Simplified TRS398 dosimetry protocol for dose determination in high-energy electrons beams

Abstract

A method is proposed to simplify the IAEA TRS398 dosimetry code of practice in respect to dose determination of high-energy electron beams. The proposed method eliminates the use of the intermediate beam quality Q(int) (and beam quality correction factor k(Q,Q(int))) applicable for cross calibration and subsequent use of the user's chamber for dose determination in water for high-energy electron beams. This method allows calculation of the dose to water calibration factor for the user's instrument at the reference beam quality N(D)(w,Q0) directly from a cross calibration in a high-energy electron beam of quality Q(cross) at the user's institute.