Prog Med Phys.  2015 Mar;26(1):1-5. 10.14316/pmp.2015.26.1.1.

Measurement of Electron Beam Output for the Prototype Compact Linac

• Kim SW
• Kang SK
• Rhee DJ
• Lim H
• Lee M
• Yi J
• Lee M
• Yang K
• Ro TI
• Jeong DH

• KMID: 2315771
• DOI: http://doi.org/10.14316/pmp.2015.26.1.1

Abstract

The C-band compact linear accelerator (linac) is being developed at Dongnam Institute of radiological & Medical Sciences (DIRAMS) for medical and industrial applications. This paper was focused on the output measurement of the electron beam generated from the prototype electron linac. The dose rate was measured in unit of cGy/min per unit pulse frequency according to the IAEA TRS-398 protocol. Exradin-A10 Markus type plane parallel chamber used for the measurement was calibrated in terms of dose to water at the reference depth in water. The beam quality index (R50) was determined by the radiochromic film with a solid water phantom approximately due to low energy electrons. As a result, the determined electron beam output was 17.0 cGy/(min.Hz). The results were used to monitor the accelerator performance during the development procedure.

Keyword

Electron beam output; TRS-398 protocol; Prototype linac

MeSH Terms

Particle Accelerators
Water
Water

Figure

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  Fig. 1. The configuration of instruments for the measurement of output with accelerating structure and irradiation head.

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  Fig. 2. Film dosimetry (left) and analysis of percentage depth dose curve (right) for electron beam from the prototype linac.

Reference

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