2015 Accelerators Article Beams ICNCT16 Physics

Development of beryllium-based neutron target system with three-layer structure for accelerator-based neutron source for boron neutron capture therapy

Applied Radiation and Isotopes, 2015

Authors:   Hiroaki Kumada,Toshikazu Kurihara,Masakazu Yoshioka,Hitoshi Kobayashi,Hiroshi Matsumoto,Tomei Sugano,Hideyuki Sakurai,Takeji Sakae,Akira Matsumura,
Journal: Applied Radiation and Isotopes
Abstract: The iBNCT project team with University of Tsukuba is developing an accelerator-based neutron source. Regarding neutron target material, our project has applied beryllium. To deal with large heat load and blistering of the target system, we developed a three-layer structure for the target system that includes a blistering mitigation material between the beryllium used as the neutron generator and the copper heat sink. The three materials were bonded through diffusion bonding using a hot isostatic pressing method. Based on several verifications, our project chose palladium as the intermediate layer. A prototype of the neutron target system was produced. We will verify that sufficient neutrons for BNCT treatment are generated by the device in the near future.