Article

Proofing tests of a fiber-reinforced type of niobium-tin superconductor by small coil experiments

IEEE Transactions on Appiled Superconductivity (impact factor: 1.04). 04/2001; DOI:10.1109/77.920324 pp.2316 - 2319
Source: IEEE Xplore

ABSTRACT We have been developing fiber-reinforced type of niobium-tin
superconductor for a large-scale high field magnet. This conductor has a
niobium-tin filament reinforced by a tantalum core of about
20-micrometer diameter. Tantalum is selected as a reinforcing material
since it has good ductility with mechanical strength comparable to
stainless steel. We have tested this conductor in the form of a small
solenoid with the diameter of 50 mm under a backup magnetic field of 15
Tesla. Results of the test showed that it has a uniform superconducting
property over a length of 250 meter. Furthermore, we developed another
conductor with larger current carrying capacity and tested this
conductor in the coil form. Strain measurement of the second coil
revealed that the windings behave elastically within the range of
operation

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Keywords

backup magnetic field
 
coil form
 
conductor
 
elastically
 
fiber-reinforced type
 
mechanical strength comparable
 
niobium-tin filament
 
reinforcing material
 
second coil
 
stainless steel
 
Strain measurement
 
Tantalum
 
tantalum core
 

H Tateishi