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KMID : 0357520170400020281
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Journal of Radiological Science and Technology
2017 Volume.40 No. 2 p.281 ~ p.287
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A study on the calculation of the shielding wall thickness in Medical Linear Accelerat
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Lee Dong-Yeon
Park Eun-Tae
Kim Jung-Hoon
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Abstract
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The purpose of this study is to calculate the thickness of shielding for concrete which is mainly used for radiation shielding and study of the walls constructed to shield medical linear accelerator. The optimal shielding thickness was calculated using MCNPX(Ver.2.5.0) for 10 MV of photon beam energy generated by linear accelerator. As a result, the TVL for photon shielding was formed at 50~100 cm for pure concrete and concrete with Boron+polyethylene at 80~100 cm. The neutron shielding was calculated 100~140 cm for pure concrete and concrete with Boron+polyethylene at 90~100 cm. Based on this study, the concrete is considered to be most efficient method of using steel plates and adding Boron+polyethylene th the concrete.
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KEYWORD
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Radiation shield , LINAC , Shielding wall , Concrete , MCNPX
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