Time‐of‐flight techniques have been used with a silicon surface barrier detector and a polyethylene radiator to determine the neutron flux from the Oak Ridge electron linear accelerator in the energy region between 200 keV and 7 MeV. The 200 mm2 surface barrier detector at 40 m and constant fraction timing electronics are used to measure time of flight, from which the neutron energies are inferred. A Monte Carlo program has been written to determine the efficiency, timing, and energy characteristics of the monitor system.