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<p>Electron beam calibration dosimetry traditionally requires the sequential use of depth-dose packs to tune the voltage for accuracy. Once the dose pack is irradiated and the dose established, the potentiometer is adjusted based on the results. While this is considered an acceptable industry practice, the process lacks an accurate performance curve based on computational dosimetry to serve as a reference. This is particularly useful for quantifying absorbed dose in surface layers, where sterilization requires high confidence. The PENELOPE Monte Carlo code for radiation transport is used to calculate a channel ratio between the alanine dosimeter and stepped polyethylene absorber layers. 50&#xa0;keV increments ranging from 100 to 300&#xa0;keV were examined for use as a reference curve during electron beam calibration. Sources of uncertainty are considered.</p>

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Calculations for electron beam calibration using a depth-dose channel ratio

  • 期刊论文

  • 发表日期：

    2026年2月5日

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  • Andrew Palm,
  • Mark Driscoll

摘要

Electron beam calibration dosimetry traditionally requires the sequential use of depth-dose packs to tune the voltage for accuracy. Once the dose pack is irradiated and the dose established, the potentiometer is adjusted based on the results. While this is considered an acceptable industry practice, the process lacks an accurate performance curve based on computational dosimetry to serve as a reference. This is particularly useful for quantifying absorbed dose in surface layers, where sterilization requires high confidence. The PENELOPE Monte Carlo code for radiation transport is used to calculate a channel ratio between the alanine dosimeter and stepped polyethylene absorber layers. 50 keV increments ranging from 100 to 300 keV were examined for use as a reference curve during electron beam calibration. Sources of uncertainty are considered.