Abstract: Superconductor cable having a plurality of flat, tape-shaped ribbon superconductor wires assembled to form a stack having a rectangular cross section, the stack having a twist about a longitudinal axis of the stack. Multiple superconductor cables including twisted stacked-cables of the flat-tape-shaped superconductor wires, and power cable comprising the twisted flat-tape stacked cables are disclosed. Superconducting power cable disposed within and separated from an electrical insulator with a space passing cryo-coolant between the superconducting cable and insulator is also disclosed.

Abstract: A superconducting magnet includes a superconducting wire including magnesium diboride; a superconducting coil where a part of the superconducting wire is wound; and a joint where an end of the superconducting wire and an end of another superconducting wire are connected and united. The joint includes a sintered body including magnesium diboride, an averaged particle diameter of magnesium diboride at the joint of the superconducting wire is greater than an averaged particle diameter of the magnesium diboride at the part where the superconducting wire is wound.

Abstract: A method for connecting two or more superconducting wires (1, 2), each comprising at least one filament (3a-3b) that contains MgB2, wherein the superconducting connection is realized through exposed end regions (13) of the filaments (3a-3d) via a superconducting matrix, is characterized in that a bulk powder (4) of a high-temperature superconductor (HTS) powder with a transition temperature of Tc>40K is provided, into which the exposed end regions (13) of the filaments (3a-3d) project, wherein the Boron of the Boron powder of the bulk powder (4) is in amorphous modification, and the bulk powder (4) is compacted together with the projecting exposed end regions (13) of the filaments (3a-3d) to form a compressed element (8). The method improves the quality, in particular, the current carrying capacity and the critical magnetic field strength of a superconducting connection of two MgB2 wires.

Abstract: A superconducting coil and a rotating device, the performances of which are improved, and a superconducting coil manufacturing method are provided. A superconducting coil 10 is a saddle-shaped superconducting coil formed by winding a superconducting wire so as to form a race-track-like shape. The superconducting coil includes a curved portion 10b and a straight portion 10a connected to the curved portion 10b. In the curved portion 10b, an upper edge 10c is positioned closer to an inner peripheral side than a lower edge 10d is, and in the straight portion 10a, the upper edge 10c is positioned closer to an outer peripheral side than the lower edge 10d is.

Abstract: A magnet coil configuration (20-24) is manufactured from a band-shaped conductor (1), which is slit in the longitudinal direction except for its two end areas (2, 3) such that the band-shaped conductor (1) has a first and a second half band (4, 5) and two end areas (2, 3) which connect these two half bands (4, 5) to form a closed loop. The two half-bands (4,5) of the slit band-shaped conductor (1) are initially wound onto two separate intermediate coils (14,15) and the final coil structure is subsequently wound by alternate extraction of the two half-bands (4,5) from the intermediate coils (14,15). A simple method is thereby proposed for winding a slit band-shaped conductor to form a magnet coil configuration which also generates strong magnetic fields.

Abstract: Provided is a superconducting joining method of first generation superconducting wire, including: removing normal conductor parts from joining portions of first generation superconducting wires to be joined to each other, thereby exposing superconducting filaments; after inserting a superconductor powder into the joining portions, bring the superconducting filaments of the first generation superconducting wires to be joined to each other into contact with each other, and applying a pressure thereon; and causing the first generation superconducting wires that are brought into contact with each other to be subjected to melting diffusion and joined to each other, thereby minimizing a reduction in critical current and joining resistance.

Abstract: An oxide superconductor film formed on a substrate includes an oxide containing at least one metal M selected from the group consisting of yttrium and lanthanoid metals, provided that cerium, praseodymium, promethium and ruthenium are excluded, and barium and copper, in which the film has an average thickness of 350 nm or more, an average amount of residual carbon of 3×1019 atoms/cc or more, and an amount of residual fluorine in a range of 5×1017 to 1×1019 atoms/cc, and in which, when divided the film into a plurality of regions from a surface of the film or from an interface between the film and the substrate, each region having a thickness of 10 nm, atomic ratios of copper, fluorine, oxygen and carbon between two adjacent regions are in a range of ? times to 5 times.

