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Part 1: Document Description
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Citation |
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Title: |
Termination Methods for REBCO Tape High-Current Cable Conductors |
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Identification Number: |
doi:10.7910/DVN/L2LTSC |
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Distributor: |
Harvard Dataverse |
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Date of Distribution: |
2018-10-18 |
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Version: |
1 |
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Bibliographic Citation: |
M. Takayasu, L. Chiesa, J.V. Minervini, 2018, "Termination Methods for REBCO Tape High-Current Cable Conductors", https://doi.org/10.7910/DVN/L2LTSC, Harvard Dataverse, V1, UNF:6:yQxOguHqSMzWfFckd5mBrA== [fileUNF] |
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Citation |
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Title: |
Termination Methods for REBCO Tape High-Current Cable Conductors |
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Identification Number: |
doi:10.7910/DVN/L2LTSC |
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Authoring Entity: |
M. Takayasu, L. Chiesa, J.V. Minervini |
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Distributor: |
Harvard Dataverse |
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Holdings Information: |
https://doi.org/10.7910/DVN/L2LTSC |
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Study Scope |
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Keywords: |
Physics, BSCCO., cable joint, Cable termination, high temperature superconductor, HTS cable, REBCO, TSTC, twisted stacked-tape cable, YBCO |
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Abstract: |
Three types of joint termination methods for a 2G HTS cable have been developed: YBCO-BSCCO, YBCO-YBCO, and Folding-fan soldered terminations. For the YBCO-BSCCO terminator, each YBCO tape of a cable is connected to a BSCCO tape while the other ends of BSCCO tapes are bundled together and soldered inside a copper tube. The same termination was tested more than 30 times in liquid nitrogen and helium without any problems. It was operated at 10 kA in liquid helium and more than 2 kA in liquid nitrogen. The YBCO-BSCCO termination has been confirmed to be very easy to fabricate and convenient for a cable test since it is reusable. A YBCO tape termination method without BSCCO tape also has been proposed. Both terminations will be very useful for 2G HTS cables. These terminations are demountable if they are not soldered at the junction between tapes. Joint resistance is greatly reduced with increasing applied pressure especially for YBCO-YBCO contact joints. However, in the case of a YBCO-BSCCO joint, the BSCCO tapes may degrade at high pressure. The contact pressure should be optimized to obtain low joint resistance. If the contact surfaces of YBCO-BSCCO and YBCO-YBCO terminations are soldered for a permanent joint, the termination resistances are lower, and better uniformity will be achieved. Another termination is the Folding-fan termination. It is a soldered joint. Joint resistance distributions among cable tapes for these termination methods have been evaluated. Mechanical contact joint resistance distributions between YBCO-BSCCO tapes and YBCO-YBCO tapes have been measured under various contact pressures and contact surface conditions at 77 K. By optimization of the applied contact pressure and contact surface treatment techniques the contact joint resistance of a termination joint can be reduced and a better uniformity can be obtained. We also discussed effects on a cable performance due to no-uniformity of termination resistances, a loop resistance between two tapes in a termination of a cable, and a series operation of two 2G YBCO Twisted Stacked-Tape Cable (TSTC) conductors. |
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Notes: |
<a href="http://library.psfc.mit.edu/catalog/reports/2010/16ja/16ja041/abstract.php">PSFC REPORT PSFC/JA-16-41</a><br /><br />This work was supported by the U. S. Department of Energy, Office of Fusion Energy Science under Grants: DE-FC02-93ER54186, and partially DE-SC0004062 and Supercon DOE STTR Phase I DE-SC0007722 and Phase II DE-SC0004269. |
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Methodology and Processing |
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Sources Statement |
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Data Access |
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Notes: |
This dataset is made available without information on how it can be used. You should communicate with the Contact(s) specified before use. |
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Other Study Description Materials |
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File Description--f3241834 |
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File: 16ja041_fig4-34_data.tab |
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Notes: |
UNF:6:yQxOguHqSMzWfFckd5mBrA== |
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List of Variables: | |
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Variables |
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f3241834 Location: |
Summary Statistics: StDev NaN; Mean NaN; Max. NaN; Min. NaN; Valid 0.0 Variable Format: numeric Notes: UNF:6:1zmqED41ql79D+Sd0U2TYA== |
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f3241834 Location: |
Variable Format: character Notes: UNF:6:KlZGbNBFxIl6X6Yms3XOiw== |
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f3241834 Location: |
Summary Statistics: StDev 16.795842246860264; Mean 18.109870454545455; Min. 0.9828; Max. 50.0; Valid 88.0 Variable Format: numeric Notes: UNF:6:ET6vm45qadSRGWuxzUwd9g== |
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f3241834 Location: |
Summary Statistics: Min. 0.8832; Mean 21.735772727272728; Valid 88.0; Max. 100.0; StDev 27.983976768762687 Variable Format: numeric Notes: UNF:6:AWbXnQA5/hczBFoFqTy2ig== |
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f3241834 Location: |
Variable Format: character Notes: UNF:6:D6HINyUiG5wAG9qXItyGwQ== |
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f3241834 Location: |
Summary Statistics: Max. 400.0; Min. 0.6333; Mean 46.30238863636364; Valid 88.0; StDev 113.10040665088884 Variable Format: numeric Notes: UNF:6:iuJsRm06fMIUrIwUBw8jCA== |
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f3241834 Location: |
Summary Statistics: Mean 81.73717272727272; Valid 88.0; Min. 0.5917; Max. 800.0; StDev 228.69206129174006 Variable Format: numeric Notes: UNF:6:t31K1dtq4TCvYo4N1hZKFQ== |
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f3241834 Location: |
Summary Statistics: StDev 344.5097118259724; Valid 88.0; Mean 117.21592954545454; Min. 0.5778; Max. 1200.0 Variable Format: numeric Notes: UNF:6:4UvmDMYUJv6HdyRuuQ93Xg== |
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Label: |
16ja041_archival_manuscript.pdf |
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Text: | |
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Notes: |
application/pdf |