Two-dimensional differential calibration method for a neutron dosemeter using a thermal neutron beam
Tetsuro Matsumoto1, Hideki Harano, Akihiko Masuda
1National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan. t-matsumoto@aist.go.jp
Radiation Protection Dosimetry
|March 20, 2013
Summary
A new method calibrates neutron detectors using a pulsed beam and time-of-flight (TOF) for energy response. This technique successfully measured detector responses, paving the way for improved spatial distribution analysis.
Area of Science:
- Nuclear instrumentation
- Neutron detection physics
Background:
- Accurate neutron detector calibration is crucial for radiation measurement.
- Existing methods may lack detailed spatial response information.
Purpose of the Study:
- To develop and demonstrate a novel thermal neutron calibration method.
- To determine the energy response function of neutron detectors.
- To propose an improved method for spatial response distribution.
Main Methods:
- Utilized a pulsed parallel beam and time-of-flight (TOF) technique.
- Experimentally demonstrated the method using a (3)He proportional counter and an electric personal dosemeter.
- Proposed an improved method incorporating a pulsed narrow beam and beam scanning.
Main Results:
- Successfully obtained the energy response function for tested detectors.
- Demonstrated the feasibility of the new calibration approach.
- Identified the need for detector structure information for spatial response.
Conclusions:
- The developed TOF-based calibration method is effective for determining neutron detector energy response.
- Further refinement using beam scanning can yield spatial response distributions.
- This work advances neutron metrology and detector characterization.
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