Improvement in the accuracy of polymer gel dosimeters using scintillating fibers
| Autor: | Rachel Bujold, Nicolas M. Tremblay, Martin Lepage, Luc Beaulieu, Vincent Hubert-Tremblay |
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| Rok vydání: | 2010 |
| Předmět: |
chemistry.chemical_classification
History Materials science Dosimeter Physics::Instrumentation and Detectors business.industry Calibration curve Physics::Medical Physics Glass container Polymer Computer Science Applications Education Optics chemistry Measuring instrument Calibration Polymer gel Irradiation business |
| Zdroj: | Journal of Physics: Conference Series. 250:012076 |
| ISSN: | 1742-6596 |
| Popis: | We propose a novel method for the absolute calibration of polyacrylamide gel (PAG) dosimeters with one or more reference scintillating fiber dosimeters inserted inside the gel. Four calibrated scintillating fibers were inserted into a cylindrical glass container filled with a PAG dosimeter irradiated with a wedge filtered 6 MV photon beam. Calibration curves using small glass vials containing the same gel as the cylindrical containers were used to obtain a first calibration curve. This calibration curve was then adjusted with the dose measured with one of the scintillating fibers in a low gradient part of the field using different approaches. Among these, it was found that a translation of the gel calibration curve yielded the highest accuracy with PAG dosimeters. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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