Bruker Biospin Ag

Florin Buta

René Flükiger

Carmine Senatore

A device for the high pressure densification of superconducting wire from compacted superconductor material or superconductor precursor powder particles, has four hard metal anvils () with a total length (L2) parallel to the superconducting wire, the hard metal anvils borne in external independent pressure blocks (), which are in turn either fixed or connected to high pressure devices, preferably hydraulic presses. At least one of the hard metal anvils is a free moving anvil () having clearances of at least 0.01 mm up to 0.2 mm towards the neighboring hard metal anvils (), so that no wall friction occurs between the free moving anvil and the neighboring anvils. This allows for high critical current densities Jat reduced pressure applied to the hard metal anvils.

Device and method for the densification of filaments in a long superconductive wire

A method for producing a Sn based alloy () comprising a metal matrix of a metal matrix material, wherein the metal matrix material comprises Sn, and inclusions of a compound material, further referred to as compound inclusions, wherein the compound material contains one element or a combination of elements of the group Ti, V, Zr, Hf, further referred to as dopant, and one or a plurality of other elements, in particular Sn, Cu and/or Nb. Particles of the metal matrix material, further referred to as matrix particles, are mixed with particles of the compound material, further referred to as compound particles, and the matrix particles and the compound particles are compacted during and/or after their mixing. A Sn based alloy containing finer compound inclusion of a dopant can be prepared, in order to produce NbSn superconductor material with a superior current carrying capacity.

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Les Acacias, Switzerland

Florin Buta