https://doi.org/10.1140/epjp/s13360-021-01681-9
Regular Article
Cylindrical neutron spectrometer system: design and characterization
1
Institute for Nuclear Science and Technology, VINATOM, 179 Hoang Quoc Viet, 100000, Hanoi, Viet Nam
2
Military Institute for Chemistry and Environment, An Khanh, Hoai Duc, 100000, Hanoi, Viet Nam
3
Faculty of Physics, VNU University of Science, 334 Nguyen Trai, 100000, Hanoi, Viet Nam
4
Research and Development Center for Radiation Technology, VINATOM, 700000, Thu Duc, Ho Chi Minh city, Viet Nam
5
Hanoi University of Mining and Geology, 100000, Hanoi, Viet Nam
6
Department of Engineering, Colorado State University-Pueblo, Pueblo, CO, USA
7
Institute of Fundamental and Applied Sciences, Duy Tan University, 700000, Ho Chi Minh city, Viet Nam
8
Faculty of Natural Sciences, Duy Tan University, 550000, Da Nang, Viet Nam
a
LNThiem@vinatom.gov.vn
k
tranhoainam4@dtu.edu.vn
Received:
14
January
2021
Accepted:
17
June
2021
Published online:
25
June
2021
A multilayer cylindrical neutron spectrometer (CNS) system has been designed based on the similar principle of a commercial Bonner sphere spectrometer (BSS) system. The characteristics, e.g., spectral neutron fluence response functions and angular neutron fluence response functions, of the CNS system have been evaluated using MCNP6 simulations. The dosimetric quantities including neutron fluence rate (
), neutron ambient dose equivalent rate (
), neutron ambient dose equivalent-averaged energy (
), neutron fluence-averaged energy (
) and neutron fluence-to-ambient dose equivalent conversion coefficient (
) of three neutron standard fields with 
Am–Be source were evaluated using the CNS system. The standard uncertainties of the dosimetric quantities were also estimated and discussed. Comparison of dosimetric quantities measured by the CNS and the BSS systems was made in order to verify the operation of the CNS system. The discrepancies in , , , and measured by the CNS and the BSS systems are 7%, 5%, 8%, 11% and 3%, respectively. This agreement indicates that the CNS system is reliable for neutron dosimetry and radiation safety assessment. The CNS system is advantageous due to its compactness, portability and simplicity in fabrication.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021