Abstract: An Nb3Sn superconductor wire is manufactured by heating a precursor for an Nb3Sn superconductor wire. The precursor includes a Cu tube made of Cu or Cu-alloy, assemblies, each of which includes Nb filaments disposed in the Cu tube, and each of the Nb filaments includes an Nb core made of Nb or Nb-alloy. Each of the assemblies also includes Sn filaments disposed in the Cu tube, and each of the Sn filaments includes a Sn core made of Sn or Sn-alloy. The precursor also includes reinforcing filaments disposed in the Cu tube for dividing the assemblies such that the assemblies are not adjacent to each other. By heating the precursor, Sn in the Sn core is diffused into the Nb core to produce Nb3Sn.

Abstract: An International Organization for Standardization (ISO) shipping container 10 includes a cryogenic refrigeration system 14 for cryogenically cooling superconducting magnet(s) 12A, 12B during transit. The cryogenic refrigeration system 14 monitors the temperature and/or pressure of the superconducting magnet(s) and circulates a refrigerant to the superconducting magnet(s) to maintain cryogenic temperatures in superconducting coils. A power supply 16, provided by a transportation vehicle, connects to the cryogenic refrigeration system via a power inlet 20 which is accessible from the exterior of the shipping container. The superconducting magnet(s) are suspended within the shipping container which is then loaded onto the transportation vehicle. The external power supply is connected to the cryogenic refrigeration system such that refrigerant is circulated to a cold head 22A, 22B of each superconducting magnet.

Abstract: A method for producing a superconductive wire, whereby an elongated intermediate element is formed out of an initial element in a deformation step and whereby the superconductive filaments are formed by a final reaction heat treatment, is characterized in that prior to the final reaction heat treatment the filaments in the intermediate element are densified in one or more high pressure densification steps following up the deformation step, said densification steps comprising a simultaneous action of at least four hard surfaces perpendicular to the axis of the elongated intermediate element, building up high pressure P?100 MPa on a part of the intermediate element having an axial length L. This leads to a substantial increase of the critical current density Jc, whereby the anisotropy factor ? is be almost not affected thus enabling production of almost isotropic wires or tapes.

Abstract: A superconducting cable (1; 10; 30) has a channel (4, 38) for a cooling liquid, a tubular support structure (5, 37), at least two layers (2, 3; 11-15; 31, 32, 35, 36) comprising high Tc conductors (2a, 3a) which comprise a high Tc material, and an insulation (7, 17), in particular a tubular insulation (7). The conductors (3a) of the outer layer (3; 13-15; 33, 36) comprise a first high Tc material that is different from a second high Tc material of the conductors (2a) of the inner layer (2; 11-12; 32, 35), wherein the first high Tc material exhibits lower AC losses as compared the second high Tc material, and that the high Tc conductors (3a) of the outer layer (3; 13-15; 33, 36) comprise normal-conducting interruptions (41, 42, 43). The superconducting cable exhibits reduced AC losses.

Abstract: Disclosed herein is a superconducting strip having a metal coating layer and a method of manufacturing the superconducting strip.

Abstract: A method for producing a thick film includes disposing a precursor solution onto a substrate to form a precursor film. The precursor solution contains precursor components to a rare-earth/alkaline-earth-metal/transition-metal oxide including a salt of a rare earth element, a salt of an alkaline earth metal, and a salt of a transition metal in one or more solvents, wherein at least one of the salts is a fluoride-containing salt, and wherein the ratio of the transition metal to the alkaline earth metal is greater than 1.5. The precursor solution is treated to form a rare earth-alkaline earth-metal transition metal oxide superconductor film having a thickness greater than 0.8 ?m. precursor solution.

