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The effect of in situ irradiation on the superconducting performance of REBa2Cu3O7−δ-coated conductors

Abstract:
Commercial fusion power plants will require strong magnetic fields that can only be achieved using state-of-the-art high-temperature superconductors in the form of REBa2Cu3O7−δ-coated conductors. In operation in a fusion machine, the magnet windings will be exposed to fast neutrons that are known to adversely affect the superconducting properties of REBa2Cu3O7−δ compounds. However, very little is known about how these materials will perform when they are irradiated at cryogenic temperatures. Here, we use a bespoke in situ test rig to show that helium ion irradiation produces a similar degradation in properties regardless of temperature, but room-temperature annealing leads to substantial recovery in the properties of cold-irradiated samples. We also report the first attempt at measuring the superconducting properties while the ion beam is incident on the sample, showing that the current that the superconductor can sustain is reduced by a factor of three when the beam is on.
Publication status:
Published
Peer review status:
Peer reviewed

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Files:
Publisher copy:
10.1557/s43577-022-00473-5

Authors


More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author
ORCID:
0000-0003-4691-2796
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author


Publisher:
Springer Nature
Journal:
MRS Bulletin More from this journal
Volume:
48
Issue:
7
Pages:
710–719
Publication date:
2023-03-07
Acceptance date:
2022-12-21
DOI:
EISSN:
1938-1425
ISSN:
0883-7694


Language:
English
Keywords:
Pubs id:
1331341
Local pid:
pubs:1331341
Deposit date:
2023-03-06

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