587 results about "Superconducting material" patented technology

The invention discloses a superconductive processor micro-architecture construction method based on RISC-V. The superconductive processor micro-architecture construction method aims at achieving efficient operation and performance optimization of a processor in an ultralow-temperature environment. The method comprises the following steps: firstly, designing a functional module and an assembly line of a processor based on an RISC-V instruction set, and presetting initial parameters; next, micro-architecture parameters are selected and optimized through a simulation tool and a multi-objective optimization algorithm, and balance among performance, power consumption and chip area is ensured; then, a low-temperature cooling system is designed and integrated, and it is ensured that the processor stably operates in an ultralow-temperature environment of 2-4 Kelvin; the function correctness and the performance efficiency of the processor are verified through simulation and actual testing; and finally, manufacturing a key assembly by using a superconducting material, and integrally packaging the processor and the cooling system. By combining refined performance optimization and a comprehensive performance evaluation algorithm, the performance and energy efficiency of the processor in a complex environment can be remarkably improved.

The embodiment of the invention provides a microresonator and a preparation method of the microresonator, the microresonator can be obtained by connecting an MIM plate capacitor and an inductor of a planar coil structure, and an upper electrode, a lower electrode and the inductor of the MIM plate capacitor and a microstrip line connecting the capacitor and the inductor are all prepared from superconducting materials. A dielectric layer of the MIM plate capacitor can be prepared by adopting an ALD technology, a dielectric film grown by adopting the ALD technology is very compact and has very good thickness uniformity, a relatively high dielectric constant can be realized, and the quality factor of the microresonator can be remarkably improved by combining the zero resistance characteristic of a superconducting material; and the miniaturization of the microresonator can be realized. Moreover, in the preparation process, the three layers of thin films for forming the capacitor and the inductor are formed through deposition firstly, and then the three layers of thin films are patterned layer by layer, so that introduction of excessive impurities can be avoided, interlayer contact can be optimized, and the risk of electric leakage can be reduced.

The invention discloses a state evaluation and fault early warning method and system based on superconducting current limiter modeling, an electromagnetic heat multi-physical field coupling model of a superconducting current limiter is constructed based on finite element software, and the method comprises the following steps: constructing a three-dimensional geometric structure of a solenoid-shaped superconducting current limiter, and setting a peripheral electromagnetic environment boundary; establishing an electromagnetic field control equation based on a Maxwell equation set and the nonlinear resistivity characteristic of the superconducting material, and coupling a solid heat transfer control equation to form a multi-physical field interaction model; optimizing grid division to balance calculation precision and solving efficiency; body parameters of the superconducting current limiter including the initial critical current Ic0 and the critical temperature Tc and working condition parameters including the environment temperature and the transmission current It are input, the parameters are dynamically adjusted according to the actual operation scene, and the voltage U at the two ends during normal operation is calculated through a model; by collecting voltage measured values Up at the two ends of the superconducting current limiter during actual operation in real time, whether the voltage measured values Up exceed a threshold value set according to the voltage U or not is judged, and an early warning mechanism is triggered.

The invention discloses a high-intensity magnetic field-high temperature and high pressure water coupling environment material corrosion experiment device and method. The device comprises a pressure water generation device, a pressure water circulation loop, an experiment pipe section, a high-intensity magnetic field generation device and a control and data acquisition system. According to the invention, the corrosion experiment of the material in the 10T-magnitude magnetic field environment can be realized, the influence of the 10T-magnitude high-intensity magnetic field environment on the corrosion effect of the material can be accurately researched, and a reference is provided for the design of a fusion reactor. The outer side of the experimental pipe section is coated with a thermal insulation material, so that the influence of a high-temperature environment on a superconducting material coil of the high-intensity magnetic field generation device can be avoided. The device is suitable for various metal materials and non-metal materials, and by arranging the heating and cooling branch and the experiment branch, the heating and cooling time of material parts for experiments is shortened.

