Method of preloading superconducting coils by using materials with different thermal expansion coefficients

Patent · Fri Jan 01 00:00:00 EST 1993

OSTI ID:868667

Heim, Joseph R ^[1]

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1. Livermore, CA

The invention provides a high magnetic field coil. The invention provides a preloaded compressive force to the coil maintain the integrity of the coil. The compressive force is obtained by reinforcing the coil with two materials of different thermal expansion rates and then heating the coil to 700.degree. C. to obtain the desired compression. The embodiment of the invention uses Nb.sub.3 Sn as the conducting wire, since Nb.sub.3 Sn must be heated to 700.degree. C. to cause a reaction which makes Nb.sub.3 Sn superconducting.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5187859
• OSTI ID: 868667
• Country of Publication: United States
• Language: English

Related Subjects

method
preloading
superconducting
coils
materials
thermal
expansion
coefficients
provides
magnetic
field
coil
preloaded
compressive
force
maintain
integrity
obtained
reinforcing
rates
heating
700
degree
obtain
desired
compression
embodiment
nb
conducting
wire
heated
reaction
makes
superconducting coils
compressive force
expansion coefficient
superconducting coil
thermal expansion
magnetic field
field coil
conducting coils
expansion coefficients
conducting wire
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