USING A SCANNER TO MEASURE ABSORBED DOSES WITH RADIOCHROMIC FILM DOSIMETERS

The article provides a sequence of steps for using RISempty set calorimeters for calibration and subsequent use of B3 radiochromic film dosimeters (GEX corporation) and a scanner for measuring absorbed doses. Calibration was carried out with the help of electron beam accelerator in the range of absorbed doses of 3 - 40 kGy (measurement range of RISempty set calorimeters). In the course of the work, the following was carried out: - calibration of B3 radiochromic dosimetry films using RISempty set calorimeters; - plotting a calibration curve for B3 radiochromic dosimetric films; - calculation of approximation functions; - development of a technique for using a flatbed scanner to measure absorbed doses; - estimation of the measurement uncertainties of absorbed doses. Accelerator operation parameters: scanning frequency of the accelerated electron beam - 5 Hz, pulse frequency - 120 Hz, electron energy - 5 MeV, electron beam current - 60 mu A. The measurement error of the absorbed dose is 5.8 %.