Please use this identifier to cite or link to this item: 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
Issue Date: Jan-2019
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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