Current status of JASMIN: Japanese-American study of muon interactions and neutron detection

Nakashima, Hiroshi; Mokhov, N.*; Iwamoto, Yosuke   ; Matsuda, Norihiro  ; Kasugai, Yoshimi  ; Sakamoto, Yukio; Leveling, A.*; Boehnlein, D.*; Vaziri, K.*; Sanami, Toshiya*; Matsumura, Hiroshi*; Hagiwara, Masayuki*; Iwase, Hiroshi*; Ban, Shuichi*; Hirayama, Hideo*; Oishi, Koji*; Nakamura, Takashi*; Arakawa, Hiroyuki*; Shigyo, Nobuhiro*; Ishibashi, Kenji*; Yashima, Hiroshi*; Kinoshita, Norikazu*; Niita, Koji*

Several multi-purpose high-energy radiation transport codes are used in many research fields such as high-energy physics as well as accelerator facility shielding designs. The codes are benchmarked against experimental data on a regular basis. To promote this to a higher level and to a hardly explored field of neutron radiation induced by energetic muons, a JASMIN collaboration (Japanese-American Study of Muon Interaction and Neutron detection), has been created with several Laboratories and Universities of Japan and U.S.A. The collaboration has performed a series of experiments at the Pbar target station and NuMI facility at Fermi National Accelerator Laboratory, using irradiation of targets with 120 GeV protons for antiproton and neutrino production. This paper reviews recent activities and results.