Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Removal of Cerenkov Light in Fiber-optic Radiation Sensor Using Optical Filters

광학 필터를 이용한 광섬유 방사선 센서의 체렌코프 빛 제거

  • Jang, Kyoung-Won (School of Biomedical Engineering, College of Biomedical & Health, Konkuk University) ;
  • Lee, Bong-Soo (School of Biomedical Engineering, College of Biomedical & Health, Konkuk University) ;
  • Cho, Dong-Hyun (School of Biomedical Engineering, College of Biomedical & Health, Konkuk University) ;
  • Kim, Hyung-Shik (School of Biomedical Engineering, College of Biomedical & Health, Konkuk University) ;
  • Yi, Jeong-Han (School of Biomedical Engineering, College of Biomedical & Health, Konkuk University) ;
  • Lee, Jeong-Whan (School of Biomedical Engineering, College of Biomedical & Health, Konkuk University) ;
  • Kim, Sin (Department of Nuclear and Energy Engineering, College of Engineering, Cheju National University) ;
  • Cho, Hyo-Sung (Department of Radiation Science, Institute of Health Science, Yonsei University)
  • 장경원 (건국대학교 의료생명대학 의학공학부) ;
  • 이봉수 (건국대학교 의료생명대학 의학공학부) ;
  • 조동현 (건국대학교 의료생명대학 의학공학부) ;
  • 김형식 (건국대학교 의료생명대학 의학공학부) ;
  • 이정한 (건국대학교 의료생명대학 의학공학부) ;
  • 이정환 (건국대학교 의료생명대학 의학공학부) ;
  • 김신 (제주대학교 공과대학 에너지공학과) ;
  • 조효성 (연세대학교 보건대학 방사선학과)
  • Published : 2006.04.01
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Abstract

In this study, a miniature fiber-optic radiation sensor has been developed using a water-equivalent organic scintillator for electron beam therapy dosimetry. The intensity of Cerenkov light is measured and characterized as a function of the incident angle of the electron beam from a LINAC. Also, a subtraction method using a background optical fiber without a scintillator and an optical discrimination method using optical filters are investigated to remove Cerenkov light, which could cause problems or limit the accuracy for detecting a fluorescent light signal in a fiber-optic radiation sensor.

본 연구에서는 유기 섬광체와 플라스틱 광섬유를 이용하여 치료용 전자선의 계측을 위한 광섬유 방사선 센서를 제작하였다. 또한, 선형가속기에서 발생되는 고 에너지 전자선에 의해 광섬유 방사선 센서를 이용한 전자선 계측에 있어 방해요소로 존재하는 체렌코프 빛을 감법 및 광학 필터링을 이용하여 제거하였고 두 가지방법들을 비교, 분석하였다.

Keywords

References

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