The invention relates to the technical field of electric wires and cables, and discloses an ultrahigh-conductivity electric wire and cable and a preparation method thereof. A graphene enhancement layer; a nano composite insulating material layer; an inner semi-conductive layer; a conductive copper strip shielding layer; a silver-plated copper wire woven mesh shielding layer; an intelligent monitoring and protection sheath; the method comprises the following steps: step S01, preparing a superconducting core wire strand; step S02, preparing a nano composite insulating material layer; s03, preparing a shielding layer; step S04, intelligent monitoring and protection sheath preparation; the superconducting core wire strand formed by twisting a plurality of YBCO superconducting material filaments forms a stable structure with excellent conductivity under the precise control of twisting process parameters, so that the resistance is effectively reduced, the loss in the electric energy transmission process is reduced, the electric energy transmission efficiency is improved, high-density current can be borne for stable transmission, and the service life of the cable is prolonged. And the requirement of the modern electrical engineering field on high conductivity of wires and cables is met.

The invention provides a method for preparing an iron-based superconducting material single crystal in a microgravity environment, and belongs to the field of superconducting materials. The method specifically comprises the following steps: carrying out a microgravity crystal growth experiment in a high-temperature experiment cabinet of a space station, putting a solid-phase sintered or pre-melted rod-like raw material into a furnace body, heating and melting, then slowly solidifying, and finally growing the iron-based superconducting material single crystal with large size and extremely low defect density.

The invention belongs to the field of information management systems, and particularly relates to an efficient electric energy transmission and distribution system based on a novel superconducting material. Key problems in the electric energy transmission and distribution process are solved through technologies such as fractal geometry and topological optimization, tensor analysis and multi-physics field coupling. The system can improve the power transmission efficiency, optimize the distribution scheme, enhance the system stability, provide powerful support for the development of a power system, and has important application value.

Disclosed is a technique that enables structural reinforcement and thermal stabilization of the conductor winding in a superconducting coil configuration, and superconducting coils produced via the technique. The superconducting coils generally include coil windings of superconducting materials defining an electrically conductive channel having an inlet and an outlet, where the coil windings are either (i) helically wound around a curve around a central axis or (b) wound in helical layers around a curve around a central axis. One or more of the coil windings are operably coupled to at least one co-wound reinforcement layer, where the at co-wound reinforcement layer(s) are positioned between at least two adjacent superconducting coil windings or layers of superconducting coil windings. The method can significantly improve the packing factor in a coil winding while simplifying quench protection, permitting the construction of all-metal high field magnets with large bore and high magnetic field.

The present invention relates to the technical field of superconducting materials. Disclosed are a MgB2 superconducting wire and a preparation method therefor. The preparation method comprises: melting Mg, Cu and Ti to obtain a Mg alloy ingot, processing the Mg alloy ingot to obtain a Mg alloy rod, loading the Mg alloy rod and B powder into a Nb tube to obtain a composite rod, processing the composite rod to obtain a single-core wire, loading the single-core wire into an oxygen-free copper tube, then loading into a monel tube in a densely-packed manner, and performing cold-forming treatment to obtain a multi-core composite wire; and performing high-temperature phase-forming heat treatment on the multi-core composite wire to prepare the MgB2 superconducting wire. In the present application, the Mg alloy rod containing Cu and Ti metal elements is used as a Mg source for preparing a MgB2 multi-core wire, so as to improve the plastic deformation ability of the Mg alloy rod in the wire treatment processes, and improve the grain boundary coupling, thereby improving the current carrying performance of the MgB2 superconducting wire.

