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The calibration of Bonner sphere spectrometer
Tomohiro Ogata1, Seiichi Kudo, Yuya Watanabe
1Mitsubishi Heavy Industries, Ltd, 1-1-1 Wadasaki-cyo, Hyogo-ku, Kobe 652-8585, Japan. tomohiro_ogata@mhi.co.jp
Radiation Protection Dosimetry
|May 27, 2011
Summary
The Bonner sphere spectrometer (BSS) was calibrated at the National Institute of Advanced Industrial Science and Technology (AIST). Calibration results confirmed good agreement with calculations, ensuring accurate neutron dose and activity estimations.
Area of Science:
- Nuclear instrumentation and radiation detection
- Applied physics and metrology
Background:
- Bonner sphere spectrometers (BSS) are crucial for radiation protection measurements due to their broad energy range and operational simplicity.
- Mitsubishi Heavy Industries (MHI) utilizes BSS for neutron spectrum analysis to determine neutron dose and induced radioactivity.
Purpose of the Study:
- To calibrate the MHI Bonner sphere spectrometer (BSS).
- To validate the accuracy of the BSS for precise neutron dose and induced activity estimations.
Main Methods:
- Calibration of the MHI BSS was performed at the National Institute of Advanced Industrial Science and Technology (AIST).
- Experimental calibration data was compared with theoretical calculation results.
Main Results:
- The calibration results obtained at AIST showed strong agreement with the calculated values.
- This validates the performance of the MHI BSS.
Conclusions:
- The calibration confirms the MHI BSS is accurately characterized for radiation protection applications.
- Precise neutron spectrum, dose, and activity measurements can be reliably achieved using the calibrated BSS.
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