Paper Profile

MCNPX Modelling of G-M Pancake Response to Radioiodine Charcoal Filter Used at OPG

Documents: Full paper available in Conference Proceedings.
Date: Tuesday October 20
Time:13:25 - 13:50
Session:2B3: Monte Carlo II
Authors: Jovica Atanackovic (Ontario Power Generation)
W.John Chase (Ontario Power Generation)
Ian Edwards (Ontario Power Generation)

The Monte Carlo N-Particle eXtended (MCNPX) radiation transport code was used to model the response of a G-M pancake detector to the charcoal-filled radioiodine cartridge air filter used at Ontario Power Generation (OPG). The MCNPX models used either a continuous beta spectrum, or the discrete photon energies from 131I, exclusively. The electron and photon results were combined to determine the overall response of the G-M pancake probe. The model of the probe was benchmarked against 60Co and 36Cl certified button sources. The model of the charcoal filter was adjusted and benchmarked against a certified 131I cartridge source. The results were in a very good agreement with the experimental data.

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