Attenuation Curves of Neutrons from 400 to 550 Mev/u for Ca, Kr, Sn, and U ions in Concrete on a Graphite Target for the Design of Shielding for the RAON In-flight Fragment Facility in Korea

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Rare isotope beam facilities require shielding data in early stage of their design. There is much less shielding data on neutrons from the reactions between heavy ion beams and matter than the data on neutrons produced by protons. The purpose of the present work is to produce and thus increase the amount of shielding data on neutrons generated by high-energy heavy ion beams based on the RAON in-flight fragment facility. Calculations were performed with the computational Monte Carlo codes PHITS and MCNPX. The secondary neutron source terms were evaluated at 550 MeV/u for Ca, Kr, and Sn and at 400 MeV/u for U ions on a graphite target. Source terms and attenuation lengths were obtained by fitting the ambient dose equivalent inside an ordinary concrete shield.
Publisher
KOREAN NUCLEAR SOC
Issue Date
2019-02
Language
English
Article Type
Article
Citation

NUCLEAR ENGINEERING AND TECHNOLOGY, v.51, no.1, pp.275 - 283

ISSN
1738-5733
DOI
10.1016/j.net.2018.09.005
URI
http://hdl.handle.net/10203/250235
Appears in Collection
NE-Journal Papers(저널논문)
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Attenuation Curves of Neutrons from 400 to 550 Mevu for Ca, Kr, Sn, and U ions in Concrete on a Graphite Target for the Design of Shielding for the RAON In-flight Fragment Facility in Korea.pdf(3.49 MB)Download

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