skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

Abstract

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.

Inventors:
 [1]
  1. Livermore, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
868667
Patent Number(s):
5187859
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
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; /29/

Citation Formats

Heim, Joseph R. Method of preloading superconducting coils by using materials with different thermal expansion coefficients. United States: N. p., 1993. Web.
Heim, Joseph R. Method of preloading superconducting coils by using materials with different thermal expansion coefficients. United States.
Heim, Joseph R. Fri . "Method of preloading superconducting coils by using materials with different thermal expansion coefficients". United States. https://www.osti.gov/servlets/purl/868667.
@article{osti_868667,
title = {Method of preloading superconducting coils by using materials with different thermal expansion coefficients},
author = {Heim, Joseph R},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {1}
}

Patent:

Save / Share: