https://doi.org/10.1140/epjb/s10051-025-01075-1
Regular Article - Solid State and Materials
Distributed dynamic strain measurement based on Rayleigh scattering distributed fiber and embedded strain gauge for a NbTi superconducting dipole magnet
1
Institute of Modern Physics, Chinese Academy of Sciences, Weiyuan Street, 730000, Lanzhou, Gansu, China
2
Advanced Energy Science and Technology Guangdong Laboratory, South Bank Street, 516000, Huizhou, Guangdong, China
3
University of Chinese Academy of Science, 101408, Beijing, China
Received:
25
March
2025
Accepted:
20
October
2025
Published online:
30
October
2025
A NbTi superconducting dipole magnet was recently developed at the Institute of Modern Physics, Chinese Academy of Sciences, as a prototype coil for an advanced high-field facility. To assess its structural stability and performance throughout the whole operation process, both distributed optical fibers and embedded strain gauges were employed to monitor dynamic global strain distribution. The combination of embedded strain gauges and distributed optical fiber sensing technology provides a multi-dimensional, high-precision measurement method for the health detection of superconducting magnets. Both the global and single-point strains of the magnet system were monitored throughout the operating process, including the cooling and excitation phases. This combined approach establishes a layered monitoring pattern including specific point and distributed strain, facilitating a direct assessment of the overall uniformity of the coil structure and essential support for researching the design and electromagnetic characteristics of superconducting magnets.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
