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Superconducting dipole electromagnet

  • US 4,038,622 A
  • Filed: 04/13/1976
  • Issued: 07/26/1977
  • Est. Priority Date: 04/13/1976
  • Status: Expired due to Term
First Claim
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1. A superconducting dipole electromagnet wound of wires formed by a filament of superconducting material embedded in a normal conductor that is enclosed in an electrically insulating material, the electromagnet exhibiting cylindrical symmetry about an axis, the electromagnet comprising:

  • a. a central portion of said wires disposed substantially parallel to each other and to the axis of cylindrical symmetry, the wires in said central portion disposed in two crescent-shaped cross-sections defined by non-intersecting portions of two equal circles having centers on a line through the axis and perpendicular to the axis, the centers equidistant from the axis, the wires in one of said two crescent-shaped cross-sections disposed to carry electric current in a first direction parallel to the axis and the wires in the other of said two crescent-shaped cross-sections carrying electric current in an opposite direction;

    b. a first terminating portion of said wires connected electrically to the central portion at a first end to form a plurality of looping portions, each of said looping portions connecting wires from one of said crescent-shaped cross-sections to wires in the other of said crescent-shaped portions and continuing an electric circuit therethrough, the fractional number of wires in each of said looping portions equalling the reciprocal of the number of said plurality, further unlooped portions of said wires disposed in cross-sections bounded by arcs of two bounding circles equal in size to said two equal circles, the centers of the bounding circles moving into coincidence upon approaching an end of the magnet; and

    c. a second terminating portion of said wires connected to the central portion at a second end opposite to said first end and exhibiting mirrored symmetry to said first terminating portion, the second terminating portion carrying electric current connected to continue an electric circuit from wires in one of said crescent-shaped cross-sections to wires in the other, whereby the second terminating portion forms with the first terminating portion and the central portion a continuous current-carrying dipole electromagnet.

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