Abstract: Provided is a method of manufacturing a superconducting accelerator cavity in which a plurality of half cells having opening portions (equator portions and iris portions) at both ends thereof in an axial direction are placed one after another in the axial direction, contact portions where the corresponding opening portions come into contact with each other are joined by welding, and thus, a superconducting accelerator cavity is manufactured, the half cells to be joined are arranged so that the axial direction thereof extends in a vertical direction; and concave portions that are concave towards an outer side are also formed at inner circumferential surfaces located below the contact portions of the half cells positioned at a bottom; and the contact portions are joined from outside by penetration welding.

Abstract: A low resistance superconducting joint with high shielding characteristics, manufactured by: corroding copper on the outer surface at the end of a NbTi/Cu superconducting wire to form terminal NbTi superconducting filaments; inserting same number of NbTi superconducting filaments into each through hole of the niobium layer of a Nb/NbTi/Cu multilayer composite rod; pressing at the outside of the Nb/NbTi/Cu multilayer composite rod to combine the Nb/NbTi/Cu multilayer composite rod and NbTi superconducting filaments together to form a joint; and inserting the joint into a YBCO tube, and then filling the YBCO tube with molten bismuth-lead-tin-cadmium (BiPbSnCd) alloy solder to form a superconducting joint with high shielding and low resistance characteristics.

Abstract: The method of winding superconducting wire comprises a winding method comprising: winding the superconducting wire from the source reel onto the first lane of the first bobbin a first number of times in a first direction; fixing the first bobbin and the second bobbin to each other; winding the superconducting wire from the source reel onto the third lane of the second bobbin a second number of times in the first direction; separating the first bobbin and the second bobbin from each other; and winding the superconducting wire from the first lane of the first bobbin onto the fourth lane of the second bobbin a third number of times in a second direction which is different from the first direction while winding the superconducting wire from the third lane of the second bobbin onto the source reel the third number of times in the second direction.

Abstract: Provided is a multiple transposition method for superconducting wire, by making each superconducting wire unit from second-generation superconducting wires that were firstly transposed and then transposing each superconducting wire unit in such a manner that the phase of each unit can be changed along the length, comprising preparing wires by making curves on superconducting wires in such a manner that the superconducting wires of a thin multiple layer grown epitaxially are slit in zigzags and then making the curves repeatedly and by machining the wires with a desired length; making first-transposed superconducting wire units by combining a plurality of the prepared wires such that curves of adjacent wires come in touch to each other and are superposed; preparing a superconducting wire unit bundle by arranging the first-transposed superconducting wires units and by locating a plurality of the first-transposed superconducting wire units in parallel along the length; and making a second transposition on the fir

Abstract: A method of forming an encapsulated coupled coil arrangement. The method includes coupling a first lead of a first coil to a second lead of an electrical circuit device, by soldering or infusion, using a superconductive jointing alloy; and encapsulating the first coil, the electrical circuit device and the jointed leads of the first coil and the electrical circuit device in an encapsulation material. The jointing alloy has a melting point higher than a highest temperature experienced by the encapsulation material having the encapsulation process.

Abstract: Disclosed is a three layer process for making contact points to a high transition temperature superconductor (HTSC), particularly to (Bi,Pb)2 Sr2 Ca2 CU3019+x with and without silver in the superconductor. The contact structure is a three layer configuration with a perforated silver foil (3) sandwiched between two metal spray gun deposited silver layers (2,5) and subsequent heat treatment in air. The contact has been made on tubes and rods (1). The silver contacts are capable of carrying a continuous current of 200 Amps without adding any substantial heat load to the cryogen used to cool the HTSC. The contact resistance at 4.2 K is in the range of 1.5×10 (hoch?8) to 8.5? 10 (hoch?8) OHM in zero applied filed.

