Dosimetry Commissioning of Tunisian Electron Beam Accelerator

The Tunisian Beta irradiation facility (LINAC, CIRCE III) has been put into operation at the end of 2009. Such facility is designed essentially for sterilization of medical devices and conservation of foodstuff. The delivery and validation of a specified dose are key concerns of operators of electron beam irradiation facilities. In order to adjust the treatment conditions and to control the optimal operation of the accelerator, it is necessary to evaluate the absorbed dose and its distribution within material in the radiation field. Consequently, aspects from installation qualification to operation qualification are described together with the associated process variables. Technical parameters that directly influence the absorbed dose distribution in the product were examined by dosimetric measurements and compared to the data specified by the facility manufacturer. Two dosimeter types were used for measurements: radiochromic B3 and cellulose triacetate films.