Development of beryllium-based neutron target system with three-layer structure for accelerator-based neutron source for boron neutron capture therapy. (December 2015)

• Record Type: Journal Article
• Authors: Kumada, Hiroaki; Kurihara, Toshikazu; Yoshioka, Masakazu; Kobayashi, Hitoshi; Matsumoto, Hiroshi; Sugano, Tomei; Sakurai, Hideyuki; Sakae, Takeji; Matsumura, Akira
• Is Part Of: Applied radiation and isotopes. Volume 106(2015:Dec.)
• Page Start: 78
• Page End: 83
• Publication Date: 2015-12
• Subjects: Boron neutron capture therapy -- Accelerator-based neutron source -- Beryllium -- Target material -- Blistering -- Hydrogen storing material -- Hot isostatic pressing; Radiology -- Periodicals; Radiation -- Industrial applications -- Periodicals; Nuclear chemistry -- Periodicals; Internet resource; Periodical; 660.298
• DOI: 10.1016/j.apradiso.2015.07.033
• Languages: English
• ISSNs: 0969-8043

Abstract

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. Highlights: Beryllium is applied to neutron target material for accelerator based neutron source. Three-layer structure for the beryllium-based target system was developed. Regarding intermediate material, hydrogen-storing material is used to suppress blistering. The three materials are bonded through diffusion bonding using a hot isostatic pressing method. Palladium is applied as the intermediate material of the target system. Prototype of the three-layer structure target system was installed in accelerator based neutron source for BNCT device.