Nuclear Physics and Atomic Energy

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Nuclear Physics and Atomic Energy

  ISSN: 1818-331X (Print), 2074-0565 (Online)
  Publisher: Institute for Nuclear Research of the National Academy of Sciences of Ukraine
  Languages: Ukrainian, English
  Periodicity: 4 times per year

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Nucl. Phys. At. Energy 2021, volume 22, issue 4, pages 415-421.
Section: Engineering and Methods of Experiment.
Received: 15.09.2021; Accepted: 27.04.2022; Published online: 4.06.2022.
PDF Full text (en)
https://doi.org/10.15407/jnpae2021.04.415

Design development of double-layer beam shaping assembly using extension nozzle to increase the quality of epithermal neutron beam as a boron neutron capture therapy neutron source

Bilalodin1,*, A. Haryadi1, Kartika Sari1, Y. Sardjono2, RasitoTursinah3

1 Department of Physics, Faculty of Mathematics and Natural Science, Jenderal Soedirman University, Purwokerto, Indonesia
2 Centre for Accelerator Science and Technology, National Nuclear Energy Agency, Yogyakarta, Indonesia
3 Research Center for Applied Nuclear Technology, Bandung, Indonesia


*Corresponding author. E-mail address: bilalodin@unsoed.ac.id

Abstract: Double layer beam shaping assembly (DLBSA) is a system that moderates fast neutrons into epithermal neutrons. The epithermal neutrons that leave the aperture in the DLBSA system are broadened in the space, thereby reducing the intensity and homogeneity of the epithermal neutron beams. Therefore, it is necessary to improve the design. The development of the DLBSA design was carried out using an extension nozzle. The nozzles are designed using materials made in three configurations, namely Ni+LiF load polyethylene, Pb+LiF load polyethylene, and Bi+LiF load polyethylene. The simulation results show that the addition of a nozzle at the tip of the DLBSA can channel the beam more directionally with high intensity. The addition of nozzles with Ni+LiF load PE material produces an epithermal neutron beam that meets the IAEA standards.

Keywords: extension nozzle, double layer beam shaping assembly, epithermal neutron, boron neutron capture therapy.

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