Thick target yield measurements in TIARA, KEK and HIMAC

Measurements of double differential thick target neutron yields performed in Japan with different ions, energies and targets are reviewed. At the synchrotron at KEK, 0.5 and 1.5 GeV protons were injected into a 20 cm thick lead target, and emitted neutrons were measured by a multi-detector system at 5 angles. The lower energy proton (68 MeV), alpha particle (100 MeV), C(220 MeV), Ar(460 MeV) ions were used at TIARA facility of JAERI, Takasaki, where neutron and gamma-ray yields were measured for C, Fe, Zr and Au targets at 7 angles. At HIMAC the measurements of double differential neutron yields were made by higher energy ions: alpha particles, C and Ne ions of 100, 180 and 400 MeV/u injected to C, Al, Cu, Pb thick targets. The data were obtained at 6 angles. (author)