Magnetic shielding of long paraboloid structures in the inhomogeneous magnetic field
Kvitkovic, J and Burnside, K and Zhang, M and Pamidi, S (2020) Magnetic shielding of long paraboloid structures in the inhomogeneous magnetic field. Journal of Physics: Conference Series, 1559 (1). 012117. ISSN 1742-6588 (https://doi.org/10.1088/1742-6596/1559/1/012117)
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Abstract
Abstract: Shielding efficacy of the high-temperature superconducting (HTS) magnetic shields depends on the superconductor properties and on the orientation of the external magnetic field. For precise magnetic field measurements in areas with changing direction of magnetic noise it is important to reduce both the parallel and perpendicular components of the magnetic field. We have designed and fabricated magnetic shields of 25 cm long paraboloid shape with closed sides from second-generation HTS tapes. We have characterized HTS shields in DC and variable frequency AC magnetic fields at 77 K above a copper electromagnet acting as the source of inhomogeneous magnetic noise. The HTS magnetic shields reduce the magnetic field noise penetration and enhance the sensitivity of magnetic field sensors. The measurements were performed with the magnetic shield placed between the noise source and the sensor. 2D finite element analysis using Comsol model was generated and the results were compared with the experimental data of magnetic field dependences of the shielding factor (SF).
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Item type: Article ID code: 73456 Dates: DateEvent19 June 2020Published1 September 2019AcceptedSubjects: Science > Physics Department: Faculty of Engineering > Electronic and Electrical Engineering Depositing user: Pure Administrator Date deposited: 04 Aug 2020 15:37 Last modified: 14 Aug 2024 01:35 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/73456