Shielding Experiments Under JASMIN Collaboration at Fermilab(IV) -   Measurement and Analyses of High-Energy Neutron Spectra in the Anti-Proton   Target Station
  Neutron spectra in high-energy region between 1 and 100-MeV in the shield configuration of the anti-proton target station and a 120-GeV proton beam at Fermi National Accelerator Laboratory (Fermilab) were determined using the reaction rate data obtained with the multi-foil activation method. Two kinds of methods were employed for the determination of neutron spectra: one is the fitting method which is newly developed in this work, another is the unfolding method with SAND-II code. The calculations were performed using the PHITS. From the comparison between the calculated and experimental neutron spectra, it concluded that the PHITS can be used for shielding design of high-energy proton accelerators. 
JASMIN Collaboration (N. Matsuda, Y. Kasugai, Y. Sakamoto, H.   Nakashima (JAEA, Ibaraki), H. Matsumura, H. Iwase, N. Hinosh...
physics.acc-ph nucl-ex