Abstract: A device for the high pressure densification of superconducting wire from compacted superconductor material or superconductor precursor powder particles, has four hard metal anvils (5, 6, 7, 8) with a total length (L2) parallel to the superconducting wire, the hard metal anvils borne in external independent pressure blocks (9, 10, 11), 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 (6) having clearances of at least 0.01 mm up to 0.2 mm towards the neighboring hard metal anvils (5, 8), so that no wall friction occurs between the free moving anvil and the neighboring anvils. This allows for high critical current densities Jc at reduced pressure applied to the hard metal anvils.

Abstract: A method for producing a Sn based alloy (15) 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 Nb3Sn superconductor material with a superior current carrying capacity.

Abstract: A device for the high pressure densification of superconducting wire from compacted superconductor material or superconductor precursor powder particles, has four hard metal anvils (5, 6, 7, 8) with a total length (L2) parallel to the superconducting wire, the hard metal anvils borne in external independent pressure blocks (9, 10, 11), 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 (6) having clearances of at least 0.01 mm up to 0.2 mm towards the neighboring hard metal anvils (5, 8), so that no wall friction occurs between the free moving anvil and the neighboring anvils. This allows for high critical current densities Jc at reduced pressure applied to the hard metal anvils.

Abstract: A hollow tube (1), for inserting superconductor precursor material such as superconductor precursor rods (13) into its bore (3), wherein the tube (1) extends along an axial direction, and wherein the tube (1) comprises a matrix (4) made of a first ductile material, is characterized in that a plurality of continuous filaments (5), extending along the axial direction of the tube (1), are distributed in the matrix (4), wherein the continuous filaments (5) are made of a second ductile material. With the invention, a good quality mechanical reinforcement of superconductor wires, in particular which can be used without later hot extrusion, can be achieved.

Abstract: A method for producing a Sn based alloy (15) 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 Nb3Sn superconductor material with a superior current carrying capacity.