The invention belongs to the technical field of superconducting wires, and relates to a connecting structure and a connecting method of superconducting tapes and a connecting superconducting wire. The invention relates to a connecting structure of REBCO superconducting tapes. The connecting structure comprises a first REBCO superconducting tape and a second REBCO superconducting tape, the to-be-connected areas of the first REBCO superconducting tape and the second REBCO superconducting tape are in a step shape, and the splicing angle of the to-be-connected areas is an acute angle. When the REBCO superconducting tape is connected through the connecting structure of the REBCO superconducting tape, the electrical transport performance of the connector is not affected by an intrinsic weak connecting structure of the REBCO layer in the vertical direction, pressure does not need to be applied, and the connecting process is conducted in an open environment.

The invention discloses a quality evaluation system for preparing a superconducting material and a preparation process thereof, which are used in the field of quality evaluation, and the quality evaluation system comprises a data collection module, a data analysis module, a multi-dimensional quality evaluation model construction module, a monitoring and adjusting module and a quality evaluation module. According to the method, various physical fields and various influence factors can be comprehensively considered, the performance of the superconducting material in a future environment is predicted by comprehensively considering the various influence factors and simulating different environmental conditions, optimization and adjustment are carried out according to an actual application result, different environmental conditions are simulated by utilizing simulation software, and the performance of the superconducting material in a future environment is predicted. The performance of the material under various conditions can be evaluated under the condition that the physical environment is not actually changed, the cost and time are saved, and the influence degree of different environmental factors on the performance of the superconducting material and the interaction among the different factors are analyzed through statistical methods such as variance analysis.

The invention belongs to the technical field of superconducting material processing, and discloses a multi-barrier-layer MgB2 superconducting wire and a preparation method thereof. A plurality of groups of interlayers of the wire are composed of Cu / Ni / Nb, outer-layer copper serves as a stabilizer, Ni serves as a low-cost outer barrier layer, Ni and the outer-layer copper are mutually diffused in the hot extrusion process to form a stable Cu-Ni compound, and Nb foil is added into the Ni layer to serve as an inner barrier layer so as to restrain the diffusion problem of a small amount of Ni-Mg. According to the multi-barrier-layer MgB2 superconducting wire, Nb is greatly replaced by Cu / Ni, the raw material cost is remarkably reduced, the barrier layers are mutually diffused in the hot extrusion process to achieve metallurgical bonding, uniform deformation of the wire in the subsequent machining process is facilitated, the possibility of damage of the barrier layers is reduced, the current-carrying performance of the wire is improved, the Jc of the multi-barrier-layer MgB2 superconducting wire under 4.2 K and 3T is 5199-6271 A / mm < 2 >, and the service life of the multi-barrier-layer MgB2 superconducting wire is prolonged. And the current-carrying performance is obviously improved, and the application prospect is wide.

The invention belongs to the technical field of high-temperature superconducting detection, and discloses a quench detection sensor based on a high-temperature superconducting material and a detection method.The quench detection sensor comprises an inner layer structure composed of a metal base band, a first insulating layer and a high-temperature superconducting material layer, and a second insulating layer arranged between the metal base band and the high-temperature superconducting material layer; the second insulating layer covers the areas, not at the two ends, of the outer side of the inner layer structure, and a metal base band or a high-temperature superconducting material layer is arranged between the second insulating layer and the first insulating layer; the two ends of the short-circuit connection metal are fixedly connected to the first end of the metal base band and the first end of the high-temperature superconducting material layer respectively; the number of the connecting terminals is two, the two connecting terminals are jointly used for being connected with a detection voltmeter and a detection current source through wires, and the two connecting terminals are fixedly connected to the second end of the metal base band and the second end of the high-temperature superconducting material layer respectively. The quench detection sensor is high in detection reliability.

