Abstract
The application of the Monte Carlo code FLUKA in the simulation of the stray radiation field around high energy accelerators has been tested against experimental results obtained at the 250 GeV/ c hadron beam at CERN. The present paper demonstrates the validity of the code in predicting neutron spectra in very complex geometrical conditions with large attenuation factors involved. The same experimental data served as a confirmation of the behaviour of a modified Andersson-Braun rem counter with a response function extended up to hundreds of MeV (LINUS). The present results confirm previous experimental evidence of the much increased response of this monitor with respect to conventional instruments when used in radiation fields with a substantial high energy neutron component.
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