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https://hdl.handle.net/11147/7751
Title: | Effect of Faraday Mirror Imperfections in a Fiber Optic Current Sensor Dedicated To Iter | Authors: | Karabulut, Doğuş Miazin, Anton Gusarov, Andrei Moreau, Philippe Leysen, Willem Megret, Patrice Wuilpart, Marc |
Keywords: | Fiber optics Plasma diagnosis Polarimetric sensors Calibration accuracy |
Publisher: | Elsevier Ltd. | Source: | Karabulut, D., Miazin, A., Gusarov, A., Leysen, W., Megret, P. and Wuilpart, M. (2019). Effect of Faraday mirror imperfections in a fiber optic current sensor dedicated to ITER. Fusion Engineering and Design, 138, 48-52. doi:10.1016/j.fusengdes.2018.11.011 | Abstract: | Plasma current measurements in ITER are safety-related and must therefore satisfy a very demanding specification. In this paper, the use of the Fiber Optics Current Sensor (FOCS) operating in the reflection mode with a Faraday mirror to perform plasma current measurements is analyzed. Based on the Jones matrix formalism, we performed numerical simulations to investigate the impact of the Faraday mirror detuning on the measurement accuracy. We show that the use of standard commercial components does not allow to satisfy the ITER requirements for the whole plasma current range. A simple solution to the problem is proposed, which consists in taking into account a mirror calibration in the current estimator. We show that the achievable mirror calibration accuracy is sufficient to fulfill the ITER requirements. | URI: | https://doi.org/10.1016/j.fusengdes.2018.11.011 https://hdl.handle.net/11147/7751 |
ISSN: | 0920-3796 0920-3796 |
Appears in Collections: | Electrical - Electronic Engineering / Elektrik - Elektronik Mühendisliği Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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1-s2.0-S0920379618307105-main.pdf | Makale (Article) | 812.76 kB | Adobe PDF | View/Open |
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