Detector System for Radiation Imaging Using Inverse Collimation
32nd Annual CNS Conference - 2011 June 05-08

Presented at:
32nd Annual CNS Conference
2011 June 05-08
Niagara Falls, Canada
Session Title:
Reactor and Radiation Physics 1

Arjun Das (AECL - Chalk River)
Bhaskar Sur (Atomic Energy of Canada Limited)
Shuwei Yue (AECL - Chalk River)
Guy Jonkmans (Atomic Energy of Canada Limited)


This paper describes the concept of using inverse collimation for directional radiation detection, enabling small, lightweight and cost-effective radiation imaging devices. An inverse collimator has been successfully implemented in a patented detector system that maps the direction and intensities of incident gamma radiation to generate a 4π steradian image of radiation sources. An inverse collimator is presented as a novel solution to heavy and unwieldy collimators, by shielding only from the direction of interest. Applications include visual identification of radiological hazards in nuclear production, waste management, decommissioning, and environments where accessibility is low and risk of radiological contamination is high.

Individual Conference-Paper Copies (Electronic Where Available):

  • For CNS members, the first 5 copies per calendar year are free, and additional copies are $10 each.
  • For non-members, the price is $25 for the first Conference-paper copy in a request, and $10 each for additional copies of papers in the same conference and in the same request.
  • Contact the CNS office to order reprints.