Magnetic screening behavior of hybrid high-temperature superconducting screens subjected to successive excitation cycles: experiments and numerical study - 2025
Magnetic screening behavior of hybrid high-temperature superconducting screens subjected to successive excitation cycles: experiments and numerical study
Magnetic shielding; shielding; large-scale applications; coated conductors; bulk conductors; HTS coils; magnetic field measurements
Abstract :
[en] Combining high-temperature superconducting bulks and jointless closed-loop coated conductors recently demonstrated promising magnetic shielding/screening properties when they are zero-field cooled and subjected to an inhomogeneous applied field. The present work focuses on studying how their screening properties evolve if several magnetic field excitation cycles are applied, as it is the case in practical applications. This study is carried out both experimentally and numerically. The main result is that more than 95% of the field attenuation (screening factor SF) obtained after the first ramp still remain after 300 cycles. This result is explained by using the numerically computed current density distribution in the bulk alone. The slight decrease in SF after several cycles is found to be smaller than the field attenuation arising from conventional current re laxation (or flux creep) if the magnetic field is kept constant after the first increasing ramp. These results demonstrate the potential of such superconducting screens for practical applications with a large number of excitation applied field cycles.
Disciplines :
Electrical & electronics engineering Physics
Author, co-author :
Rotheudt, Nicolas ; Université de Liège - ULiège > Montefiore Institute of Electrical Engineering and Computer Science
Fagnard, Jean-François ; Université de Liège - ULiège > Montefiore Institute of Electrical Engineering and Computer Science
Hlasek, Tomas ; CAN SUPERCONDUCTORS, s.r.o., Kamenice, Czech Republic ; University of Chemistry and Technology, Department of Inorganic Chemistry, Prague, Czech Republic
Plechacek, Jan; CAN SUPERCONDUCTORS, s.r.o., Kamenice, Czech Republic
Vanderbemden, Philippe ; Université de Liège - ULiège > Département d'électricité, électronique et informatique (Institut Montefiore) > Capteurs et systèmes de mesures électriques
Language :
English
Title :
Magnetic screening behavior of hybrid high-temperature superconducting screens subjected to successive excitation cycles: experiments and numerical study
Publication date :
23 December 2025
Journal title :
IEEE Transactions on Applied Superconductivity
ISSN :
1051-8223
Publisher :
Institute of Electrical and Electronics Engineers Inc.
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