Detection and positioning of radioactive sources using a four-detector response algorithm

Detection and positioning of radioactive sources using a four-detector response algorithm

A method for detecting and identifying radioactive gamma-ray sources along with determining a directional bearing is described. This method is based upon comparing the relative intensities of four detectors placed side by side in a four-quadrant formation, allowing for the system to take advantage o...

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Veröffentlicht in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2014-12, Vol.767, p.445-452
Hauptverfasser: Willis, Michael J., Skutnik, Steven E., Hall, Howard L.
Format: Artikel
Sprache:eng
Schlagworte:
Accelerators
Algorithms
Arrays
Bearing
Counting
Detectors
Direction
Fuzzy logic
Gamma radiation
Nuclear security
Planes
Position
Radiation
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Beschreibung
Zusammenfassung:A method for detecting and identifying radioactive gamma-ray sources along with determining a directional bearing is described. This method is based upon comparing the relative intensities of four detectors placed side by side in a four-quadrant formation, allowing for the system to take advantage of shadowing in the occluded array of detectors. Based on this shielding principle, a fuzzy logic algorithm is used to analyze the gross count response of each individual detector with respect to the other three. The result of this algorithm is a numerical result that can be converted to a directional bearing in a 360° x–y plane.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2014.08.033