Abstract: There is obtained a superconductive magnet in which there are reduced the machining costs and the amount of materials for bobbins and supporting members that support coils. In a superconductive magnet provided with a first group of coils serving as main coils for generating a magnetic field and a second group of coils serving as shield coils that are arranged coaxially with the first group of coils and generate a magnetic field whose direction is opposite the direction of a magnetic field generated by the first group of coils so that a magnetic field that leaks outside is cancelled, the second group of coils are arranged at axis-direction positions where axis-direction electromagnetic force generated by the first group of coils and exerted on the second group of coils and axis-direction electromagnetic force generated by the second group of coils balance with each other and cancel out each other.

Abstract: A method for assembling a superconducting bearing, wherein the superconducting bearing has a first bearing ring including a first body made of a type-2 superconducting material and a second bearing ring including a second body made of a type-2 superconducting material, the method including the following steps: assembling the first bearing ring and the second bearing ring; and, applying an external magnetic field, which permeates both bodies to the first body and to the second body.

Abstract: A method of manufacturing a superconducting wire includes the step of drawing a wire formed by coating raw material powder for a superconductor with a metal (S6), the step of first rolling (S8) rolling a multifilamentary wire after the step of drawing (S6), and the step of first sintering (S10) sintering the multifilamentary wire 1 after the step of the first rolling (S8). At least one of an interval between the step of drawing (S6) and the step of the first rolling (S8) and an interval between the step of the first rolling (S8) and the step of the first sintering (S10) is less than seven days. With this method, a superconducting wire having high and uniform performance can be obtained.

Abstract: A superconducting wire having at least a superconducting thin film and a stabilizing film formed one on top of another in order on a substrate having a predetermined width and a predetermined length, the superconducting wire having at least one cut made along a direction of the length of the superconducting wire, the superconducting wire being bendable at the cut in a width direction.

Abstract: A twisted track interferometer (TTI) for producing magic states is disclosed. The spin of ½-vortices may be exploited to produce magic states. The disclosed “twisted track interferometer” is a “topological twist” on the conventional Pabre-Pero interferometer adapted to topological superconductors. In the disclosed TTI, the probe particles may be Josephson vortices (JVs). JVs are estimated to be light and will tunnel more easily than Abrikosov vortices. Also, the disclosed TTI does not require multiple tunneling events. Rather, the JVs are propelled down thin insulating tracks within a 2D topological p-wave superconductor by a Magnus force generated by a tunneling supercurrent across the tracks. The JVs encounter tunneling junctions as they pass into the arms of the TTI.

Abstract: A superconductive electric cable is provided in which a cable core is arranged in a cryostat, where the cable core is composed of three phase conductors arranged concentrically around an inner cooling duct, with an electric insulation arranged between the phase conductors, and where the cryostat is surrounded by an electric insulation, which is surrounded by a neutral conductor of normally conductive materials. In this cable, a neutral conductor or a screening is arranged only outside of the cryostat, and is formed by normally conductive material which surrounds the cryostat as a common neutral conductor, where an insulating material is arranged between this neutral conductor and the cryostat.

Abstract: The invention provides a flux pump that includes a plurality of superconducting materials arranged to form at least one superconducting loop, at least one of the components being made of a superconductor that includes particles made of a superconductive material and a conductive material selected to be driven to a superconductive state when in proximity to the superconductive material, an unbroken section of the conductive material being located sufficiently close to a plurality of the particles to be driven to a superconductive state by the superconductive material.

Abstract: A superconducting article and method of fabrication are provided. The superconducting article includes a superconducting structure, which includes a superconducting conductor and multiple discrete overlay regions of higher heat capacity than the superconducting conductor. The multiple discrete overlay regions are disposed along a length of the superconducting conductor, in thermal contact with the superconducting conductor, and positioned to define a heat modulation pattern along the length of the superconducting structure. The multiple discrete overlay regions create a temperature distribution favorable to transition of the superconducting structure under load from a normal resistive state to a superconductive state by facilitating formation of a continuous superconducting path along the length of the superconducting structure.

