Comparison of calculated and measured high energy neutron reaction rates at the manual Jr. Lujan Center Spallation Source

In December 2001, we measured the in beam high-energy neutron intensities on several of the beamlines at the spallation neutron source at the Lujan Center, Los Alamos, USA. This effort was then followed by a comparison of these measurements with Monte Carlo transport simulations. In this paper we present the results of these simulations and their comparison with the measurements.