Prog Med Phys.  2017 Jun;28(2):49-53. 10.14316/pmp.2017.28.2.49.

Electron Energy Distribution for a Research Electron LINAC

• Lim H
• Lee M
• Yi J
• Kang SK
• Kim MY
• Jeong DH

• KMID: 2388208
• DOI: http://doi.org/10.14316/pmp.2017.28.2.49

Abstract

The energy distribution was calculated for an electron beam from an electron linear accelerator developed for medical applications using computational methods. The depth dose data for monoenergetic electrons from 0.1 MeV to 8.0 MeV were calculated by the DOSXYZ/nrc code. The calculated data were used to generate the energy distribution from the measured depth dose data by numerical iterations. The measured data in a previous work and an in-house computer program were used for the generation of energy distribution. As results, the mean energy and most probable energy of the energy distribution were 5.7 MeV and 6.2 MeV, respectively. These two values agreed with those determined by the IAEA dosimetry protocol using the measured depth dose.

Keyword

Energy distribution; Electron LINAC; Mean Energy

MeSH Terms

Particle Accelerators

Figure

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  Fig. 1. Geometry of electron beam dosimetry for measurement of depth dose in solid phantom.

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  Fig. 2. Calculated energy distribution (normalized) for research LINAC in this study.

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  Fig. 3. Measured and calculated depth dose data. In calculations, energy distribution of Fig. 2 and film dosimetry data in previous work2) were used.

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