We have developed a class of vehicle portal monitors based on shielded 4 pi geometry neutron counting. we have derived and experimentally verified an analytical expression relating the detection sensitivity of the neutron tunnel vehicle portal monitor to four design parameters of the system. For a given number of neutron detectors, this design achieves one or more orders of magnitude improvement in nuclear materials detection sensitivity over previous vehicle portal monitors. (ERA citation 04:040458)


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    Title :

    Large Vehicle Portal Monitor for Perimeter Safeguards Applications


    Contributors:
    J. T. Caldwell (author) / H. F. Atwater (author) / W. Bernard (author) / J. M. Bieri (author) / E. R. Shunk (author)

    Publication date :

    1979


    Size :

    8 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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