Neutron Flux Measurements at the CFDF using Different Detectors

The present work deals with neutron flux measurements performed at the Cairo Fourier Diffractometer Facility (CFDF); which has been installed at the ET-RR-1 Reactor. The CFDF applies two neutron guides for transmitting the neutron beam from the reactor to the sample position. The measurements were carried out at the exit of the straight neutron guide of the CFDF using 3 He and BF3 detectors.The neutron flux, at different points of the neutron guide, was also measured using both the calibrated 3 He and BF3 detectors; as well as gold foil activation method. It has been found from the present measurements that the 3 He detectors are superior, for the CFDF neutron beam monitoring, to the BF3 ones.