42 results about "Superconductor classification" patented technology

The invention provides a superconducting quench detection system and method, and the system comprises an OFDR signal collection module which is used for obtaining an optical frequency domain reflection signal and transmitting the optical frequency domain reflection signal to a data fusion and preprocessing module; the voltage signal acquisition module is used for acquiring and transmitting a voltage signal; the data fusion and preprocessing module is used for fusing and preprocessing the received optical frequency domain reflection signal and the voltage signal and outputting a processing result; and the CNN model training and recognition module is used for constructing and training a CNN model for quenching signal classification and recognition based on the processing result of the data fusion and preprocessing module, and outputting a detection result. According to the superconducting quench detection system based on optical frequency domain reflection, the convolutional neural network and voltage signal fusion, the advantage of high-precision distributed measurement of the OFDR technology, the powerful feature extraction and classification capability of the CNN and the characteristic that the voltage signal directly reflects the state change of the superconductor are comprehensively utilized, and faster and more accurate detection of superconducting quench is achieved.

The invention belongs to the technical field of quantum functional materials, and particularly relates to an FCC structure Mo-based medium-entropy carbide superconducting material and a preparation method thereof. According to the method, Mo, Ir and C are ground and pressed into blocks according to the stoichiometric ratio, the Mo3Ir2C polycrystalline block of a face-centered cubic structure is synthesized in one step through electric arc melting, the superconducting transition temperature of the Mo3Ir2C polycrystalline block is 3.33 K, and the upper critical field of the Mo3Ir2C polycrystalline block is 2.53 T. Meanwhile, Pt is further used for partially replacing Ir to prepare Mo3IrPtC, the valence electron concentration is increased to 6.83 from 6.67, the superconducting performance is further optimized, the transformation temperature reaches 3.50 K, and the upper critical field is increased to 4.05 T. The material is a new member of the superconducting family, provides a platform for exploring the superconducting performance of the middle / high-entropy carbide in the face-centered cubic structure, can be used in the fields of electric power communication and the like, enriches related researches, and promotes the practical application of the middle / high-entropy superconductor.

The invention relates to the technical field of liquid level measurement, and particularly discloses a liquid level measuring instrument for a low-temperature container, which comprises a superconductor floater, a magnet track, a floater position measuring device and a display device. Wherein the superconductor floater is locked by the magnetic flux of the magnet track, the magnet track is fixedly arranged on the display device, the floater position measuring devices are respectively arranged on the conductor floater and the magnet track, the floater position measuring devices are in signal connection with the display device, and liquid level information is displayed. The superconductor in the superconductor floater is made of a superconducting material in the prior art, and the material can be adjusted according to the temperature in the low-temperature container; according to the invention, the magnetic flux locking effect of the superconductor in the magnetic field is utilized, so that the position of the superconductor floater is controllable, the friction influence caused by fixation or measurement is reduced, and meanwhile, the problem of mechanical faults or measurement faults caused by frosting is also solved.

A high-temperature superconducting qubit implements a quantum mechanical two-level system. The high-temperature superconducting qubit comprises a first superconductor, a second superconductor, and an overlap region. The first superconductor comprises a first high-temperature superconductor material. The second superconductor comprises a second high-temperature superconductor material. In the overlap region, at least a first section of the first surface and at least a second section of the second surface overlap, the first section and the second section are arranged in parallel at a distance corresponding to a predefined distance, and the first orientation and the second orientation are arranged with an angle corresponding to a predefined angle. The high-temperature superconducting qubit comprises a Josephson junction between the first high-temperature superconductor material and the second high-temperature superconductor material. The Josephson junction provides the quantum mechanical two-level system of the high-temperature superconducting qubit.

A ReBCO-based high-temperature superconductor composition and a method for producing the same are provided, wherein a part of Gd is substituted by Ho, wherein the ReBCO-based high-temperature superconductor is substituted by ReBa 2 Cu 3 O 7-δ where Re comprises or consists of Gd and Ho. The superconductor can improve the critical current density without changing the critical temperature.