Abstract: A method for manufacturing a high-temperature superconducting conductor includes providing an elongate substrate to a reactor, the reactor having a longitudinal flow distributor. The longitudinal flow distributor has an entrance, a plurality of exits, and an interior distribution member provided between the entrance and the plurality of exits. The method further includes heating at least a portion of the substrate to a temperature sufficient to facilitate the formation of one of a superconducting material and a predecessor to a superconducting material. Further, the method includes flowing at least one precursor into the longitudinal flow distributor, through the entrance thereof, past an internal distribution member, and out through a plurality of exits, thereby longitudinally distributing the at least one precursor to form the superconducting material or predecessor thereof on the substrate.

Abstract: Disclosed is a superconducting wire and a method for manufacturing the same, in which spacer are inserted into each space formed between modules, the spacers being different kinds according to a shape of each space when a restacking billet is manufactured in an internal diffusion method for manufacturing a Nb3Sn superconducting wire. One of a copper spacer and a low tin/copper spacer having a sectional area rate of copper/tin more than 6.0 is arranged between three modules as well as between two modules and a diffusion preventing tube, and a high tin/copper spacer having a sectional area rate of copper/tin less than 0.01˜1.5 or a middle tin/copper spacer having a sectional area rate of copper/tin less than 1.5˜6.0 is arranged between four modules.

Abstract: The superconducting winding (2) is configured such that it has a band-shaped HTS conductor (4) of the Röbel-conductor type, made of band-shaped HTS individual conductors that are transposed among each other. An armoring band (5) is to be wound to the prefabricated HTS conductor (4), the band not being metallurgically connected to the HTS conductor (4) and being subject to a comparatively larger winding tension (WZ2). The armoring band (5) is wound at a winding tension (WZ2) that is at least 1.5 times, preferably at least 3 times as large as the winding tension (WZ1) of the HTS conductor (4).

Abstract: The invention provides a MgB2 superconductive wire which is long and has a high critical current density. The invention provides a manufacturing method of a superconductive wire in which a magnesium or a magnesium alloy is reacted with a magnesium boride expressed by MgBx (x=4, 7, 12) by carrying out a heat treatment. A superconductive wire is characterized by the magnesium boride expressed by the MgBx (x=4, 7, 12) is included in a part.

Abstract: Superconducting cables employ one or more superconducting tapes wound around a former. A compact superconducting cable is configured using a former having a small diameter, e.g., less than 10 millimeters. A flexible superconducting cable is configured with a former made of a flexible material. Superconducting tape conductors are wound around the former, with the superconducting layer in compression on the inside of the wind turns of the wind, to prevent irreversible damage to the superconductor. A layer of solder is on the superconducting tape(s) or solder sheaths are wound between tape conductors in each layer. The one or more solder layers or sheaths are melted to cause the solder to flow within the structure, to bond some or all of the superconducting tape conductors together and form a mechanically strong cable with an enhanced level of electrical connectivity between tapes in the cable.

Abstract: A physical construction of a superconducting multi-core billet is provided together with a method for manufacturing a superconducting multi-core wire to offer reduction of manufacturing time (cost) and low frequency of occurrence of wire break during diameter-reduction drawing. The superconducting multi-core billet by the present invention has such a construction that a plurality of vertical holes are made in a billet 2 of copper or copper alloy of circular cross-section; that the vertical holes are filled with a superconducting material 4 comprised of NbTi; that a copper-volume ratio, which is a ratio of the copper or the copper alloy to NbTi in volume, is not smaller than four; that the plurality of vertical holes are made in the billet so that each of the vertical holes will be arrayed at an equal spacing on each of two inner and outer layers concentric circles.

Abstract: A process applies a polymer to at least one individual conductor of a high-temperature superconductor (HTS) composite in the manner of a Roebel conductor. The at least one individual conductor includes a substrate and a superconducting layer. Particles are applied to the individual conductor. Then, a thermal treatment is performed which results in partial or complete melting of the particles and, after cooling, in a polymer layer on the individual conductor.

