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Virtual estimation of effective dose in neutron fields

Tijdschriftbijdrage - Tijdschriftartikel

The PODIUM project aims to provide real-time assessments of occupationally exposed workers by tracking their motion and combining this with a simulation of the radiation field. The present work describes the approach that would be taken in mixed neutron-gamma fields, and details the methods for generating and applying an effective dose rate map; the required fluence to effective dose conversion coefficients at intercardinal angles are also presented. A proof-of-concept of the approach is demonstrated using a simple simulated workplace field within a calibration laboratory, with corroborative comparisons made against survey instrument measurements generally confirming good agreement. Simulated tracking of an individual within the facility was performed, recording a 1.25╬╝Sv total effective dose and accounting for dose rates as low as 0.5 nSv h-1, which is much lower than anything that could be accurately measured by physical neutron dosemeters in such a field.
Tijdschrift: Journal of Radiological Protection
ISSN: 0952-4746
Issue: 2
Volume: 41
Pagina's: 360 - 383
Aantal pagina's: 24
Jaar van publicatie:2021
Trefwoorden:Omgevingswetenschappen en technologie, Energie en brandstoffen, Parageneeskundige wetenschappen , Radiologie en nucleaire geneeskunde