There is a superconducting article that includes a superconducting film comprising a substrate, one or more buffer layers, and a high temperature superconducting (HTS) layer. The superconducting layer may be comprised of the chemical composition REBa2Cu3O7-x, where RE is one or more rare earth elements, for example: Y, La, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu. The superconductor layer is produced using Photo-Assisted Metal Organic Chemical Vapor Deposition (PAMOCVD) and contains non-superconducting nanoparticles. The nanoparticles are substantially provided in the a-b plane and naturally oriented. The non-superconducting nanoparticles provide flux pinning centers that improve the critical current properties of the superconducting film.

A stellarator comprising a non-planar magnetic field coil with a cable as well as a method for providing a cable for a non-planar magnetic field coil in a stellarator is presented. The cable comprises an inner section (100) comprising multiple layers of superconductor material (200), the multiple layers of superconductor material (200) having a first orientation (210, 210a, 210b, 210c), an outer section (300) surrounding the inner section (100), the outer section (300) having a cross-section (310) with a second orientation (320, 320a, 320b, 320c), wherein the outer section (300) comprises a first conductive material (410) which fixes the first orientation (210, 210a, 210b, 210c), wherein the first orientation (210, 210a, 210b, 210c) changes along a length (50) of the cable (40) with respect to the second orientation (320, 320a, 320b, 320c).

A device includes a substrate including a first layer and a second layer. The first and second layers are positioned adjacent to each other and comprise a common boundary region extending from the first layer to the second layer. The first layer comprises graphite with a Bernal-crystal structure. The second layer comprises graphite with a rhombohedral crystal structure. The boundary region includes a border region having superconducting properties, namely; at a current density of 0 Ampere / m2 and a magnetic flux density of 0 Tesla exhibiting a critical temperature (Tc) which is higher than −195° C., and / or at a temperature below the critical temperature (Tc) and a current density of 0 Ampere / m2, exhibiting a critical magnetic flux density (Bk) that is higher than 1 Tesla. The border region is coupled to an electric and / or a magnetic and / or an electromagnetic signal with a frequency greater than or equal to 0 Hertz.

A superconductor device disclosed includes a plurality of superconductor layers and dielectric layers interleaved with the plurality of superconductor layers with moat regions that extend through the plurality of superconductor layers and the dielectric layers and a composite material ground plane that is one of the superconductor layers of the plurality of superconductor layers, the composite ground plane comprises first regions formed of a first superconductor material, and second regions formed of a second superconductor material having a second superconducting critical temperature higher than a first superconducting critical temperature of the first superconductor material, such that at least one flux vortex caused by cryogenic cooling can be removed from the second region during cooling below the second critical temperature and above the first critical temperature to the first regions, and removed from the first regions to the moat regions upon cooling below the first critical temperature.

The present description relates to a method and a device for providing anyons that may be used for topological quantum computation. The method comprises the steps of providing a magnetic material containing at least one magnetic texture providing a superconductor containing at least one vortex; creating at least one magnetic texture-vortex pair by coupling the magnetic material to the superconductor, wherein each magnetic texture-vortex pair binds an anyon being localized at the vortex of the respective magnetic texture-vortex pair in the superconductor.

The invention discloses a hydrogen-based superconducting material Na2GaCuH6 with a double perovskite structure under normal pressure and a preparation method of the hydrogen-based superconducting material Na2GaCuH6. The material has an Fm-3m space group, the lattice constant is calculated and predicted through the first principle, and the material has the superconducting transition temperature of 42.04 K under the normal pressure condition. The material is composed of four common elements of Na, Ga, Cu and H, and the cost is low; the double perovskite structure is stable in thermodynamics and dynamics under normal pressure; the electro-acoustic coupling constant lambda is approximately equal to 0.98, and medium-intensity electro-acoustic coupling is achieved. Compared with an existing high-voltage hydride superconductor, the material can work without high-voltage equipment, and the preparation and application cost is greatly reduced; compared with a traditional normal-pressure superconductor, the superconductor has a higher Tc value. The material can be applied to the fields of low-temperature superconducting devices, superconducting magnets, quantum computing and the like, and has important scientific research value and application prospect.

The present specification describes a cryogenic temperature sensor comprising: a sample of superconductor material; a current source configured to pass a current through the sample of superconductor material; and a voltage sensor configured to sense a voltage across the superconductor material sample. The temperature sensor further comprises a control unit configured to: control the current source to vary the current through the sample of superconductor material over time while the voltage sensor senses the voltage across the sample of superconductor material; detecting a change in the sensing voltage; and calculating the temperature of the superconductor material sample based on the detected current value at which the sensed voltage changes.

An embodiment of a method for qubit tuning includes generating a first magnetic field through a portion of a first layer, the first layer including a material that exhibits superconductivity in a cryogenic temperature range, the portion of the first layer being above a critical temperature. In an embodiment, the method includes cooling the portion of the first layer to at least the critical temperature. In an embodiment, the method includes generating a second magnetic field in response to cooling the portion of the first layer to at least the critical temperature, the second magnetic field magnetically interacting with a qubit of a quantum processor chip such that a first magnetic flux of the first layer causes a first change in a first resonant frequency of the qubit by a first frequency shift value.

The present invention discloses a terminal box, which belongs to the technical field of fusion superconducting coils, and comprises: a first supporting mechanism; a second supporting mechanism is provided on one side of the first supporting mechanism, the first supporting mechanism is provided with a first mounting assembly for mounting a superconductor, and the second supporting mechanism is provided with a second mounting assembly for mounting a connecting terminal, and an operating space and a testing space acting on the terminal box are formed by the first mounting assembly and the second mounting assembly; the superconductor and the connecting terminal are supported and connected by the first supporting structure and the second supporting structure, so as to protect the pipelines and the connecting terminals of the superconductor and withstand the influence of gravity and electromagnetic force connected to the feeder system, and the first mounting assembly and the second mounting assembly form an operating space and a testing space, which are convenient for installing and testing the superconductor.

The utility model discloses a demonstration appliance for physics teaching, which relates to the technical field of physics experiments, and comprises a track assembly in a closed shape connected end to end, and the track assembly is used for providing a suspension moving path of a superconductor; the moving assembly is arranged on the inner side of the track assembly and used for providing the superconductor close to or away from the surface of the track assembly; the releasing and recycling assembly is connected to the moving assembly and is used for bearing the superconductor; the releasing and recycling assembly is further provided with a plurality of rotating rollers, and the superconductors can be placed on the rotating rollers. According to the demonstration instrument for physics teaching, the problems of stability, safety and operation convenience of a demonstration device in the prior art are effectively solved.

The invention relates to a symbol regression-based hydrogen-based superconductor critical transition temperature prediction method. Aiming at the problems of insufficient physical interpretability, limited generalization ability and the like of an existing hydrogen-based superconductor prediction method, the method innovatively introduces electronic state density integral characteristics near Fermi level, and constructs an explicit superconducting critical transition temperature prediction formula through a symbolic regression algorithm. By comprehensively considering the training of 343 samples and the fitting effect of 74 independent verification samples, the model shows excellent prediction precision (the training set RMSE is 20.15 K, and the verification set is 34.72 K), and is suitable for high-throughput screening of hydrogen-based superconducting materials.

A system for generating a magnetic field in one or more axes is provided. The system includes a primary electromagnet including a first coil having a first axis, a first secondary electromagnet including a second coil having a second axis, and a second secondary electromagnet including a third coil having a third axis. The first, second, and third axes are non-parallel, and the first, second, and third coils are formed of a superconductor. The system includes a cooling element configured to cool the first, second, and third coils below a critical temperature of the superconductor, and a power supply configured to provide power to the primary and secondary electromagnets.