The invention relates to the technical field of superconducting material processing, in particular to a preparation method of an Nb3Sn superconducting wire. The method mainly comprises the steps that Nb-Zr alloy is loaded into the exterior and / or the center of a Sn-Cu single-core rod, oxide powder is filled between the Nb-Zr alloy and the Sn-Cu single-core rod, then the Sn-Cu single-core rod and the Nb-Zr alloy are loaded into a copper substrate, and Nb3Sn subcomponents are obtained after multi-pass stretching, forming and fixed-length cutting; and uniformly arranging the Nb3Sn sub-components in the copper pipe along the circumferential direction to form a bundle, and after multi-pass stretching, carrying out heat treatment and cutting to obtain the Nb3Sn superconducting wire. By introducing the artificial point pinning array in density gradient distribution, the critical current density of the Nb3Sn superconducting wire in a high magnetic field of 8T-16T is enhanced, the problems that an existing uniform artificial point pinning center scheme generates a matching effect and limits the actual application of the superconducting wire are solved, and the decline degree of the critical current density of the Nb3Sn superconducting wire in the high field is relieved.

The invention relates to a superconducting electrical switch. The switch comprises two parallel branches of superconducting material in a loop, and a magnetic field generator which generates a time-varying magnetic field through the loop in a direction generally parallel to the axis of the loop. The magnetic field generator is selectively activated and de-activated to switch the electrical switch between a low-resistance state and a higher-resistance state. In the low-resistance state, there is no magnetic field through the loop and transport current flows through the loop. In the higher-resistance state, a magnetic field through the loop induces a screening current such that the sum of the transport current and the screening current is substantially equal to the critical current or is greater than the critical current of the superconducting material. The switch may be used in, for example, a rectifier or fault current limiter.

A superconductor magnet system including a superconductor magnet including a plurality of field coils connected in series, each field coil having a plurality of turns including superconductor material. The system also includes a primary electric current source connected across the plurality of the field coils for supplying a DC electric current to the field coils to generate a magnetic field. The system further includes a secondary electric current source connected in parallel with the primary electric current source across a subset of the field coils for supplying an additional DC electric current to the or each field coil in the subset to modify or correct the magnetic field.

The invention discloses a superconductive strip turn-to-turn conductivity measurement method and system, and belongs to the technical field of superconductive material conductivity measurement. The voltage of the turn-to-turn contact part is measured by increasing the injection current from 0A to 50A at the rate of 1A / s, and the turn-to-turn contact resistance is deduced by fitting the slope of a U-I characteristic curve, so that the calculation precision of the turning contact resistance is improved, and errors caused by electrical noise are reduced; the obtained inter-turn contact resistance is averaged and divided by the contact area, the inter-turn contact conductivity is obtained, errors caused by strip sample differences are reduced, and the accuracy of inter-turn contact resistivity calculation can also be improved through a slope fitting method. The correlation between the radial pressure and the contact conductivity is established according to the change condition of the turn-to-turn electric shock conductivity along with the stress, and the contact conductivity of the superconducting tape under different stresses can be accurately measured.

The invention relates to high temperature superconducting qubits with disorder induced tunnel barriers. A superconducting qubit circuit and a method of forming a superconducting qubit are disclosed herein. A superconducting qubit circuit includes a superconducting qubit, where the superconducting qubit includes a tunnel junction in a superconducting material having a critical temperature above 1.2 K. The tunnel junction is formed from a disorder-induced tunnel barrier, where the disorder results from spatial crystal defects in the superconducting material.

The invention belongs to the technical field of superconducting material detection, and particularly relates to a superconducting wire torque measuring method. The invention discloses a superconducting wire torque measuring method, which comprises the following steps of: annealing a superconducting wire to be detected in an annealing furnace, spraying paint on the surface of the superconducting wire, rolling the superconducting wire, removing paint, and measuring the distance between threads on the surface of a bare wire. And calculating the torque of the superconducting wire according to the distance between the threads, the number of core wires on the outermost layer of the wire and the length of the wire before and after rolling. The torque of the wire rod is measured according to the hardness difference between the superconductor and the base body. The method is simple to operate, wide in application range and high in measurement precision.

