Magnet Design of 4 MeV Cyclotron for the BNCT
J. Korean Phy. Soc. 2011; 59: 2029~2031
Published online August 12, 2011 © 2011 The Korean Physical Society.

Research concern about neutron radiography has been increasing in Korea since 2001. Neutron radiography can help for the weakness of X-ray image. Neutron radiography can be used in not only non-destructive inspection but also basic science research. For those reasons more compact mono-energetic neutron source is needed. The 4 MeV deuteron cyclotron can be a candidate for the production of mono-energetic neutrons. In this paper optimal 4 MeV deuteron cyclotron magnet design is shown for neutron generation by d(d, n)He3 reaction. All field simulations have been performed using POSSION and OPERA-3D (TOSCA) for magnet system design. The required beam current is 1 mA, 4 MeV. The first purpose of this cyclotron is to generate fast neutrons with deuterium gas target. The second purpose of this cyclotron is material science and nuclear technology research in biology, physics and chemistry. Also it will be used in industries including neutron radiography.
Keywords: cyclotron, deuteron, neutron, fast neutron radiography

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