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Nexans

Nexans Superconductors Gmbh

Cambridge Enterprise Limited

Aventis Research & Technologies Gmbh & Co Kg

Varian Medical Systems Particle Therapy Gmbh

Aventis Research & Technologies

Nexans Superductors Gmbh

Joachim Bock

Eberhard Preisler

Steffen Elschner

Frank Breuer

Johannes Holzem

Christoph Lang

Heribert Walter

Marc Neubacher

Stephan Gauss

Guenter Brommer

Werner Horst

Helga Weis

Michael Baecker

Mark O Rikel

Dirk Isfort

Herbert Carl Freyhardt

Iris Kullmer

Markus Grom

Martin Ullrich

Andreas Leenders

Friedrich-Wilhelm Dorn

Martin Schwarz

Jürgen Ehrenberg

Robert Dommerque

Arno Godeke

Andre Wolf

Sergej Bemert

Judith Louise Driscoll

Helmut Dersch

Angelika Abeln

Preisler Eberhard

Judith Driscoll

Michael B&auml;cker

Jurgen Ehrenberg

Ahmed Kursumovic

Juergen Ehrenberg

J&uuml;rgen Neumann

Werner Kohler

G&uuml;nther Riedel

An isochronous cyclotron including one or more coils and a plurality of pairs of bulk superconductor sectors. The one or more coils can be configured to generate a magnetic field in the beam chamber having a magnetic flux density that increases radially from the central axis of the beam chamber, and is orientated substantially perpendicular to the median acceleration plane of the beam chamber. Each pair of bulk superconductor sectors can be disposed on opposite sides of the median acceleration plane. The plurality of pairs of bulk superconductor sectors can be configured to guide or concentrate the magnetic field to provide an axial focusing component of the magnetic field.

Isochronous cyclotrons employing magnetic field concentrating or guiding sectors

A premixed powdery precursor composition suitable as precursor material for obtaining a coating solution for the preparation of, for instance, thin film superconductors based on YBCO 1:2:3 via a coating technique, wherein the powdery precursor composition comprises a mixture of suitable salts of the constituent elements, in particular salts of trifluoroacetate and acetate.

Precursor composition for YBCO-based superconductors

A precursor material for the preparation of superconductors based on Bi2Sr2Ca1Cu2O8+&#x3b4; wherein the precursor material which is as close to equilibrium state as possible, i.e., has less than 5% in average 2201 intergrowths in the 2212 phase; in particular, the present invention relates to a precursor material, which is converted to the final conductor by partial melt processing, as well as to a process for the production of the precursor material and the use of the precursor material for preparing superconductors based on Bi2Sr2Ca1Cu2O8+&#x3b4;.

Precursor material for bi-based oxide superconductor and process for preparing such material

A coated conductor comprising an improved buffer layer architecture where the buffer layers are obtainable by chemical solution deposition and where the buffer layers essentially adopt the degree of texture of the substrate.

Coated conductor with improved grain orientation

A coated conductor with simplified layer architecture includes a biaxial textured substrate, a template buffer layer composed of a material having the general formula REBOwith RE being at least one lanthanoid metal, B being at least one metal selected from Zr and Hf and &#x2212;0.4&#x2266;x&#x2266;+0.7, where the superconductor layer is obtainable by hybrid liquid phase epitaxy and can be deposited directly onto the template buffer layer.

Coated conductor with simplified layer architecture

Electric fault current limiter has superconducting elements inside a cryogenic vessel and bushings for connecting an external circuit. The electric fault current limiter () includes a cryogenic vessel () and superconducting assemblies () including high temperature type superconducting elements (HTSC) immersed in a liquid coolant () such as liquefied nitrogen. Bushings () with conductors () are associated with a main body () of the vessel () such that the conductors () extend horizontally from a surrounding space into an ullage space () situated between a level () of the liquid coolant () inside the vessel () and a cover (). The arrangement of the bushings () according to the invention allows for removing the cover () without dismantling electrical connections between the current limiter () and a circuit to be protected as is necessary with prior art limiters.

Electric fault current limiter having superconducting elements inside a cryogenic vessel and bushings for connecting an external circuit

The present invention relates to a quench controlled high temperature superconductor component wherein at least one depression is provided in a surface of the component resulting in a reduced wall thickness, and, wherein an electrical shunt is applied into the depression.

