Distributed Poloidal Magnetic Field Measurement in Tokamaks Using Polarization-Sensitive Reflectometric Fiber Optic Sensor Article Swipe
Prasad Dandu
,
A. Gusarov
,
Willem Leysen
,
P. Beaumont
,
Marc Wuilpart
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.3390/s23135923
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.3390/s23135923
Determination of the poloidal magnetic field distribution in tokamaks is of prime importance for the successful operation of tokamaks. In this paper, we propose a polarization-sensitive reflectometry-based optical fiber sensor for measuring the spatial distribution of the poloidal magnetic field in tokamaks. The measurement method exploits the Rayleigh backscattering and Faraday magneto-optic effect in optical fibers. The former is an intrinsic property of optical fibers and enables distributed polarization measurements, while the latter arises in the presence of a magnetic field parallel to the optical fiber axis and rotates the polarization state of the light. When an optical fiber is looped around a toroidal section of the vacuum vessel, the local polarization rotation of the light is proportional to the local poloidal magnetic field in the tokamak. The proposed method is discussed theoretically and experimentally using the results from JET. The obtained magnetic field measurement shows a good agreement with that of the internal discrete coils. A potential solution to recover the magnetic field data from the noise-affected region of the optical measurement is proposed and is demonstrated through simulations using the JET magnetic field configuration.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3390/s23135923
- https://www.mdpi.com/1424-8220/23/13/5923/pdf?version=1687776307
- OA Status
- gold
- Cited By
- 3
- References
- 65
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4382459980
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
-
https://openalex.org/W4382459980Canonical identifier for this work in OpenAlex
- DOI
-
https://doi.org/10.3390/s23135923Digital Object Identifier
- Title
-
Distributed Poloidal Magnetic Field Measurement in Tokamaks Using Polarization-Sensitive Reflectometric Fiber Optic SensorWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2023Year of publication
- Publication date
-
2023-06-26Full publication date if available
- Authors
-
Prasad Dandu, A. Gusarov, Willem Leysen, P. Beaumont, Marc WuilpartList of authors in order
- Landing page
-
https://doi.org/10.3390/s23135923Publisher landing page
- PDF URL
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https://www.mdpi.com/1424-8220/23/13/5923/pdf?version=1687776307Direct link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
-
https://www.mdpi.com/1424-8220/23/13/5923/pdf?version=1687776307Direct OA link when available
- Concepts
-
Tokamak, Faraday effect, Magnetic field, Reflectometry, Polarization (electrochemistry), Optical fiber, Physics, Optics, Fiber optic sensor, Toroid, Toroidal and poloidal, Computational physics, Plasma, Chemistry, Computer vision, Computer science, Quantum mechanics, Physical chemistry, Time domainTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
3Total citation count in OpenAlex
- Citations by year (recent)
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2025: 3Per-year citation counts (last 5 years)
- References (count)
-
65Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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