Title :
Stability measurements on a 1-T high temperature superconducting magnet
Author :
Lue, J.W. ; Dresner, L. ; Schwenterly, S.W. ; Aized, D. ; Campbell, J.M. ; Schwall, R.E.
Author_Institution :
Oak Ridge Nat. Lab., TN, USA
fDate :
6/1/1995 12:00:00 AM
Abstract :
A high temperature superconducting magnet based on Bi-2223 conductor was built at the American Superconductor Corporation. The magnet was constructed by a react and wind technique using conductors made from a metallic precursor process. It has a winding ID of 25.4 mm, OD of 87.6 mm, and height of 107.3 mm. A heater, two thermometers, and several voltage taps were built into the high field region of the magnet for stability measurements. The magnet generates 1.1 T central field at 4.2 K when operating at 1 /spl mu/V/cm over the entire conductor length, including all the joints. Stability measurements were performed in background fields up to 2.5 T from 4.2 K to 77 K. Stability margins more than 2 orders of magnitude higher than a low temperature superconductor were observed.<>
Keywords :
bismuth compounds; electron device manufacture; high-temperature superconductors; stability; strontium compounds; superconducting device testing; superconducting magnets; 1.1 T; 107.3 mm; 2.5 T; 25.4 mm; 4.2 to 77 K; 87.6 mm; American Superconductor Corporation; Bi-2223 conductor; BiSrCaCuO; BiSrCaCuO 2223 phase; high temperature superconducting magnet; metallic precursor process; react and wind technique; stability measurements; thermometers; voltage taps; Conducting materials; Conductors; High temperature superconductors; Instruments; Laboratories; Magnetic field measurement; Stability; Superconducting coils; Superconducting magnets; Voltage;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