An example method described herein includes operating a first component of a circuit. The method also includes, while operating the first component, supplying a current to a superconducting wire that is thermally-coupled to the first component, and determining whether the superconducting wire has transitioned between a superconducting state to a non-superconducting state in response to the current. The method further includes measuring a temperature of the first component based on whether the superconducting wire transitioned between the superconducting state to the non-superconducting state in response to the current, and adjusting operation of the first component in accordance with a determination that the temperature exceeds a predetermined threshold temperature.

The invention belongs to the field of superconducting material measurement, and discloses a sample rod for testing the anisotropy of a critical current of a superconducting strip. The sample rod comprises a mechanical transmission device, a sample mounting platform, a Hall sensor and an electric signal transmission device, the mechanical transmission device comprises a worm and worm wheel transmission set, a straight gear set and a transmission shaft, and the transmission shaft is vertically connected between a worm wheel and the straight gear set. The sample mounting platform comprises a sample table and a copper current terminal, the sample table is arranged in the middle of the copper current terminal, and the copper current terminal is fixedly connected with the straight gear set; the Hall sensor is arranged on the back of the sample table and electrically connected with the electric signal transmission device. According to the invention, the sample mounting platform is driven to complete continuous rotation based on a dual transmission mechanism of the worm and worm gear transmission group and the straight gear group, and meanwhile, the Hall sensor is combined to realize critical current measurement of the superconducting tape under low-temperature, large-current, different-size and angle magnetic fields.

The invention discloses a multi-field coupling fatigue test device and method for a high-temperature superconducting tape, and belongs to the field of superconducting tape fatigue tests.The multi-field coupling fatigue test device for the high-temperature superconducting tape comprises a fatigue testing machine, and a test container used for providing a low-temperature field is arranged in a test area of the fatigue testing machine; a clamp assembly used for fixing a sample to be tested is arranged in the experiment container, the clamp assembly is connected with a current assembly used for providing an electric field, and a magnet assembly used for providing a magnetic field is arranged in the experiment container. According to the multi-field coupling fatigue test device and method for the high-temperature superconducting strip, the limitation of an existing test means is broken through, and a reliable experimental platform and application value are provided for mechanical property research and service life evaluation of superconducting materials and other low-temperature service materials.

A superconducting qubit-based device includes: a superconducting qubit comprising a first conductive pad and a second conductive pad, each being formed of a superconducting material, and a ferromagnetic body configured to form a Josephson junction with the first conductive pad and the second conductive pad; a conducting wire spaced apart from the ferromagnetic body by a predetermined distance; and a control circuit configured to control a resonance frequency of the superconducting qubit by controlling a current flowing through the conducting wire.

The invention discloses a preparation method of stable in-situ 14: 24 AEC second-phase Bi-2212 powder, which comprises the following steps: preparing powder with specific components by controlling the components of a Bi-2212 precursor solution, and then adjusting by a fine heat treatment process to obtain the stable in-situ 14: 24 AEC second-phase Bi-2212 powder. According to the method disclosed by the invention, components of a Bi-2212 precursor solution are controlled, the components of Bi-2212 precursor powder after heat treatment and the molar ratio of Sr to Ca are monitored to be within a specific range, and a heat treatment process is matched for adjustment, so that stable generation of a 14: 24 AEC second phase in the Bi-2212 precursor powder is ensured; the self-generated 14: 24 AEC second phase can improve the critical current density of the Bi-2212 superconducting material; the method is easy to operate, low in cost, high in controllability and operability and suitable for being rapidly applied to the field of Bi-2212 superconducting material preparation.

The invention relates to the technical field of superconducting material performance test instruments, and discloses a static and dynamic superconducting block magnetic force test board and a test method.The test board comprises a mechanical motion system, and the mechanical motion system is composed of a base, a shell, a horizontal ball screw and a vertical ball screw; the horizontal ball screw, the vertical ball screw and the shell are all fixed at the upper end of the base, and the dynamic vibration excitation device comprises an electric vibration exciter which is fixed at one side of a vertical ball screw movable table and is used for applying vibration to the superconducting block to be tested so as to suppress magnetic attenuation; and one side of the annular track is provided with a clamping assembly, and the clamping assembly is used for fixing the superconducting block to be tested. According to the static and dynamic superconducting block magnetic force test board and the test method, three-dimensional magnetic force synchronous measurement of the superconducting block under static and dynamic working conditions can be realized, the limitation that traditional equipment only limits single-axis static test is overcome, and the magnetic influence of a real continuous alternating magnetic field on the superconducting block is simulated.

