Dose measurements with CR-39 detectors at the CERF reference facility at CERN

Abstract

A passive neutron dosimeter based on CR-39 track detectors has been successfully tested at the CERF facility at CERN. Former calibration campaigns in monoenergetic and quasi-monoenergetic neutron beams have shown an almost energy independent response function of the detector in the energy range 0.5 MeV–100 MeV. This feature allows to obtain a “rem counter like” personal neutron detector, where a single calibration coefficient is valid for a wide energy range. In order to confirm his feature the detector has been tested in the CERF facility at CERN that generates a workplace neutron field similar to the one encountered at commercial flight altitude. The results show a very good agreement with the reference value permitting to conclude that the detectors have a good reliability also for this kind of radiation field.