Personal Dosimetry in Continuous Photon Radiation Fields With the Dosepix Detector

First measurements characterizing dosimetric properties of a dosimetry system designed for the purpose active personal photons with mean energies from 12.4 to 1250 keV according Physikalisch-Technische Bundesanstalt (PTB) requirements are presented. The consists three Dosepix detectors, which is hybrid, pixelated, photon-counting X-ray detector. energy and angular dependence normalized response coefficients variation dose equivalents H p (10) (0.07) determined on an International Organization Standardization (ISO) water slab phantom in continuous reference photon radiation fields ISO 4037-1 4037-3. presented narrow spectra N-15 N-300 qualities S-Cs S-Co angles incidence 0°, 30°, ±60°. highest deviation found at N-60, -60° 1.179 ± 0.007 (standard deviation) (10). range use expected extend keV. For equivalent (0.07), ±60° below lower limit N-15, N-20, N-25. It results 24.6 coefficient increases increasing stays 1% all measurements.