Analyses of benchmark problems for the shielding design of high intensity proton accelerator facilities

Matsuda, Norihiro  ; Iwamoto, Yosuke   ; Harada, Masahide   ; Teshigawara, Makoto   ; Meigo, Shinichiro   ; Maekawa, Fujio  ; Oguri, Tomomi*; Nakano, Hideo*; Nakao, Noriaki*; Nakane, Yoshihiro  ; Nakashima, Hiroshi

Radiation Shielding design/safety analysis required for licensing of the high intensity proton accelerator facility J-PARC (Japan Proton Accelerator Research Complex) is in progress, using various high-energy particle transport codes. Shielding benchmark problems, mainly based on experiments, on thick target neutron yield, beam dump geometry, deep penetration and radiation streaming were prepared and analyzed by the shielding design codes, in order to estimate the code's accuracy. The results of analyses show that the calculation results agree with the experiments within a factor of two on the whole.