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
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 a...
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| Published in | Nuclear engineering and technology Vol. 51; no. 1; pp. 275 - 283 |
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| Main Authors | , , , , , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier
01.02.2019
한국원자력학회 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1738-5733 2234-358X |
| DOI | 10.1016/j.net.2018.09.005 |
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| Abstract | 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. Keywords: Heavy ion accelerator, Shielding data, Neutron attenuation, Monte Carlo |
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| AbstractList | Rare isotope beam facilities require shielding data in early stage of their design. There is much lessshielding data on neutrons from the reactions between heavy ion beams and matter than the data onneutrons produced by protons. The purpose of the present work is to produce and thus increase theamount of shielding data on neutrons generated by high-energy heavy ion beams based on the RAON inflightfragment facility. Calculations were performed with the computational Monte Carlo codes PHITSand MCNPX. The secondary neutron source terms were evaluated at 550 MeV/u for Ca, Kr, and Sn and at400 MeV/u for U ions on a graphite target. Source terms and attenuation lengths were obtained by fittingthe ambient dose equivalent inside an ordinary concrete shield KCI Citation Count: 0 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. Keywords: Heavy ion accelerator, Shielding data, Neutron attenuation, Monte Carlo |
| Author | Lee, Eunjoong Park, Kyeongjin Kim, Junhyeok Kim, Giyoon Cho, Gyuseong Kim, Jinhwan |
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| Title | 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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