Electron Beam Calibration Phantoms

A fixture which is used for the arrangement of discs containing alanine transfer dosimeters, and pouches of B3 film dosimeters, in proper geometry, to ensure that the dosimeters receive the same absorbed dose when irradiated. In addition, this phantom is designed to match the geometry of the 5 MeV and 10 MeV Risø Calorimeters (GEX Part# B600X) to ensure that the phantom and the calorimeter receive the same dose.

Used when performing in-plant batch calibration of dosimeters in electron beam irradiation facilities. This phantom has been designed and built to provide a consistent method of presenting dosimeters to the beam as detailed in the two references listed near the end of this document. The P1020 is designed for 10 MeV and the P1030 is designed for 5 MeV nominal surface energy of the electrons from the ebeam. Use the model number for the closest approximate ebeam energy (MeV) for the beam being used.