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Contact Resistance Between Two Rebco Tapes Under Load And Load Cycles

Title: Contact Resistance Between Two Rebco Tapes Under Load And Load Cycles.
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Name(s): Lu, Jun, author
Goddard, Robert, author
Han, Ke, author
Hahn, Seungyong, author
Type of Resource: text
Genre: Journal Article
Text
Journal Article
Date Issued: 2017-04
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: No-insulation (NI) REBCO magnets have many advantages. They are self-protecting, and therefore do not need quench detection and protection, which can be very challenging to implement in a high T-c superconducting magnet. Moreover, by removing the insulation and allowing thinner copper stabilizers, NI REBCO magnets have significantly higher engineering current density and higher mechanical strength. On the other hand, NI REBCO magnets have the drawbacks of long magnet charging time and high field ramp loss. In principle, these drawbacks can be mitigated by managing the turn-to-turn contact resistivity (R-c). Evidently, the first step toward managing R-c is to establish a reliable method of accurate R-c measurement. In this paper, we present experimental R-c measurements for REBCO tapes as a function of mechanical load up to 144 MPa and load cycles up to 14. We find that R-c is in the range of 26-100 mu Omega center dot cm(2), and that it decreases with increasing pressure, and gradually increases with the number of load cycles. The results are discussed in the framework of Holm's electric contact theory.
Identifier: FSU_libsubv1_wos_000395858000001 (IID), 10.1088/1361-6668/aa5b05 (DOI)
Keywords: no-insulation, conductor, contact resistance, copper, mechanical load, oxidation, rebco
Publication Note: The publisher's version of record is available at https://doi.org/10.1088/1361-6668/aa5b05
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000395858000001
Owner Institution: FSU
Is Part Of: Superconductor Science & Technology.
0953-2048
Issue: iss. 4, vol. 30

Choose the citation style.
Lu, J., Goddard, R., Han, K., & Hahn, S. (2017). Contact Resistance Between Two Rebco Tapes Under Load And Load Cycles. Superconductor Science & Technology. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000395858000001