Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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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

  • Lee, Eunjoong (Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kim, Junhyeok (Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kim, Giyoon (Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kim, Jinhwan (Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology) ;
  • Park, Kyeongjin (Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology) ;
  • Cho, Gyuseong (Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology)
  • Received : 2018.07.27
  • Accepted : 2018.09.07
  • Published : 2019.02.25
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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.

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References

  1. Rare Isotope Science Project, IBS, Baseline Design Summary, August, 2012.
  2. Rare Isotope Science Project, IBS, RAON Accelerator and Experimental System Technical Design Report Volume 1-Project Overview, September 30, 2013.
  3. A. Fasso, A. Ferrari, P.R. Sala, Electronephoton transport in FLUKA: status, in: A. Kling, F. Barao, M. Nakagawa, L. Tavora, P. Vaz (Eds.), Proceedings of the Monte Carlo 2000 Conference, Lisbon, 23-26 October 2000, Springer-Verlag, Berlin, 2001, p. 159.
  4. A. Fasso, A. Ferrari, J. Ranft, P.R. Sala, FLUKA: status and prospective for hadronic applications, in: A. Kling, F. Barao, M. Nakagawa, L. Tavora, P. Vaz (Eds.), Proceedings of the Monte Carlo 2000 Conference, Lisbon, 23-26 October 2000, Springer-Verlag, Berlin, 2001, p. 955.
  5. Denise B. Pelowitz, MCNPX user's Manual Version 2.7.0, April 2011.
  6. N.V. Mokhov, S.I. Striganov, A. Van Ginneken, S.G. Mashnik, A.J. Sierk, J. Ranft, MARS code developments, in: T. Gabriel (Ed.), Proceedings of the Fourth Workshop on Simulating Accelerator Radiation Environments (SARE4), Knoxville (TN, USA), 14-16 September 1998, ORNL, 1998, p. 87.
  7. S. Agosteo, G. Fehrenbacher, M. Silari, Attenuation curves in concrete of neutrons from 1GeV/u C and U ions on a Fe target for the shielding design of RIB in-flight facilities, Nucl. Instrum. Meth. B 226 (2004) 231. https://doi.org/10.1016/j.nimb.2004.06.038
  8. H. Iwase, T. Kurosawa, T. Nakamu ra, N. Yoshizawa, J. Funabiki, Development of heavy ion transport Monte Carlo code, Nucl.Instr. and Meth.B 183 (2001) 374. https://doi.org/10.1016/S0168-583X(01)00706-6
  9. H. Iwase, K. Niita, T. Nakamura, Development of general-purpose particle and heavy ion transport code, J. Nucl. Sci. Technol. 39 (2002) 1142. https://doi.org/10.1080/18811248.2002.9715305
  10. H. Iwase, Development and Experimental Evaluation of a General-purpose Heavy-ion Transport Monte Carlo Code, Ph.D. Thesis, Tohoku University, March 2003.
  11. S. Agosteo, T. Nakamura, et al., Attenuation curves in concrete of neutrons from 100 to 400 MeV per nucleon He, C, Ne, Ar, Fe and Xe ions on various targets, Nucl. Instrum. Meth. B 217 (2004) 221. https://doi.org/10.1016/j.nimb.2003.10.010
  12. S. Agosteo, A. Fasso, et al., Double differential distributions and attenuation in concrete for neutrons produced by 100-400 MeV protons on iron and tissue target, Nucl. Instrum. Meth. B 114 (1996) 70. https://doi.org/10.1016/0168-583X(96)00046-8
  13. S. Agosteo, M. Magistris, et al., Shielding data for 100-250 MeV proton accelerators: attenuation of secondary radiation in thick iron and concrete/iron shields, Nucl. Instrum. Meth. B 266 (2008) 3406. https://doi.org/10.1016/j.nimb.2008.05.002
  14. B.J. Moyer, Evaluation of shielding required for the improved bevatron, lawrence radiation laboratory report UCRL-9769, june 1961; B.J. Moyer, method of calculating the shielding enclosure of the bevatron, in: Premier Colloque International sur la Protection Aupre's des Grands Acce'lerateurs, Presses Universitaires de France, Paris, 1962.
  15. R.C. McCall, T.M. Jenkins, R.A. Shore, Transport of accelerator produced neutrons in a concrete room, IEEE Trans.Nucl. Sci. NS 26 (1979) 1593. https://doi.org/10.1109/TNS.1979.4330446
  16. Nuclear Analysis and Design of Concrete Radiation Shielding for Nuclear Power Plants, ANSI/ANS-6.4, 1997.
  17. ICRP, ICRP Publication 74. Conversion Coefficients for Use in Radiological Protection against External Radiation, 1996.
  18. National Council of Radiation Protection, Radiation protection design guidelines for 0.1-100 MeV particle accelerators facilities, NCRP (Natl. Counc. Radiat. Prot. Meas.) Rep. 51 (1977).