Abstract: The present invention provides a high-throughput system for the ex-situ formation of a superconducting thin film, such as rare-earth-barium-copper-oxide (REBCO), atop a continuous length of buffered metal substrate tape by heating a buffered metal substrate tape coated with precursors of REBCO These precursors, when heated and introduced to water vapor within a process chamber, decompose to form a functional superconducting thin film epitaxial to the buffer layer. A chamber such as a metalorganic chemical vapor deposition (MOCVD) reactor having showerhead and substrate heater assemblies designed for the creation of a long and wide deposition zone is well suited for use in the process the system. The chamber could be of cold-wall type where the walls are not heated or could of hot-wall type where the walls are heated.

Abstract: Method for joining wires using low resistivity joints is provided. More specifically, methods of joining one or more wires having superconductive filaments, such as magnesium diboride filaments, are provided. The wires are joined by a low resistivity joint to form wires of a desired length for applications, such in medical imaging applications.

Abstract: A high-temperature superconducting magnetic sensor having a superconducting layer formed on a substrate and a plurality of superconducting quantum interference devices fabricated on the superconducting layer, which includes: a plurality of input coils that are formed on the superconducting layer and connected to or magnetically coupled with each of the plurality of the superconducting quantum interference devices; a pickup coil that is formed on the superconducting layer and connected so as to form a closed loop together with the plurality of the input coils; and a plurality of trimming wires that are formed on the superconducting layer and can be cut off, while making a short-circuit between both ends of each of the plurality of the input coils.

Abstract: A superconducting magnet assembly includes a bobbin comprising a central bore along a longitudinal direction, and a superconducting coil package wound on the bobbin. The superconducting coil package includes a plurality of superconducting coil layers wound on the bobbin, a plurality of supporting member layers, each of the supporting member layers being between a corresponding two adjacent superconducting coil layers, and a thermal conduction layer between two superconducting coil layers or between a superconducting coil layer and an adjacent supporting member layer.

Abstract: Disclosed is an iron-based superconducting wire comprising a tubular material formed mainly from iron, and an iron-based superconductor formed in the tubular material, wherein the iron-based superconductor contains the iron forming the tubular material as a chemical constituent element of the iron-based superconductor.

Abstract: A thin film superconductive wire material (16) and an electro conductive tape (15) are immersed in a solder bath (35) containing a solder, which includes Sn(tin) and Bi (bismuth), to bond the thin film superconductive wire material (16) and the electro conductive tape (15) and a composite superconductive wire material (10) is formed.

Abstract: A method of forming an encapsulated coupled coil arrangement. The method includes coupling a first lead of a first coil to a second lead of an electrical circuit device, by soldering or infusion, using a superconductive jointing alloy; and encapsulating the first coil, the electrical circuit device and the jointed leads of the first coil and the electrical circuit device in an encapsulation material. The jointing alloy has a melting point higher than a highest temperature experienced by the encapsulation material having the encapsulation process.

Abstract: A composite superconducting wire and a method of manufacturing the wire is disclosed. Nano-particle dispersion strengthened copper is co-drawn with Niobium rod to produce DSC-1Nb wire. n numbers of DSC-1Nb wires are then stacked in a hollow DSC tube and drawn to form a DSC-n.Nb hexagonal wire. In a separate preliminary process, Tin rod is co-deformed with Copper tube to form a Cu-1Sn wire. m DSC-n Nb wires and 1 Cu-1Sn wires are then wrapped by Niobium foil and placed into a Copper tube. This entire assembly is then drawn to a finished size. The drawn composite is then subjected to heat treatment with a final stage at 650-700° C. for about 100 hours or longer. The new wire has higher electric critical current and higher mechanical strength than the controlled conventional ones.

Abstract: Disclosed are a superconductive magnet manufactured by winding a thin superconductive rod wire in a coil without joint for maintaining a persistent current mode, and a method for manufacturing the same. The method includes winding both ends of a superconductive rod wire (10) on a first bobbin (21) and a second bobbin (22) respectively; forming a first unit rod wire (10a) and a second unit rod wire (10b) by slitting the superconductive rod wire (10) in the lengthwise direction; producing a pancake coil by winding the first and second unit rod wires (10a, 10b) on third bobbins (25) in one direction; and arranging the first and second unit rod wires (10a, 10b) such that magnetic fields (B, B?) in the same direction are generated from the pancake coil, by reversing one of the third bobbins (25) on which the first and second unit rod wires (10a, 10b) are wound.

