DocumentCode :
1196285
Title :
Advanced strand design for precision DC-field and ramp-field magnets
Author :
Collings, E.W. ; Sumption, M.D.
Author_Institution :
Battelle Memorial Inst., Columbus, OH, USA
Volume :
28
Issue :
1
fYear :
1992
fDate :
1/1/1992 12:00:00 AM
Firstpage :
156
Lastpage :
159
Abstract :
The use of the solid-solution alloy Cu-Mn as an interfilamentary matrix to eliminate proximity effect coupling in multifilamentary strands is discussed. Eddy current measurements indicate that the presence of Mn does little to increase the transverse resistivity of a fine-filament composite, which is controlled primarily by interfilamentary size effect. The introduction of Ni into the strand, either as a replacement filament or an electroplated coating, can compensate for superconductor magnetization and assist in eliminating axial-field distortions in magnets wound from that strand
Keywords :
composite superconductors; copper alloys; eddy current losses; magnetic hysteresis; manganese alloys; niobium alloys; size effect; superconducting magnets; titanium alloys; type II superconductors; AC losses; CuMn solid solution alloy; NbTi; NbTi-CuMn; advanced strand design; axial-field distortions; eddy current; electroplated coating; fine-filament composite; hysteresis loops; interfilamentary matrix; interfilamentary size effect; precision DC field magnets; proximity effect coupling; ramp-field magnets; superconductor magnetization; transverse resistivity; Coatings; Conductivity; Current measurement; Eddy currents; Multifilamentary superconductors; Proximity effect; Size control; Size measurement; Superconducting filaments and wires; Superconducting magnets;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/20.119833
Filename :
119833
Link To Document :
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