Gec Alsthom Electromecanique S.a.

Alsthom Intermagnetics Sa

Philippe Sulten

Christian Eric Bruzek

Gia K Hoang

Giaky Hoang

Francois Peltier

Gerard Grunblatt

The invention concerns a method of making a superconductor so that it includes, in cross-section: a central area, made up of a plurality of superconductor filaments of the NbTi, NbTiTa type or of any other alloy or substance based on Nb; a concentric, two part, outer ring surrounding the central area; and a concentric resistive barrier. In accordance with the invention, the concentric resistive barrier is integrated into the concentric outer ring.

Method of manufacturing a multifilament superconductor with resistive

A method of assembling composite billets of circular section for manufacturing multifilament superconducting strands, in which a cylindrical body is initially filled with jig bars having at least one axis of symmetry of order n stacked inside the cylindrical body. As the jig bars are removed, one by one, each jig bar is replaced by a multi-part bar made up of unit rods stacked in ordered and compact manner to occupy minimum space. Each multi-part bar has the same section as the jig bar that it replaces. The jig bars are preferably rectangular, and more preferably square in section, and the multi-part bars that replace them are made up of unit rods that are rectangular and preferably square in section. The method facilitates and speed up assembly.

Method of assembling composite billets for manufacturing multifilament

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Evette-Salbert, France

Philippe Sulten