Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Monte carlo estimation of activation products induced in concrete shielding around electron linac used in an X-ray container inspection system

X-ray 컨테이너 화물검색시스템의 전자선형가속기 주변 콘크리트 차폐벽 내 방사화생성물에 대한 몬테카를로법 평가

  • Cho, Young-Ho (Department of Radiological Science, Catholic University of Daegu)
  • 조영호 (대구가톨릭대학교 방사선학과)
  • Received : 2010.01.12
  • Accepted : 2010.03.18
  • Published : 2010.03.31
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Abstract

Activation products generated by photoneutrons in concrete shielding wall around electron linac were estimated for a high energy X-ray container cargo inspection system. Monte carlo code, MCNPX2.5.0 was used for reference system of 9MeV fixed type dual-direction container cargo inspection system installed at major harbors in Korea. Activation products inventory generated by photoneutron (n,$\gamma$) reaction are estimated, and then radiation dose rate is calculated from the results.

고에너지 X-ray를 투시 방사선원으로 사용한 컨테이너 화물검색시스템에서 생성되는 광중성자에 의해 주변 콘크리트 차폐벽에서 발생되는 방사화생성물을 평가하였다. 몬테카를로 전산해석 코드인 MCNPX2.5.0을 사용하였으며, 참조시스템은 국내 주요 항만에 설치된 9MeV X-ray 고정식 양방향 컨테이너 화물검색시스템이다. 9MeV X-ray 조사에 따라 생성되는 광중성자의 (n,$\gamma$) 반응에 의한 방사화생성물 재고량을 계산하고 이에 따라 야기되는 방사선 피폭선량을 계산하였다.

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References

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