2.2 Photonuclear Reaction Data: 2. 2. 3 From User of Photoreaction Data (Application to shielding calculation of SR beamline)

摘要

Photoneutron production-yield has been calculated by using the data of track-length distribution caused by gas bremsstrahlung and photoreaction cross-section on a insertion device beamline of SPring-8. The track-length distribution and gas bremsstrahlung spectra were calculated by the Monte Carlo code EGS4. About 1.7 μSv/h has been obtained for the total photoneutron dose-equivalent rate at 1 m from the center of a thick target of Pb by assuming that the target is a point source and neutron emission is isotropic. The benchmark calculations of photoneutron production presented at the SATEF2 meeting have been also discussed.