Quench-controlled high temperature superconductor

The present invention is directed to a superconducting current limiting component, particularly to a ceramic high temperature superconducting current limiting component which is self triggering, comprising a coil () made of ceramic high temperature superconductor material, wherein around the outer surface of the coil () made of ceramic high temperature superconductor material a second coil () is applied as a shunt and, preferably, wherein the coil () made of ceramic high temperature superconductor material is applied onto a hollow cylindrical body () made of a ceramic high temperature superconductor material.

Compact superconducting current limiting component in coil configuration with low inductance

A resistive current limiter with at least one tubular high temperature superconductor body is disclosed provided with a shunt of a normal conducting material wound in coil configuration around the surface of the tubular superconductor body.

Superconducting resistive current limiter with a shunt

The present invention is directed to a cylindrically shaped superconductor component particularly useful as resistive current limiter composed of a cylindrical superconductor body, in particular of high temperature superconductor material, provided vertically to its longitudinal axis with a number of azimuthal slots, incised in parallel and alternating, and one longitudinal slotrunning parallel to the longitudinal axis over almost the whole length of the cylindrical superconductor body.

Cylindrically shaped superconductor component and its use as resistive current limiter

The invention relates to a process for applying a resistive layer on an oxide superconducting element for electrically decoupling superconducting filaments contained in the element, an oxide superconducting element having a resistive layer and use thereof, in particular in ac applications, the resistive layer being formed by chemically converting the surface of a conducting metal coating sheating the superconducting core of said filaments into a salt of a metal constituting said conducting coating.

Metal salt resistive layer on an superconducting element

The present invention relates to a superconducting current limiting device comprising a superconductor component () wherein each superconductor component () comprises a superconductor body () on which a coil () is wound the coil being electrically connected to the superconductor body () wherein in the superconducting current limiting device a magnetic field is generated on transition of the superconductor from the superconducting state to the normal conducting state.

Superconducting current limiting device with magnetic field assisted quenching

The invention relates to a high-temperature superconductor component with a particular cross-sectional area, which has a current-carrying section, the current-carrying section being in contact with a safety conductor in such a way that the critical current flowing on transition of the superconductor to normal conduction can be taken up without damage by the safety conductor in at least 1 second and rerouted, as well as a process for its production.

Protected superconductor component and process for its production

The invention relates to a method for coating shaped bodies made of a superconducting material based on (Y/SE)BaCuO. The invention is characterized in that a coating consisting of a coating material is applied to at least one part of a surface of the shaped body, whereby the coating material at least partially melts at a lower temperature than that of the material of the shaped body and/or is flowable at a lower temperature than that of said material. The shaped body with the applied coating material is heated to a temperature at which the material of the shaped body does not yet melt and/or is not yet flowable, however at which the coating material is at least partially melted thereon and/or is in a flowable state. In addition, at least one part of the area of the shaped body located near the surface is modified at said temperature and/or during a successive cooling, and the shaped body treated in such a manner is enriched with oxygen during cooling and/or during a successive heat treatment, whereby the modification contributes to the increase in remanent induction and/or to the critical current density of the shaped body enriched with oxygen. The invention also relates to a shaped body made of a superconducting material which is based on (Y/SE)BaCuO and which can be obtained by using the above-mentioned method. Said superconducting material contains at least one rare-earth element selected from the group of Y, La, Ce, Pr, Nd, Eu, Gd, Tb, Dy, Ho, Er Tm, Yb and Lu and comprises a maximal value of remenant induction of at least 1100 mT at 77K and O T.

Method for coating a semiconductor material using high remanent induction, coated superconductor material and the use thereof

According to the inventive method for producing a superconductive coil, a shaped body consisting of a material which is superconductive or which becomes superconductive upon subsequent heat treatment is coated with reinforcement agents and is given the geometric shape of the future coil. The invention also relates to a superconductive coil produced according to this method. Said inventive superconductive coil has low alternating current loss and consists of a highly textured superconductive material, and is oriented in such a way that the platelet levels are directly considerably in the direction of the course of the coil. The coil is formed from a superconductive solid part.

Process for the production of a coil made of a high temperature superconductor material, and a high-temperature superconducting coils having low AC loss

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Erftstadt, Germany

Joachim Bock