Design and testing of a high temperature superconducting current lead

J. L. Wu; J. T. Dederer; P. W. Eckels; S. K. Singh; J. R. Hull; R. B. Poeppel; C. A. Youngdahl; J. P. Singh; M. T. Lanagan; U. Balachandran

doi:10.1109/20.133559

Design and testing of a high temperature superconducting current lead

J. L. Wu, J. T. Dederer, P. W. Eckels, S. K. Singh, J. R. Hull, R. B. Poeppel, C. A. Youngdahl, J. P. Singh, M. T. Lanagan, U. Balachandran

Research output: Contribution to journal › Article › peer-review

39 Scopus citations

Abstract

The high critical temperature and low thermal conductivity of the ceramic superconductor Y-Ba-Cu-O were utilized to reduce the Joule heating and the heat leak in a vapor-cooled current lead design of nominally l-kA capacity. The lead consists of a lower superconducting part and an upper normal metal (copper) part. The superconducting part is an assembly of twenty rectangular bars fabricated from a composite of Y-Ba-Cu-O and Ag (15% vol.) This part is designed to operate below the critical temperature of the ceramic superconductor. The copper part, consisting of twenty copper wires, extends outside of the cryostat and interfaces to the room temperature power supply. The lead was successfully tested in a liquid helium cryostat for currents up to 2 kA. At the optimum operating currents of 1.7 - 1.8 kA, the helium boil-off measurements show a heat leak reduction of approximately 40% from the conventional designs. Details of the design, fabrication issues, and the testing are presented.

Original language	English (US)
Pages (from-to)	1861-1865
Number of pages	5
Journal	IEEE Transactions on Magnetics
Volume	27
Issue number	2
DOIs	https://doi.org/10.1109/20.133559
State	Published - Mar 1991

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.1109/20.133559

Cite this

@article{3ba14e52680c4fae9e67378478075b4b,

title = "Design and testing of a high temperature superconducting current lead",

abstract = "The high critical temperature and low thermal conductivity of the ceramic superconductor Y-Ba-Cu-O were utilized to reduce the Joule heating and the heat leak in a vapor-cooled current lead design of nominally l-kA capacity. The lead consists of a lower superconducting part and an upper normal metal (copper) part. The superconducting part is an assembly of twenty rectangular bars fabricated from a composite of Y-Ba-Cu-O and Ag (15% vol.) This part is designed to operate below the critical temperature of the ceramic superconductor. The copper part, consisting of twenty copper wires, extends outside of the cryostat and interfaces to the room temperature power supply. The lead was successfully tested in a liquid helium cryostat for currents up to 2 kA. At the optimum operating currents of 1.7 - 1.8 kA, the helium boil-off measurements show a heat leak reduction of approximately 40% from the conventional designs. Details of the design, fabrication issues, and the testing are presented.",

author = "Wu, {J. L.} and Dederer, {J. T.} and Eckels, {P. W.} and Singh, {S. K.} and Hull, {J. R.} and Poeppel, {R. B.} and Youngdahl, {C. A.} and Singh, {J. P.} and Lanagan, {M. T.} and U. Balachandran",

note = "Funding Information: The authors are grateful to the Westinghouse Electric Corporation and Argonne National Laboratory for permission to publish this paper. This work is performed under cooperative R&D Agreement between the Westinghouse Science & Technology Center and the Argonne National Laboratory, Contract No. 85232, arranged through U.S. Department of Energy's Superconductivity Pilot Center at ANL, under Contract W-31-109-ENG-38.,",

year = "1991",

month = mar,

doi = "10.1109/20.133559",

language = "English (US)",

volume = "27",

pages = "1861--1865",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "2",

}

TY - JOUR

T1 - Design and testing of a high temperature superconducting current lead

AU - Wu, J. L.

AU - Dederer, J. T.

AU - Eckels, P. W.

AU - Singh, S. K.

AU - Hull, J. R.

AU - Poeppel, R. B.

AU - Youngdahl, C. A.

AU - Singh, J. P.

AU - Lanagan, M. T.

AU - Balachandran, U.

N1 - Funding Information: The authors are grateful to the Westinghouse Electric Corporation and Argonne National Laboratory for permission to publish this paper. This work is performed under cooperative R&D Agreement between the Westinghouse Science & Technology Center and the Argonne National Laboratory, Contract No. 85232, arranged through U.S. Department of Energy's Superconductivity Pilot Center at ANL, under Contract W-31-109-ENG-38.,

PY - 1991/3

Y1 - 1991/3

N2 - The high critical temperature and low thermal conductivity of the ceramic superconductor Y-Ba-Cu-O were utilized to reduce the Joule heating and the heat leak in a vapor-cooled current lead design of nominally l-kA capacity. The lead consists of a lower superconducting part and an upper normal metal (copper) part. The superconducting part is an assembly of twenty rectangular bars fabricated from a composite of Y-Ba-Cu-O and Ag (15% vol.) This part is designed to operate below the critical temperature of the ceramic superconductor. The copper part, consisting of twenty copper wires, extends outside of the cryostat and interfaces to the room temperature power supply. The lead was successfully tested in a liquid helium cryostat for currents up to 2 kA. At the optimum operating currents of 1.7 - 1.8 kA, the helium boil-off measurements show a heat leak reduction of approximately 40% from the conventional designs. Details of the design, fabrication issues, and the testing are presented.

AB - The high critical temperature and low thermal conductivity of the ceramic superconductor Y-Ba-Cu-O were utilized to reduce the Joule heating and the heat leak in a vapor-cooled current lead design of nominally l-kA capacity. The lead consists of a lower superconducting part and an upper normal metal (copper) part. The superconducting part is an assembly of twenty rectangular bars fabricated from a composite of Y-Ba-Cu-O and Ag (15% vol.) This part is designed to operate below the critical temperature of the ceramic superconductor. The copper part, consisting of twenty copper wires, extends outside of the cryostat and interfaces to the room temperature power supply. The lead was successfully tested in a liquid helium cryostat for currents up to 2 kA. At the optimum operating currents of 1.7 - 1.8 kA, the helium boil-off measurements show a heat leak reduction of approximately 40% from the conventional designs. Details of the design, fabrication issues, and the testing are presented.

UR - http://www.scopus.com/inward/record.url?scp=0026124376&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0026124376&partnerID=8YFLogxK

U2 - 10.1109/20.133559

DO - 10.1109/20.133559

M3 - Article

AN - SCOPUS:0026124376

SN - 0018-9464

VL - 27

SP - 1861

EP - 1865

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 2

ER -

Design and testing of a high temperature superconducting current lead

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this