Characterization of Scintillating X-ray Optical Fiber Sensors
The paper presents a set of tests carried out in order to evaluate the design characteristics and the operating performance of a set of six X-ray extrinsic optical fiber sensors. The extrinsic sensor we developed is intended to be used as a low energy X-ray detector for monitoring radiation levels i...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2014-02-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/14/2/3445 |
| _version_ | 1828371629287145472 |
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| author | Dan Sporea Laura Mihai Ion Vâţă Denis McCarthy Sinead O'Keeffe Elfed Lewis |
| author_facet | Dan Sporea Laura Mihai Ion Vâţă Denis McCarthy Sinead O'Keeffe Elfed Lewis |
| author_sort | Dan Sporea |
| collection | DOAJ |
| description | The paper presents a set of tests carried out in order to evaluate the design characteristics and the operating performance of a set of six X-ray extrinsic optical fiber sensors. The extrinsic sensor we developed is intended to be used as a low energy X-ray detector for monitoring radiation levels in radiotherapy, industrial applications and for personnel dosimetry. The reproducibility of the manufacturing process and the characteristics of the sensors were assessed. The sensors dynamic range, linearity, sensitivity, and reproducibility are evaluated through radioluminescence measurements, X-ray fluorescence and X-ray imaging investigations. Their response to the operating conditions of the excitation source was estimated. The effect of the sensors design and implementation, on the collecting efficiency of the radioluminescence signal was measured. The study indicated that the sensors are efficient only in the first 5 mm of the tip, and that a reflective coating can improve their response. Additional tests were done to investigate the concentricity of the sensors tip against the core of the optical fiber guiding the optical signal. The influence of the active material concentration on the sensor response to X-ray was studied. The tests were carried out by measuring the radioluminescence signal with an optical fiber spectrometer and with a Multi-Pixel Photon Counter. |
| first_indexed | 2024-04-14T06:51:58Z |
| format | Article |
| id | doaj.art-fd766d92ee784519b515930cc8ef7ba4 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-14T06:51:58Z |
| publishDate | 2014-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-fd766d92ee784519b515930cc8ef7ba42022-12-22T02:07:01ZengMDPI AGSensors1424-82202014-02-011423445345710.3390/s140203445s140203445Characterization of Scintillating X-ray Optical Fiber SensorsDan Sporea0Laura Mihai1Ion Vâţă2Denis McCarthy3Sinead O'Keeffe4Elfed Lewis5National Institute Laser, Plasma and Radiation Physics, 409 Atomiştilor St., Măgurele RO-077125, RomaniaNational Institute Laser, Plasma and Radiation Physics, 409 Atomiştilor St., Măgurele RO-077125, RomaniaHoria Hulubei" National Institute of Physics and Nuclear Engineering, 30 Reactorului St., Măgurele RO-077125, RomaniaOptical Fibre Sensors Research Centre, ECE Department, University of Limerick, Limerick, IrelandOptical Fibre Sensors Research Centre, ECE Department, University of Limerick, Limerick, IrelandOptical Fibre Sensors Research Centre, ECE Department, University of Limerick, Limerick, IrelandThe paper presents a set of tests carried out in order to evaluate the design characteristics and the operating performance of a set of six X-ray extrinsic optical fiber sensors. The extrinsic sensor we developed is intended to be used as a low energy X-ray detector for monitoring radiation levels in radiotherapy, industrial applications and for personnel dosimetry. The reproducibility of the manufacturing process and the characteristics of the sensors were assessed. The sensors dynamic range, linearity, sensitivity, and reproducibility are evaluated through radioluminescence measurements, X-ray fluorescence and X-ray imaging investigations. Their response to the operating conditions of the excitation source was estimated. The effect of the sensors design and implementation, on the collecting efficiency of the radioluminescence signal was measured. The study indicated that the sensors are efficient only in the first 5 mm of the tip, and that a reflective coating can improve their response. Additional tests were done to investigate the concentricity of the sensors tip against the core of the optical fiber guiding the optical signal. The influence of the active material concentration on the sensor response to X-ray was studied. The tests were carried out by measuring the radioluminescence signal with an optical fiber spectrometer and with a Multi-Pixel Photon Counter.http://www.mdpi.com/1424-8220/14/2/3445fiber optic sensorradiation monitoring in radiotherapy and industrypersonnel dosimetryradioluminescenceX-ray detectorX-ray fluorescenceX-ray tomography |
| spellingShingle | Dan Sporea Laura Mihai Ion Vâţă Denis McCarthy Sinead O'Keeffe Elfed Lewis Characterization of Scintillating X-ray Optical Fiber Sensors Sensors fiber optic sensor radiation monitoring in radiotherapy and industry personnel dosimetry radioluminescence X-ray detector X-ray fluorescence X-ray tomography |
| title | Characterization of Scintillating X-ray Optical Fiber Sensors |
| title_full | Characterization of Scintillating X-ray Optical Fiber Sensors |
| title_fullStr | Characterization of Scintillating X-ray Optical Fiber Sensors |
| title_full_unstemmed | Characterization of Scintillating X-ray Optical Fiber Sensors |
| title_short | Characterization of Scintillating X-ray Optical Fiber Sensors |
| title_sort | characterization of scintillating x ray optical fiber sensors |
| topic | fiber optic sensor radiation monitoring in radiotherapy and industry personnel dosimetry radioluminescence X-ray detector X-ray fluorescence X-ray tomography |
| url | http://www.mdpi.com/1424-8220/14/2/3445 |
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