The present disclosure relates to a deposition apparatus (100) for depositing a HTS material onto a first surface (11) of a substrate (10), the deposition apparatus comprising: - a deposition chamber (101) comprising side walls (111, 112); - a substrate transport system for transporting the substrate in the deposition chamber along one or more of the side walls; - a heating system for heating the substrate in the deposition chamber at a first temperature; - a precursor inlet (160) for delivering a gas flow (20) including an HTS material precursor into the deposition chamber; wherein the side walls of the deposition chamber are arranged in such a way that, when the substrate is transported along the one or more side walls of the deposition chamber, a first part (11A) of the first surface faces a second part (11B) of the first surface.

To provide a magnetic field generating apparatus capable of reducing burden on an operator while reliably preventing an apparatus, a metal object and a precision apparatus attached to or owned by the operator from entering a range where strong magnetic field is generated, and a nuclear magnetic resonance apparatus including the magnetic field generating apparatus.SOLUTION: The magnetic field generating apparatus comprises a stay 14 composed of nonmagnetic materials, axially movable to a storage container 13 in which a superconductor 12 is stored, and respectively comprises: strong magnetic field protection members 16a-16c attached to the stay 14 after the superconductor 12 is magnetized and at least surrounding a space where the intensity of magnetic field generated by the superconductor 12 is first threshold or higher; and weak magnetic field protection members 17a-17c attached to the stay 14 outside the strong magnetic field protection members 16a-16c, and at least surrounding a space where the intensity of magnetic field generated by the superconductor 12 is equal to or higher than second threshold smaller than the first threshold.SELECTED DRAWING: Figure 8

The invention relates to a magnetic mirror dipole field fusion device which comprises an excitation circular ring and a magnetic field compression superconductor. The magnetic field compression superconductor is arranged on the south and north poles of the dipole field, and the rotating shaft is coaxial with the excitation ring. The section of the excitation circular ring made of the normal-temperature material is circular or square, and the section of the excitation circular ring made of the superconducting material can be cylindrical. A gap between the excitation circular ring and the magnetic field compression superconductor is a magnetic mirror area, and the outer side of the excitation circular ring is a fusion area. The magnetic field of the magnetic mirror area is very high, and high-energy helium ions generated by fusion can be reflected, so that fusion ignition is very easy to realize. The magnetic mirror area can reflect all ions, and no plasma exists on the inner side of the excitation ring, so that mechanical supporting and cooling of the excitation ring are easy to realize.

The invention relates to a heavy Fermi material as well as a preparation method and application thereof, belongs to the technical field of heavy Fermi materials, and is used for solving at least one of the problems of many impure phases, poor crystallinity, poor magnetic performance and the like of the heavy Fermi material prepared by the existing method. The invention relates to a heavy Fermi material, the chemical formula of the heavy Fermi material is Ce3PnAs5, and Pn is V, Mn or Cr. The heavy Fermi material prepared by the method has no impure phase and better crystallization property, shows ferromagnetic-like characteristics, has potential application prospects in the aspects of electromagnetic device preparation and the like, and provides a good material basis for regulation and control of quantum critical points, exploration of unconventional superconductors and the like.

The invention discloses suspension model equipment for motion of a planet around the sun, and relates to the field of teaching model equipment. A magnetic field is formed through an orbit, so that a planetary model is suspended on the orbit according to the principle that a superconductor suspends in the magnetic field. Moreover, a metal sheet is arranged in the planet model, the interior of the metal sheet is arranged to be of a hollow structure, and the metal sheet is filled with liquid nitrogen, so that the metal sheet becomes a superconductor under the low-temperature condition, the planet model can be effectively prevented from rotating, and the motion of the planet around the sun can be displayed in a three-dimensional visualization mode. Therefore, the motion state and period between the sun and the planet can be well reflected.