The utility model relates to the technical field of superconducting, in particular to a superconducting coil connector device, a superconducting coil unit and medical equipment thereof. A superconducting coil joint device is used for connecting at least two superconducting coils, and comprises a to-be-cooled component used for accommodating a low-temperature superconducting material and allowing a part of the superconducting coils to extend into; the first cold guide column is used for being connected with a cold source; one end of the second cold conduction column is mounted in the to-be-cooled component and is in contact with the low-temperature superconducting material, and the other end of the second cold conduction column is arranged by keeping a preset distance from the low-temperature superconducting material in the to-be-cooled component; and the insulating cold conduction piece is located between the ends, away from the to-be-cooled component, of the first cold conduction column and the second cold conduction column, and connects the first cold conduction column with the second cold conduction column, so that the cooling capacity of the cold source is transmitted to the second cold conduction column through the first cold conduction column. The device has the advantages that the first cold conduction column and the second cold conduction column can keep a low-temperature environment in the to-be-cooled component, so that connection between two superconducting coils is realized.

In a general aspect, a flexible cable communicates electromagnetic signals in a cryogenic system. In some aspects, the flexible cable includes a signal layer and a ground layer. The signal layer includes signal lines embedded in adhesive material. Each signal line includes a multilayer structure. The multilayer structure includes a layer of non-superconducting material and a layer of rhenium metal. The ground layer is laminated to the signal layer.

The invention relates to the technical field of superconducting materials, in particular to a method for preparing a Ni3Sn wire through an internal tin method. The method comprises the following steps: by taking inner tin method Nb3Sn wire sub-components in different shapes as initial raw materials, densely arranging and filling the initial raw materials into Ta tubes with corresponding sizes, then filling the Ta tubes filled with the sub-components into oxygen-free copper tubes to form an inner tin method Nb3Sn composite wire, processing the inner tin method Nb3Sn composite wire to a fixed size, wrapping two ends of the composite wire with polytetrafluoroethylene to prevent an acid solution from entering the composite wire, and finally obtaining the inner tin method Nb3Sn composite wire. And after acid pickling, the composite wire is loaded into the oxygen-free copper pipe again, and the steps are repeated to obtain the internal tin method Nb3Sn wire rods with different copper ratios. According to the large-copper-ratio wire prepared through the method, the defect that an Nb3Sn wire prepared through an existing preparation method is prone to breakage and unstable in the large-size stage stretching process is overcome, the mold universality is improved, and stretching of the Nb3Sn wire prepared through the internal tin method with different copper ratios can be completed through a fixed mold.

Techniques are described for lowering strains applied to superconducting material in a superconducting magnet by arranging structural partitions between turns of the superconducting material that intercept and transfer strain to a mechanically stronger structure, such as the housing of the magnet. A structural partition may be formed with a feedthrough slit so that the superconducting material can easily pass through the partition. A number of structural partitions may be interspersed between groups of turns of superconducting material in a magnet so that forces can be sufficiently distributed by the partitions throughout the magnet. At the same time, the number of structural partitions may be selected to minimize the amount of space within the magnet occupied by the partitions that could otherwise be occupied by current-carrying superconducting material.

A cable structure for use in a wellbore formed in a subsurface formation. The cable structure comprises superconducting material configured to provide power to a downhole tool in the wellbore. The cable structure comprises a cryogenic liquid supply channel configured to supply fluid to reduce temperature of the superconducting material. The cable structure comprises one or more cryogenic liquid return channels.