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Proceedings Paper

Characterization of Yb-doped silica optical fiber as real-time dosimeter
Author(s): Ivan Veronese; Norberto Chiodini; Simone Cialdi; Eduardo D'Ippolito; Mauro Fasoli; Salvatore Gallo; Eleonora Mones; Anna Vedda; Gianfranco Loi
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Paper Abstract

The near-infrared radioluminescence and dosimetric properties of Yb-doped silica optical fibers, coupled with an optical detector prototype based on an avalanche photo-diode, were studied by irradiating the fibers with clinical beams generated by a Varian Trilogy accelerator. The performances of the system in standard and small field sizes have been also investigated comparing the output factor, percent depth dose and off axis ratio measurements of the prototypal dosimetric system with other commercial sensors.

The results demonstrated that the drawback due to the stem effect in Yb-doped silica optical fibers can be managed in a simple but effective way by optical filtering. These features, together with the accuracy and precision achieved by Ybdoped fibers in relative dose assessments make the device promising for in-vivo dosimetry studies in radiation therapy.

Paper Details

Date Published: 24 August 2017
PDF: 7 pages
Proc. SPIE 10392, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIX, 103921D (24 August 2017); doi: 10.1117/12.2272573
Show Author Affiliations
Ivan Veronese, Univ. degli Studi di Milano (Italy)
National Institute of Nuclear Physics (Italy)
Norberto Chiodini, Univ. degli Studi di Milano-Bicocca (Italy)
Simone Cialdi, Univ. degli Studi di Milano (Italy)
National Institute of Nuclear Physics (Italy)
Eduardo D'Ippolito, Univ. degli Studi di Milano (Italy)
Mauro Fasoli, Univ. degli Studi di Milano-Bicocca (Italy)
Salvatore Gallo, Univ. degli Studi di Milano (Italy)
National Institute of Nuclear Physics (Italy)
Eleonora Mones, Azienda Ospedaliera Maggiore della Carità (Italy)
Anna Vedda, Univ. degli Studi di Milano-Bicocca (Italy)
Gianfranco Loi, Azienda Ospedaliera Maggiore della Carità (Italy)


Published in SPIE Proceedings Vol. 10392:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIX
Arnold Burger; Ralph B. James; Michael Fiederle; Larry Franks; Stephen A. Payne, Editor(s)

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