A gas flow meter for all pressures, including fractions of an atmosphere, and for cryogenic temperature systems such as cryomodules for cooling superconducting radio frequency cavities in a particle accelerator. An accurate measurement is critical to determine the quality factor (Q0) of the superconducting cavities. The instrument head, including a superconducting material adjacent to an electric resistance heater, measures gas flow. The power in the heater is increased until the superconductor exhibits ‘normal’ conducting voltage (quench) while an electric current passes through it. The heater power required to drive the superconductor to quench is a function of the gas flow passing the instrument head. Digital control and readout of all critical elements are supplied by a digital control system interfacing to an analogue to digital, digital to analogue (AtoD DtoA) module.

A method for detecting temperature rise inside a superconducting levitation device based on deep learning is provided. An initial vibration acceleration information, an initial temperature rise information, and a vibration acceleration detection information are obtained. Feature extraction is performed on the initial vibration acceleration information to obtain a high-frequency feature parameter set and a low-frequency feature parameter set. Wavelet band energy calculation is performed for the high-frequency feature parameter set and the low-frequency feature parameter set to obtain a wavelet band energy information. The wavelet band energy information and the initial temperature rise information are input into a preset deep learning network for training to obtain an internal temperature rise detection model of the superconducting levitation device. The vibration acceleration detection information is input into the internal temperature rise detection model to obtain an internal temperature rise prediction information to reflect real-time temperature rise of the superconductor.

The invention belongs to the technical field of quantum functional materials, and particularly relates to a medium-entropy carbide superconducting material and a preparation method thereof. The medium-entropy carbide superconductor Ta < 0.25 > Nb < 0.25 > Hf < 0.25 > Zr < 0.25 > C is synthesized through a spark plasma sintering method. The prepared medium-entropy carbide superconductor belongs to a single-phase rock salt face-centered cubic structure (Fm-3m) crystal, and shows type-II superconductivity, and the superconducting transition temperature (Tc) value is 4.9 K. Meanwhile, the medium-entropy carbide superconductor has robustness and stability under extreme acid and alkali conditions, can be used in the fields of electric power communication, transportation, medical treatment, high-energy physics, high-tech equipment, military equipment and the like, not only enriches the research content of the medium / high-entropy superconductor, but also is expected to promote the practical application of the medium / high-entropy superconductor.

A method of forming a superconducting device includes depositing a superconducting metal nitride layer over a substrate in a plasma processing chamber charged with a first inert gas including nitrogen gas and a different second inert gas. The depositing includes sputtering metal from a metal target using the second inert gas, the sputtered metal being provided to the substrate along with a portion of the nitrogen gas.

The invention relates to the technical field of superconductors, in particular to a Tc > 140K superconductor reverse design method and system based on gradient guidance, and the method comprises the steps: obtaining superconductive data, constructing a superconductive data set, obtaining a preliminary data set, carrying out the data cleaning, obtaining a cleaned data set, constructing a superconductive representation matrix, carrying out the training to obtain a training generation model and a training diffusion model, and carrying out the mapping. Performing random disturbance addition for multiple times to obtain a disturbance addition vector, calculating disturbance gradient estimation, updating the low-dimensional potential vector, obtaining an updated potential vector, obtaining a reconstruction sample, performing optimization to obtain a reconstruction optimization sample, performing critical temperature prediction, obtaining a reconstruction temperature and an updated temperature, and calculating a temperature absolute difference value; and obtaining an update temperature sequence, extracting an initial update temperature, determining a target update temperature, and determining a target temperature in the update temperature sequence. According to the method, the design and discovery of the high-critical-temperature superconducting material can be accelerated.

To provide a high-temperature superconductor that can improve the critical current density without a change in the critical temperature by substituting some of Gd constituting a ReBCO-based superconductor with Ho.SOLUTION: A high-temperature superconductor according to an embodiment is a ReBCO-based high-temperature superconductor, represented by ReBa2Cu3O7-δ, where the Re refers to Gd and Ho.SELECTED DRAWING: Figure 1