Author: Nakashima, H.
Paper Title Page
THPPR048 Construction of a BNCT Facility using an 8-MeV High Power Proton Linac in Tokai 4083
  • H. Kobayashi, T. Kurihara, H. Matsumoto, M. Yoshioka
    KEK, Ibaraki, Japan
  • T. Hashirano, F. Inoue, K. Sennyu, T. Sugano
    MHI, Hiroshima, Japan
  • F. Hiraga, Y. Kiyanagi
    Hokkaido University, Sapporo, Japan
  • H. Kumada
    Tsukuba University, Graduate School of Comprehensive Human Sciences, Ibaraki, Japan
  • A. Matsumura, H. Sakurai
    Tsukuba University, Ibaraki, Japan
  • T. Nakamura, H. Nakashima, T. Shibata
    JAEA, Ibaraki-ken, Japan
  • T. Ohba, Su. Tanaka
    Nippon Advanced Technology Co. Ltd., Ibaraki-prefecture, Japan
  An accelerator-based BNCT (Boron Neutron Capture Therapy) facility is now under construction and the entire system including the patient treatment system will be installed in the Ibaraki Medical Center for Advanced Neutron Therapy (tentative name). The linac specification is 8 MeV with 10 mA of average current (80 kW) with a duty factor of 20%. The linac is composed of a 3-MeV RFQ and a drift-tube linac and can accelerate a peak current of 50 mA up to 8-MeV. The neutron producing target is a 0.5 mm thick beryllium disk 150 mm in diameter which is formed on a heat sink plate. The material components used in the neutron moderator system, including the target, should be selected to have a reduced residual radio-activity. Special attention should be paid to mitigate the swelling of target materials due to hydrogen implantation as well. The development of an accelerator-based BNCT suited for practical application requires input from a wide spread of technical specialties. To obtain the needed breath and strength, we have organized our team with contributing members from diverse institutes and companies. The research and development activities of this integrated team will be presented.