Electrical resistance of superconducting cable splices [electronic resource].

Published: Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 1997.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description: 10 pages : digital, PDF file
Additional Creators: Fermi National Accelerator Laboratory, United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information

Access Online

www.osti.gov

Availability

Finding items...

Restrictions on Access

Free-to-read Unrestricted online access

Summary

The electrical resistance of superconducting cable splices is known to be in the 10⁻⁹ Ω range which to be measured conventionally would require the use of a micro voltmeter with a power supply capable of generating kilo Amperes plus a liquid helium cryostat with large power leads. Here we present a system for carrying on such measurements that requires besides the microvoltmeter a power supply capable of generating only up to 35 Α and a 152 mm diameter neck helium dewar using less than 25 liters per day after initial cool down. In this paper we describe the apparatus and present the data taken with it in its first use which for data acquisition used just a chart recorder. The method is based in making the splice in a loop of cable, inducing a current in it and measuring its decay time constant. Generating high currents in superconductors by induction is not a new technique but the use of the decay constant of currents generated this way for the determination of minute electrical resistance seems novel to the author. Unexpected details in the results will be discussed.

Report Numbers

E 1.99:fnal/c--97/264
E 1.99: conf-970758--
conf-970758--
fnal/c--97/264

Subject(s)

Other Subject(s)

Note

Published through SciTech Connect.
07/01/1997.
"fnal/c--97/264"
" conf-970758--"
"DE98052978"
Joint cryogenic engineering conference and international cryogenic materials conference, Portland, OR (United States), 27 Jul - 1 Aug 1997.
Kuchnir, M.

Funding Information

AC02-76CH03000

View MARC record | catkey: 14689288