Exfoliated YBCO filaments for second-generation superconducting cable
Abstract
The second-generation high temperature superconductor (2G HTS) wire is the most enticing conductor for high-field magnets such as accelerator dipoles and compact fusion devices. The key element of the wire is a thin Y1Ba2Cu3O7 (YBCO) layer deposited on a flexible metal substrate. The substrate, which becomes incorporated in the 2G conductor, reduces the electrical and mechanical performance of the wire. This is a process that exfoliates the YBCO layer from the substrate while retaining the critical current density of the superconductor. Ten-centimeter long coupons of exfoliated YBCO layers were manufactured, and detailed structural, electrical, and mechanical characterization were reported here. After exfoliation, the YBCO layer was supported by a 75 μm thick stainless steel foil, which makes for a compact, mechanically stronger, and inexpensive conductor. The critical current density of the filaments was measured at both 77 K and 4.2 K. The exfoliated YBCO retained 90% of the original critical current. Similarly, tests in an external magnetic field at 4.2 K confirmed that the pinning strength of the YBCO layer was also retained following exfoliation.
- Publication Date:
- Research Org.:
- Brookhaven Technology Group, Inc., Stony Brook, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1597661
- Alternate Identifier(s):
- OSTI ID: 1332137
- Grant/Contract Number:
- SC0013856
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Superconductor Science and Technology
- Additional Journal Information:
- Journal Volume: 30; Journal Issue: 1; Conference: 8. Workshop on Mechanical and Electromagnetic Properties of Composite Superconductors MEM 2016, Tallahassee, FL (United States), 21-23 Mar 2016; Journal ID: ISSN 0953-2048
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 2G conductors; exfoliation; cable
Citation Formats
Solovyov, Vyacheslav, and Farrell, Paul. Exfoliated YBCO filaments for second-generation superconducting cable. United States: N. p., 2016.
Web. doi:10.1088/0953-2048/30/1/014006.
Solovyov, Vyacheslav, & Farrell, Paul. Exfoliated YBCO filaments for second-generation superconducting cable. United States. https://doi.org/10.1088/0953-2048/30/1/014006
Solovyov, Vyacheslav, and Farrell, Paul. Tue .
"Exfoliated YBCO filaments for second-generation superconducting cable". United States. https://doi.org/10.1088/0953-2048/30/1/014006. https://www.osti.gov/servlets/purl/1597661.
@article{osti_1597661,
title = {Exfoliated YBCO filaments for second-generation superconducting cable},
author = {Solovyov, Vyacheslav and Farrell, Paul},
abstractNote = {The second-generation high temperature superconductor (2G HTS) wire is the most enticing conductor for high-field magnets such as accelerator dipoles and compact fusion devices. The key element of the wire is a thin Y1Ba2Cu3O7 (YBCO) layer deposited on a flexible metal substrate. The substrate, which becomes incorporated in the 2G conductor, reduces the electrical and mechanical performance of the wire. This is a process that exfoliates the YBCO layer from the substrate while retaining the critical current density of the superconductor. Ten-centimeter long coupons of exfoliated YBCO layers were manufactured, and detailed structural, electrical, and mechanical characterization were reported here. After exfoliation, the YBCO layer was supported by a 75 μm thick stainless steel foil, which makes for a compact, mechanically stronger, and inexpensive conductor. The critical current density of the filaments was measured at both 77 K and 4.2 K. The exfoliated YBCO retained 90% of the original critical current. Similarly, tests in an external magnetic field at 4.2 K confirmed that the pinning strength of the YBCO layer was also retained following exfoliation.},
doi = {10.1088/0953-2048/30/1/014006},
journal = {Superconductor Science and Technology},
number = 1,
volume = 30,
place = {United States},
year = {Tue Nov 15 00:00:00 EST 2016},
month = {Tue Nov 15 00:00:00 EST 2016}
}
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Works referencing / citing this record:
Performance of layer wound epoxy-impregnated coils made from a multifilamentary cable of exfoliated YBCO
journal, April 2019
- Solovyov, Vyacheslav; Rabbani, Saad; Ma, Monan
- Superconductor Science and Technology, Vol. 32, Issue 5
Dipole Magnets Above 20 Tesla: Research Needs for a Path via High-Temperature Superconducting REBCO Conductors
journal, November 2019
- Wang, Xiaorong; Gourlay, Stephen A.; Prestemon, Soren O.
- Instruments, Vol. 3, Issue 4