A Study of Stray Neutron Field Measurements for the Neutron Scattering Instruments at CSNS
Source abstract
Abstract
Stray neutrons might cause several negative impacts. However, it is usually difficult to conduct precise stray neutron simulations using the Monte Carlo method. Therefore, in this study, a measurement technique was proposed to study the stray neutrons experimentally inside the neutron scattering instruments at China Spallation Neutron Source (CSNS). The adopted measurement instruments comprise an extended-range Bonner sphere spectrometer and a commercial neutron ambient-dose-equivalent dosimeter, which enables us to directly measure the neutron spectra and ambient-dose equivalent H*(10) values. Verification experiments were performed inside the BL06 beam line experimental area at CSNS at two exposed locations with different sample conditions. Comparison of the experimentally measured neutron spectra, integral neutron fluence, and H*(10) value with the simulations demonstrated the feasibility of using the proposed method for studying stray neutrons for the neutron instruments.
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Research context
OpenAlex topics: Radiation Therapy and Dosimetry · Nuclear Physics and Applications · Atomic and Subatomic Physics Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Nuclear Data, China Institute of Atomic Energy, Beijing 102413, China
Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing 100049, China
Spallation Neutron Source Science Center, Dongguan 523803, China
Guangdong-Hong Kong-Macao Joint Laboratory for Neutron Scattering Science and Technology, Dongguan 523803, China
Funding
Regional Joint Fund of Guangdong · Guangdong-Hong Kong-Macao Joint Laboratory for Neutron Scattering Science and Technology · Program for Guangdong Introducing Innovative and Entrepreneurial Teams · Guangdong Provincial Science and Technology Plan
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