Survey of superconductive magnets considers - stabilization problems, advances in materials and their uses, and design evolution. Uses of superconducting magnets in particle accelerators and bubble chambers, as well as possible applications in magnetohydrodynamic and thermonuclear power generation and levitation are discussed

Laurence, J. C.

English

NASA Technical Reports Server

December 1970
	
.
	 Brief 70-10678 
NASA TECH BRIEF 
NASA Tech Briefs announce new technology derived from the U.S. space program. They are issued to encourage commercial 
application. Tech Briefs are available on a subscription basis from the National Technical Information Service, Springfield, 
Virginia 22151. Requests for individual copies or questions relating to the Tech Brief progam may be directed to the Tech-
nology Utilization Division, NASA, Code UT, Washington, D.C. 20546. 
Development of Superconductive Magnets 
The paper submitted is a brief discourse on the de-
velopment of superconductive magnets. The following 
topics are included: 1) Problems encountered, particu-
larly in stabilization, 2) Progress made toward solution 
of problems encountered, 3) Advances in materials 
and their uses; for instance, niobium stannide, 
niobium zirconium, and niobium titanium conductors, 
4) Evolution in design during the past decade. Descrip-
tions of particular magnets that illustrate the progress 
made are included. 
Field strengths have increased from 1.5 tesla to 15.0 
tesla, and bore sizes from a fraction of a centimeter to 
about 5 meters. Present research problems noted are: 
low current density in the windings compared to the 
current density in the conductors; and large size and 
weight of the magnets. 
Superconductive magnets will be needed for magneto-
hydrodynamic and thermonuclear power generation
when these become realities. Such magnets are already 
being used in atomic particle accelerators as bending 
and focusing magnets, and in bubble chambers. The 
use of magnets for levitation, for items ranging from 
trains to plasma physics devices, is being studied. 
Note: 
Requests for further information may be directed to: 
Technology Utilization Officer 
Lewis Research Center
	 - 
21000 Brookpark Road 
Cleveland, Ohio 44135 
Reference: TSP70- 10678 
Patent status: 
No patent action is contemplated by NASA. 
Source: J. C. Laurence 
Lewis Research Center 
(LEW-1 1170) 
Category 03 
This document was prepared under the sponsorship of the National 
Aeronautics and Space Administration. Neither the United States 
Government nor any person acting on behalf of the United States
Government assumes any liability resulting from the use of the 
information contained in this document, or warrants that such use 
will be free from privately owned rights.
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Development of superconductive magnets

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