Measured Radiation Environment at the Clinton P. Anderson Los Alamos Meson Physics Facility (LAMPF) Irradiation Facility
SourceA foil activation dosimetry experiment was conducted at the Clinton P. Anderson Los Alamos Meson Physics Facility (LAMPF) beam stop area to characterize the radiation environment and to identify techniques for spallation radiation measurements. The measured total spallation neutron flux outside the primary proton beam was 5.5 × 1017 neutrons/m2/s/mA ±7%. A previous Monte Carlo calculation gave a total spallation neutron flux in approximately the same location as the dosimetry package of 6.0 × 1017 neutrons/m2/s/mA ±3%. Comparison between the measured and calculated neutron fluxes shows good agreement. To extend the characterization, additional spallation cross sections for energies up to 800 MeV and the use of foils sensitive to the epithermal energy range are needed.