Abstract
The personal dosemeter system of CERN based on the film badge must be able to evaluate the irradiation risks in the radiation environment around high energy accelerators. Over the past few years a critical re-appraisal of the detectors used in the light of the advent of new operational quantities in radiation protection has been made. Of special interest in this context is the comparison between the methods used at present for the evaluation of personal doses from hard photon irradiation and the quantities proposed on the one hand by ICRU and on the other hand by a group of experts in Switzerland. In the latter case the detector is exposed on a plexiglass block, a phantom which is preferred to a sphere for the calibration of dosemeters of a certain size. In addition, dose values expressed in this new quantity turn out to be numerically rather close to personal doses received in radiation fields of induced radioactivity and presently evaluated at CERN.
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