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ASSESSMENT OF NEUTRON HP(10) USING WORKPLACE CORRECTION FACTORS OBTAINED THROUGH MONTE CARLO SIMULATION FOR ALNOR
Max S Ferreira1, Everton R Silva1, Claudia L P Mauricio1
1Instituto de Radioproteção e Dosimetria, Comissão Nacional de Energia Nuclear, Rio de Janeiro, RJ, Brazil.
Radiation Protection Dosimetry
|July 22, 2022
Summary
Albedo dosemeters for neutron monitoring show variable responses. This study introduces Workplace Correction Factor (WCF) curves using Monte Carlo simulations to improve neutron dose accuracy across different workplace spectra.
Area of Science:
- Radiation Detection and Measurement
- Nuclear Physics
- Health Physics
Background:
- Albedo dosemeters are crucial for neutron individual monitoring globally.
- Their response varies significantly with neutron workplace spectra, impacting dose accuracy.
- Two-component albedo dosemeters use incident (i) and albedo (a) neutron measurements for corrections.
Purpose of the Study:
- To develop and validate Workplace Correction Factor (WCF) curves for the Alnor albedo dosemeter.
- To reduce inaccuracies in neutron dose assessment across diverse neutron fields.
- To utilize Monte Carlo simulations for precise dosemeter response analysis.
Main Methods:
- Monte Carlo MCNPX simulations were employed to model the Alnor albedo dosemeter response.
- Workplace Correction Factor (WCF) as a function of the incident-to-albedo neutron ratio (i/a) was plotted.
- Simulations were validated using experimental measurements for diverse neutron fields.
Main Results:
- WCF × i/a curves were generated for various neutron fields, demonstrating their utility.
- The simulation accurately predicted dosemeter response, validated by experimental data.
- The proposed curves offer a method to reduce dose assessment inaccuracies.
Conclusions:
- The developed WCF curves enhance the accuracy of neutron dose assessment in different workplace environments.
- Monte Carlo simulations provide a reliable method for characterizing albedo dosemeter responses.
- Care must be taken regarding the uncertainties associated with i/a ratio values for accurate WCF determination.
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