The Shielding of a 14 MeV Neutron Generator.
MATERIALS RESEARCH LABS ASCOT VALE (AUSTRALIA)
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The concrete masonry shield for a 14 MeV neutron generator was designed using data supplied by the manufacturer. Subsequent radiation surveys outside the shield showed doses higher than expected. Calculations indicated the sensitivity of dose transmission factors to concrete composition. The observed dose transmission factor agreed with that of Broerse but not with that of Hacke and Prudhomme. Measurements and calculations delineated the contribution that neutrons, scattered from the upper wall that supports the laboratory roof, made to the dose in ajoining areas. In redesigning the shield a compromise was made between additional cost and restrictions on the generators duty cycle, which is automatically controlled to ensure personnel safety. Author
- Nuclear Radiation Shielding, Protection and Safety