this multi-source system has excellent detection capabilities, low radiation dose, and a small footprint for inspecting air cargo containers in a crowded airport environment. Its design is based on a prototype inspection system with a 3.5 MeV Shaped Energy source and segmented transmission detector complemented with two 450 keV scanning pencil beam systems. This higher energy system was designed for very high density cargo such as fully loaded ISO shipping containers. The unique modular design provides maximum detection with minimum radiation because both the Shaped Energy system and the lower energy systems can be independently optimized. Moreover, the combination of high-resolution transmission coupled with backscatter provides increased probability of detecting threats. A novel configuration of these same modules could be applied to a proposed CT air cargo inspection system with true density determining capabilities. Sample images from the existing 3.5 MeV prototype system will be presented along with recent test results.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
William Wade Sapp Jr., Lee Grodzins, Peter J. Rothschild, and Richard L. Schueller "Compact high energy x-ray inspection systems for screening air cargo", Proc. SPIE 4786, Penetrating Radiation Systems and Applications IV, (26 November 2002);

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