Low radiation dose calibration and theoretical model of an optical fiber dosimeter for the International Space Station

The optical-fiber-based dosimeter of the LUMINA project was deployed in August 2021 in the International Space Station in the framework of the Alpha mission. The sensing elements of the dosimeter are P-doped optical fibers, which were proven to be excellent candidates for dosimetry applications. The...

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Bibliographic Details
Published in:Applied optics (2004) 2023-06, Vol.62 (16), p.E43
Main Authors: Di Francesca, Diego, Balcon, Nicolas, Cheiney, Pierrick, Chesta, Enrico, Clement, Florence, Girard, Sylvain, Mekki, Julien, Melin, Gilles, Morana, Adriana, Roche, Martin, Ricci, Daniel
Format: Article
Language:English
Subjects:
Calibration
Doped fibers
Dosimeters
Engineering Sciences
International Space Station
Optical fibers
Radiation dosage
Room temperature
Silicon dioxide
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Summary:The optical-fiber-based dosimeter of the LUMINA project was deployed in August 2021 in the International Space Station in the framework of the Alpha mission. The sensing elements of the dosimeter are P-doped optical fibers, which were proven to be excellent candidates for dosimetry applications. The twofold objective of this paper is to provide a theoretical model for the radiation response of the dosimeter and to report on the experimental work carried out at CERN for the qualification and calibration of the engineering model of the LUMINA dosimeter. Combining the theoretical response and experimental data, the calibration curve of the flight model is obtained. Finally, this study broadens the investigation of the room temperature radiation response of P-doped optical fibers in a range of dose rates 10 4 times lower than previously reported, from 21µGy(SiO 2 )/h to 145mGy(SiO 2 )/h.
ISSN:1559-128X
2155-3165
DOI:10.1364/AO.483560