Safety Management Group

The RIKEN Nishina Center for Accelerator-Based Science possesses one of the largest accelerator facilities in the world, which consists of two heavy-ion linear accelerators and five cyclotrons, and a proton linac. This is the only site in Japan where uranium ions are accelerated. The center also has electron accelerators of microtron and synchrotron storage ring. Our function is to keep the radiation level in and around the facility below the allowable limit and to keep the exposure of workers as low as reasonably achievable. We are also involved in the safety management of the Radioisotope Center, where many types of experiments are performed with sealed and unsealed radioisotopes.

Research Subjects

• Safety management at radiation facilities of Nishina Center for Accelerator-Based Science
• Safety management at Radioisotope Center
• Radiation shielding design and development of accelerator safety systems

Publications

1. Koichi Takamiya, Yoshiyuki Ota, Masaaki Akamine, Seiichi Shibata, Tokushi Shibata, Yutaka Ito, Mineo Imamura, Yoshitomo Uwamino, Norio Nogawa, Mamoru Baba, Shin Iwasaki and Shigeo Matsuyama:
   "Excitation function for 63Cu(n,p)63Ni reaction in neutron energy range up to 15 MeV."
   Applied Radiation and Isotopes, 66(2008) 1321-1324.
2. Koichi Takamiya, Tetsuji Inamaka, Yoshiyuki, Ota, Masaaki Akamine, Seiichi Shibata, Tokushi Shibata, Yutaka Ito, Mineo Imamuta, Yoshitomo Uwamino, Norio Nogawa, Mamoru Baba, Shin Iwasaki and Shigeo Matsuyama:
   "Nickel-63 production in copper samples exposed to the Hiroshima atomic bomb: estimation based on an excitation function obtained by neutron irradiation experiments."
   Radiation and Environmental Biophysics, 47(2008) 343-348.
3. Masayuki Hagiwara, Toshiya Sanami, Kazuyoshi Masumoto, Yosuke Iwamoto, Norihiro Matsuda, Yukio Sakamoto, Hoshihiro Nakene, Hiroshi Nakashima and Yoshitomo Uwamino:
   "Spectrum measurement of neutrons and gamma-rays from thick H218O target bombarded with 18 MeV protons."
   Journal of the Korean Physical Society, 59(2011)2035-2038.
4. Yoshitomo Uwamino, Hisao Sakamoto, Rieko Higurashi, Hiroki Mukai, Hiroyuki Fukuda and Atsuko Akashio:
   "A state of the RIKEN radioisotope beam factory."
   Indian Journal of Pure and Applied Physics, 50(2012)442-445.
5. Hiromitsu Haba, Jumpei Kanaya, Hiroki Mukai, Tadashi Kambara, and Masayuki Kase:
   "One-year monitoring of airborne radionuclides in Wako, Japan, after the Fukushima Dai-ichi nuclear power plant accident in 2011."
   Geochemical Journal, 46(2012)271-278
6. Nisy Ipe, Georg Fehrenbacher, Irena Gudowska, Harald Paganetti, Jacobus Schippers, Stefan Roesler, Yoshitomo Uwamino:
   "Shielding design and radiation safety of charged particle therapy facilities."
   Particle Therapy Co-Operative Group (PTCOG), Villigen Switzerland (2010)445p.