Characterization of Yb-doped silica optical fiber as real-time dosimeter

被引：0

作者：

Veronese, Ivan ^{[1
,2
]}

Chiodini, Norberto ^{[3
]}

Cialdi, Simone ^{[1
,2
]}

D'Ippolito, Eduardo ^{[1
]}

Fasoli, Mauro ^{[3
]}

Gallo, Salvatore ^{[1
,2
]}

Mones, Eleonora ^{[4
]}

Vedda, Anna ^{[3
]}

Loi, Gianfranco ^{[4
]}

机构：

[1] Univ Milan, Dept Phys, Milan, Italy

[2] Natl Inst Nucl Phys INFN, Sect Milan, Milan, Italy

[3] Univ Milano Bicocca, Dipartimento Sci Mat, Milan, Italy

[4] Azienda Osped Maggiore Carita, Med Phys Dept, Novara, Italy

来源：

HARD X-RAY, GAMMA-RAY, AND NEUTRON DETECTOR PHYSICS XIX | 2017年 / 10392卷

关键词：

Ytterbium; optical fiber; radioluminescence; Cerenkov; dosimetry; doped silica; radiotherapy; CERENKOV RADIATION; ELECTRON-BEAMS; FAILURE MODE; RADIOTHERAPY; SCINTILLATOR; SYSTEM; IONS;

D O I：

10.1117/12.2272573

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 Yb-doped fibers in relative dose assessments make the device promising for in-vivo dosimetry studies in radiation therapy.

引用

页数：7

共 34 条

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