Abstract: In a fabrication method of a MgB2 superconducting tape and wire by filling a tube with a MgB2 superconducting powder and forming it into a tape or wire, a fabrication method of a MgB2 superconducting tape (and wire) which is characterized by using a MgB2 superconducting powder having a high critical current density (Jc) owing to its lowered crystallinity and having potential for excellent grain connectivity as the MgB2 superconducting powder. Provided are a fabrication method of a MgB2 superconducting tape and wire which can fabricate a MgB2 superconducting tape and wire having a level of Jc sufficiently high for practical applications and homogeneous quality throughout its length by an ex-situ process employing a material of the composition suitable for its working environment as the sheath material, and a MgB2 superconducting tape and wire thereby fabricated.

Abstract: Apparatus for forming high temperature superconductor (HTS) continuous conductor elements from a substrate, comprises a punch cutting tool for punching from a continuous strip material at successive operations of the punch cutting tool successive parts of the length of each of a plurality of continuous serpentine conductor elements; a feed system for feeding in steps the continuous strip material through the punch cutting tool between operations of the punch cutting tool; and a plurality of synchronized take-up spools for taking up each of the conductor elements from the punch cutting tool.

Abstract: A method for making a composite superconductor and a superconductor made using the method. Superconducting filaments are embedded in a matrix material. Oxygen-containing elements are also embedded in the matrix material, with the oxygen-containing elements preferably being dispersed evenly among the superconducting filaments. A surrounding reinforcement material contains the other elements and preferably seals the superconductor from the surrounding atmosphere.

Abstract: A method of manufacturing a superconductive electric conductor is indicated, which includes as the superconductive material as ceramic material. For carrying out the method, around a plurality of flat strips (1) of a carrier coated with a superconductive ceramic material, a longitudinally entering metal band (3) is formed into a pipe having a slot extending in the longitudinal direction, where the edges located at the slot next to each other are welded together. The strips (1) are fed to the pipe with continuous change of location in such a way that each strip along the length of the conductor assumes different positions over the cross section thereof. The pipe (9) closed by the welding procedure is subsequently reduced to an interior width which corresponds approximately to an enveloping curve of all strips (1) located in the pipe.

Abstract: A process of a superconducting wire is provided, which includes a step for twisting a first wire with a second wire that is different from the first wire and a step for filling a twisted wire of the first wire and the second wire in a metal tube, or enveloping the twisted wire in a metal sheet. According to the process, for example, an MgB2 superconducting wire that has a long homogeneity and high Jc can be obtained constantly.

Abstract: A superconductor for mitigating the effects of local current disruptions in a superconducting filament. The superconductor comprises superconducting filaments covered by a medium in electrical communication with the filaments. The covering medium has anisotropic conductivity, the conductivity in a direction substantially aligned with the filaments being selected to stabilize the superconductor near the critical temperature, and the conductivity of the covering in a direction substantially perpendicular to the filaments being selected to permit controlled current sharing between the filaments, especially when a filament is compromised, while simultaneously limiting alternating current (ac) losses. In various embodiments, the covering comprises a wire mesh having longitudinal wires made of a first material having a first conductivity, and transverse wires made of a second material having a second conductivity, different from the first conductivity.

Abstract: A superconducting magnet assembly is provided. The superconducting magnet assembly includes a superconducting magnet configured to generate a static magnetic field, an iron shield configured to shield the superconducting magnet, and a magnetic gradient coil assembly configured to generate a gradient magnetic field. The superconducting magnet assembly further includes one or more magnetic lamination elements disposed on the iron shield to reduce eddy current induced by the gradient magnetic field in the iron shield. A method is also presented.