High Resolution One-Dimensional Dose Measurement Using a Movable Miniature Fiber-Optic Radiation Sensor

2006 ◽  
Vol 321-323 ◽  
pp. 992-995 ◽  
Author(s):  
Bong Soo Lee ◽  
Dong Hyun Cho ◽  
Soon Cheol Chung ◽  
Jeong Han Yi ◽  
Kyung Won Chang ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Dose Distribution ◽  
Fiber Optic ◽  
Light Output ◽  
High Energy ◽  
Optic Radiation ◽  
Plastic Optical Fiber ◽  
Silicon Photodiode ◽  
One Dimensional ◽  
Radiation Sensor

The aim of this study is to develop a new method to measure one-dimensional dose distribution of high-energy electron using a miniature fiber-optic radiation sensor. The measurements are made by a thin plastic optical fiber with an organic scintillating sensor tip. The scintillating light in the visible wavelength range is guided to a silicon photodiode by plastic optical fiber in order to convert light output to electrical signal. The one-dimensional spatial dependence of elctron beam is measured by moving the sensor tip with uniform speed. It is shown that this fiber-optic radiation sensor has better spatial resolution than conventional ion chamber and it needs much less time to measure one-dimensional dose distribution in the high radiation fields.

Development of One-dimensional Fiber-Optic Radiation Sensor for Measuring Dose Distributions of High Energy Photon Beams

2007 ◽  
Vol 14 (5) ◽  
pp. 351-354 ◽  
Author(s):  
Bongsoo Lee ◽  
Kyoung Won Jang ◽  
Dong Hyun Cho ◽  
Wook Jae Yoo ◽  
Hyung Shik Kim ◽  
...  
Keyword(s):  
Fiber Optic ◽  
High Energy ◽  
High Energy Photon ◽  
Optic Radiation ◽  
Photon Beams ◽  
Energy Photon ◽  
Dose Distributions ◽  
One Dimensional ◽  
Radiation Sensor

Performance Evaluation of Scintillation Fiber-Optic Dosimeter for Measuring High-Energy Photon Beams

2011 ◽  
Vol 378-379 ◽  
pp. 701-705
Author(s):  
Wook Jae Yoo ◽  
Kyoung Won Jang ◽  
Jin Soo Moon ◽  
Ki Tek Han ◽  
Bong Soo Lee ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Ionization Chamber ◽  
Fiber Optic ◽  
High Energy ◽  
High Energy Photon ◽  
Plastic Optical Fiber ◽  
Photon Beams ◽  
Energy Photon ◽  
Measuring Device ◽  
Radiotherapy Dosimetry

In this study, we have fabricated a fiber-optic dosimeter using an organic scintillator and a plastic optical fiber for measuring percentage depth doses with radiotherapeutic high energy photon beams. The scintillating light generated in an organic dosimeter probe embedded in a solid water phantom is guided by a plastic optical fiber to the light-measuring device. Using this fiber-optic dosimeter, percentage depth doses are measured with 6 and 15 MV energies of photon beams whose field sizes are 2 x 2 and 10 x 10 cm2, and the results are compared with those measured using conventional dosimeters such as an ionization chamber and EBT films used in radiotherapy dosimetry.

scholarly journals Evaluation of the Detection Efficiency of LYSO Scintillator in the Fiber-Optic Radiation Sensor

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Chan Hee Park ◽  
Arim Lee ◽  
Rinah Kim ◽  
Joo Hyun Moon
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Fiber Optic ◽  
Detection Efficiency ◽  
Radiation Detection ◽  
Refraction Index ◽  
Fiber Optic Sensor ◽  
Optic Radiation ◽  
Spent Fuel ◽  
Radiation Sensor

The aim of this study was to develop and evaluate fiber-optic sensors for the remote detection of gamma rays in areas that are difficult to access, such as a spent fuel pool. The fiber-optic sensor consists of a light-generating probe, such as scintillators for radiation detection, plastic optical fibers, and light-measuring devices, such as PMT. The (Lu,Y)2SiO5:Ce(LYSO:Ce) scintillator was chosen as the light-generating probe. The (Lu,Y)2SiO5:Ce(LYSO:Ce) scintillator has higher scintillation efficiency than the others and transmits light well through an optical fiber because its refraction index is similar to the refractive index of the optical fiber. The fiber-optic radiation sensor using the (Lu,Y)2SiO5:Ce(LYSO:Ce) scintillator was evaluated in terms of the detection efficiency and reproducibility for examining its applicability as a radiation sensor.

Measurement of Cerenkov light in a fiber-optic radiation sensor by high energy photon and electron beams

2010 ◽  
Vol 56 (3) ◽  
pp. 765-769 ◽  
Author(s):  
Kyoung Won Jang ◽  
Dong Hyun Cho ◽  
Wook Jae Yoo ◽  
Jeong Ki Seo ◽  
Ji Yeon Heo ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Electron Beams ◽  
High Energy ◽  
High Energy Photon ◽  
Optic Radiation ◽  
Energy Photon ◽  
Radiation Sensor ◽  
Cerenkov Light

Measurements and Characterization of Cerenkov Light in Fiber-Optic Radiation Sensor Irradiated by High-Energy Electron Beam

2006 ◽  
Vol 45 (10A) ◽  
pp. 7980-7982 ◽  
Author(s):  
Bongsoo Lee ◽  
Dong Hyun Cho ◽  
Kyoung Won Jang ◽  
Soon-Cheol Chung ◽  
Jeong-Whan Lee ◽  
...  
Keyword(s):  
Electron Beam ◽  
Fiber Optic ◽  
High Energy ◽  
Energy Electron ◽  
Optic Radiation ◽  
High Energy Electron ◽  
Radiation Sensor ◽  
Cerenkov Light

MEASUREMENTS OF HIGH ENERGY X-RAY DOSE DISTRIBUTIONS USING MULTI-DIMENSIONAL FIBER-OPTIC RADIATION DETECTORS

2008 ◽  
Vol 22 (11) ◽  
pp. 797-802 ◽  
Author(s):  
KYOUNG WON JANG ◽  
DONG HYUN CHO ◽  
SANG HUN SHIN ◽  
BONGSOO LEE ◽  
SOON-CHEOL CHUNG ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Fiber Optic ◽  
Radiation Detectors ◽  
High Energy ◽  
Two Dimensional ◽  
Optic Radiation ◽  
Dose Distributions ◽  
Detector Arrays ◽  
One Dimensional ◽  
X Ray

In this study, we have fabricated multi-dimensional fiber-optic radiation detectors with organic scintillators, plastic optical fibers and photo-detectors such as photodiode array and a charge-coupled device. To measure the X-ray dose distributions of the clinical linear accelerator in the tissue-equivalent medium, we have fabricated polymethylmethacrylate phantoms which have one-dimensional and two-dimensional fiber-optic detector arrays inside. The one-dimensional and two-dimensional detector arrays can be used to measure percent depth doses and surface dose distributions of high energy X-ray in the phantom respectively.

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