Title :
Conceptual design of a 20-kA current lead using forced-flow cooling and Ag-alloy-sheathed Bi-2223 high-temperature superconductors
Author :
Heller, R. ; Hull, J.R.
Author_Institution :
Kernforschungszentrum Karlsruhe, Germany
fDate :
6/1/1995 12:00:00 AM
Abstract :
High-temperature superconductors (HTSs) consisting of Bi-2223 HTS tapes sheathed with Ag alloys are proposed for a 20-kA current lead for the planned stellarator WENDELSTEIN 7-X. Forced-flow He cooling is used, and 4-K He cooling of the whole lead, as well as 60-K He cooling of the copper part of the lead, is discussed. Power consumption and behavior in the event of loss of He flow are given.<>
Keywords :
bismuth compounds; cooling; high-temperature superconductors; liquid helium; power consumption; refrigeration; stellarators; strontium compounds; superconducting cables; superconducting tapes; 20 kA; 4 K; 60 K; Ag-alloy-sheath; Bi-2223 high-temperature superconductors; BiSrCaCuO 2223 phase; He; He cooling; WENDELSTEIN 7-X; current lead; forced-flow cooling; power consumption; stellarator; Assembly; Clamps; Conductors; Cooling; Copper; Electric resistance; Gold; High temperature superconductors; Lead;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
