Measurement of neutron energy spectra from Pb and Bi targets using FFAG proton accelerator

Nakano, Keita   ; Iwamoto, Hiroki   ; Meigo, Shinichiro   ; Nishio, Katsuhisa   ; Ishi, Yoshihiro*; Hirose, Kentaro  ; Iwamoto, Yosuke   ; Kuriyama, Yasutoshi*; Maekawa, Fujio  ; Makii, Hiroyuki   ; Okabe, Kota  ; Orlandi, R.  ; Oizumi, Akito   ; Satoh, Daiki   ; Suzaki, Fumi  ; Tsukada, Kazuaki  ; Uesugi, Tomonori*; Yashima, Hiroshi*; Mori, Yoshiharu*

Toward the realization of Accelerator-Driven System (ADS), we have been measuring the nuclear data for ADS using Kyoto University FFAG accelerator. In this presentation, we report the outline and the results of the energy spectrum measurement of neutrons produced by 107 MeV proton-induced reactions on lead and bismuth, which are the most important nuclides in ADS.