Publications

Source detection at 100 meter standoff with a time-encoded imaging system

Brennan, James S.; Brubaker, Erik B.; Gerling, Mark D.; Marleau, Peter M.; Monterial, Mateusz M.; Nowack, A.; Schuster, P.; Sturm, B.; Sweany, Melinda

We present the design, characterization, and testing of a laboratory prototype radiological search and localization system. The system, based on time-encoded imaging, uses the attenuation signature of neutrons in time, induced by the geometrical layout and motion of the system. We have demonstrated the ability to detect a ∼1mCi252Cf radiological source at 100m standoff with 90% detection efficiency and 10% false positives against background in 12min. This same detection efficiency is met at 15s for a 40m standoff, and 1.2s for a 20m standoff.