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http://dx.doi.org/10.5369/JSST.2014.23.4.245

Performance Evaluation of a Fiber-Optic Cerenkov Radiation Sensor System Using a Simulated Spent Fuel Assembly  

Shin, Sang Hun (School of Biomedical Engineering, College of Biomedical & Health Science, BK21 Plus Research Institute of Biomedical Engineering, Konkuk University)
Yoo, Wook Jae (School of Biomedical Engineering, College of Biomedical & Health Science, BK21 Plus Research Institute of Biomedical Engineering, Konkuk University)
Jang, Kyoung Won (School of Biomedical Engineering, College of Biomedical & Health Science, BK21 Plus Research Institute of Biomedical Engineering, Konkuk University)
Cho, Seunghyun (Department of Organic Materials & Fiber Engineering, College of Engineering, Soongsil University)
Park, Byung Gi (Department of Energy & Environment Engineering, College of Engineering, Soonchunhyang University)
Lee, Bongsoo (School of Biomedical Engineering, College of Biomedical & Health Science, BK21 Plus Research Institute of Biomedical Engineering, Konkuk University)
Publication Information
Journal of Sensor Science and Technology / v.23, no.4, 2014 , pp. 245-250 More about this Journal
Abstract
When the charged particle travels in transparent medium with a velocity greater than that of light in the same medium, the electromagnetic field close to the particle polarizes the medium along its path, and then the electrons in the atoms follow the waveform of the pulse which is called as Cerenkov light or radiation. This type of radiation can be easily observed in a spent fuel storage pit. In optical fibers, the Cerenkov light also can be generated due to their dielectric components. Accordingly, the radiation-induced light signals can be obtained using optical fibers without any scintillating material. In this study, to measure the intensities of Cerenkov radiation induced by gamma-rays, we have fabricated the fiber-optic Cerenkov radiation sensor system using silica optical fibers, plastic optical fibers, multi-anode photomultiplier tubes, simulated spent fuel assembly and a scanning system. To characterize the Cerenkov radiation generated in optical fibers, the intensities of Cerenkov radiation generated in the silica and plastic optical fibers were measured. Also, we measured the longitudinal distribution of gamma rays emitted from the Ir-192 isotope by using the fiber-optic Cerenkov radiation sensor system and simulated spent fuel assembly.
Keywords
Cerenkov radiation; Fiber-optic sensor; Gamma ray; Ir-192 isotope; Simulated spent fuel assembly;
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Times Cited By KSCI : 3  (Citation Analysis)
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