RECENT DEVELOPMENTS IN THE SPECIFICATION AND ACHIEVEMENT OF REALISTICNEUTRON CALIBRATION FIELDS

In order to calibrate more accurately the neutron dosemeters involved in radiation protection, the concept of 'Realistic Neutron Calibration Fields' is considered as an appropriate alternative solution, making necessary new irradiation facilities which generate well-characterised neutron fields with energy and angular distributions replicating more closely practical workplace conditions. Several experienced laborator ies have collaborated on a European project and proposed various appro aches which are reviewed in this paper. A short description of the fac ilities currently in operation is given as well as a few characteristi cs of the available radiation fields. This description of the state of art is followed by a discussion of the problems to be solved for usin g such facilities for calibration purposes according to well-specified calibration procedures.