Research activities on JASMIN; Japanese and American Study of Muon Interaction and Neutron detection

Nakashima, Hiroshi; Mokhov, N.*; 28 of others*

In JASMIN, a series of experiments has been performed with the intense 120-GeV proton beams at Fermilab. The secondary particles created in such interactions were measured around the targets as well as in their penetration through steel, concrete and rock. Nuclear data such as activation and mass distributions of residual nuclei have been measured by activation methods. Double differential neutron production yield has also been measured by a time of flight techniques. Comparison of results calculated by PHITS and MARS reveals in general a good agreement. Further analyses are in progress.