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http://dx.doi.org/10.5369/JSST.2006.15.3.186

Measurements and characterizations of cerenkov light in fiber-optic radiation sensor irradiated by high energy electron beam  

Jang, Kyoung-Won (School of Biomedical Engineering, College of Biomedical & Health Science)
Cho, Dong-Hyun (School of Biomedical Engineering, College of Biomedical & Health Science)
Jeong, Sun-Cheol (School of Biomedical Engineering, College of Biomedical & Health Science)
Jun, Jae-Hun (School of Biomedical Engineering, College of Biomedical & Health Science)
Lee, Bong-Soo (School of Biomedical Engineering, College of Biomedical & Health Science)
Kim, Sin (Department of Nuclear & Energy Engineering, Cheju National University)
Cho, Hyo-Sung (Basic Atomic Energy Research Institute and Department of Radiological Science)
Park, Sung-Yong (Center for Proton Therapy, National Cancer Center)
Shin, Dong-Ho (Center for Proton Therapy, National Cancer Center)
Publication Information
Journal of Sensor Science and Technology / v.15, no.3, 2006 , pp. 186-191 More about this Journal
Abstract
In general, Cerenkov light is produced by a charged particle that passes through a medium with a velocity greater than that of visible light. Although the wavelength of Cerenkov light is very broad, the peak is in the almost visible range from 400 to 480 nm. Therefore, it always causes a problem to detect a real light signal that is generated in the scintillator on the fiber-optic sensor tip for dose measurements of high-energy electron beam. The objectives of this study are to measure, characterize and remove Cerenkov light generated in a fiber-optic radiation sensor tip to detect a real light signal from the scintillator. In this study, the intensity of Cerenkov light is measured and characterized as a function of incident angle of electron beam from a LINAC, and as a function of the energy of electron beam. As a measuring device, a photodiode-amplifier system is used, and a subtraction method using a background optical fiber is investigated to remove Cerenkov light.
Keywords
Cerenkov light; fiber-optic sensor; scintillator; LINAC;
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Times Cited By KSCI : 2  (Citation Analysis)
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1 B. S. Lee, J. Y. Hong, Y. M. Hwang, and S. H. Cho, 'Frasibility study on the development of fiber-opti c pH sensor for endoscope ', J. ofthe Korean Sensors Society, vol. 13, no. 3, pp. 213-217, 2004   DOI
2 Khan. Faiz M. The Physics of Radiation Therapy 2nd ed. (Williams & Wilkins, USA), pp. 369-371, 1994
3 B. M. Rogina and B. Vojnovic, 'Applicationof optical fiber sensors for radiation dosimetry', Radiation Measurements, vol. 26, no. 4, pp. 599-602, 1996   DOI   ScienceOn
4 E. Takada, A. Kimura, Y. Hosono, H. Takahashi, and M. Nakazawa, 'Radiation distribution sensor with optical fibers for high radiation fields', J. of Nucl. Sci. and Tech., vol. 36, no. 8, pp. 641-645, Aug. 1999   DOI
5 A. S. Bedder, T. R. Mackie, and F. H. Attix, 'Cerenkov light generated in optical fibers and other light pipes irradiated by electron beams', Phys. Med. Biol., vol. 37, pp. 925-935, 1992   DOI   ScienceOn
6 S. F. de Boer, A. S. Beddar, and J. A. Rawlison, 'Optical filtering and spectral measurements of radiation-induced light in plastic scintillation dosimetry', Phys. Med. Biol., vol. 38, pp. 945-958, 1993   DOI   ScienceOn
7 Knoll, Glenn F. Knoll, Radiation ditection and measurement - 3rd ed. (John Wiley & Sons, New York), pp. 7 11-713, 1999.
8 B. Lee, W. Y. Choi, and J. K. Walker, 'Polymer- polymer miscibility study for plastic gradient index optical fiber', Polymer Eng. and Sci., vol. 40, no. 9, pp. 1996-1999, Sep. 2000   DOI   ScienceOn
9 Y. M. Hwang, D. H. Cho, B. S. Lee, H. S. Cho, and S. Kim, 'Fabrication and characteri zation of plastic fiber-optic radiation sensor tips using inorganic scintillator material', J. ofthe Korean Sensors Society, vol. 14, no. 4, pp. 244-249, 2005   DOI