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157results about "Superconductive properties measurements" patented technology
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Superconducting magnet quenching detection and early warning system and method based on skeleton current
ActiveCN120847694ASuperconductive properties measurementsCurrent/voltage measurementEarly warning systemElement model
The invention discloses a superconducting magnet quench detection early warning system and method based on skeleton current, and relates to the field of superconducting magnet quench detection, and the method comprises the steps: constructing an electrothermal coupling finite element model of a superconducting magnet and a conductive skeleton; simulating different quench events based on the electrothermal coupling finite element model; according to different quench events, quench judgment threshold values and different levels of quench severity index grading threshold values are determined; when the superconducting magnet is out of service, acquiring a skeleton current signal that the current of the superconducting magnet is shunted to the conductive skeleton; based on the skeleton current signal, according to the quench judgment threshold value and the quench severity index grading threshold value, grading early warning and protection response are conducted on the superconducting magnet quench, nondestructive testing can be conducted on the superconducting magnet quench, grading evaluation and optimization protection of the quench severity degree are achieved, and the safety of the superconducting magnet quench is improved. And the cost of the quench monitoring system is reduced.
Owner:SHANGHAI JIAOTONG UNIV
Fusion device high-temperature superconducting magnet quenching detection method based on deep learning
ActiveCN119312020Aaccurate calculationsafe and stable operationSuperconductive properties measurementsNuclear energy generationData setPlasma current
The invention discloses a fusion device high-temperature superconducting magnet quenching detection method based on deep learning, and the method comprises the steps: obtaining a magnet quenching voltage noise signal, a magnet current signal, a plasma current signal and an eddy current signal from the historical operation data of a fusion device, and taking the signals as a data set to train a deep learning model; a magnet current signal, a plasma current signal and an eddy current signal during operation of the device are continuously collected in real time, and a magnet quenching voltage noise signal is calculated in real time by using an offline trained deep learning model; and deducting the magnet quench voltage noise signal calculated in real time from the magnet quench voltage detection signal acquired in real time to obtain a real magnet quench voltage signal, thereby realizing accurate detection of the high-temperature superconducting magnet quench of the fusion device. According to the method, quench of the high-temperature superconducting magnet is detected timely and accurately by means of the strong learning ability of deep learning, and safe and stable operation of the high-temperature superconducting magnet in a fusion device is guaranteed.
Owner:HEFEI INSTITUTE OF PHYSICAL SCIENCE CHINESE ACADEMY OF SCIENCES
Device, system and method for testing critical current of double-sided high-temperature superconducting strip
ActiveCN119269874ASuperconductive properties measurementsMaterial analysis by electric/magnetic meansElectrical resistance and conductanceHigh temperature superconducting
The invention relates to the technical field of critical current testing of superconducting tapes, in particular to a critical current testing device, system and method for a double-sided high-temperature superconducting tape. A critical current testing device for a double-sided high-temperature superconducting tape comprises a low-temperature box body which is provided with an accommodating space, the accommodating space is internally provided with an unwinding roller and a winding roller, the unwinding roller and the winding roller are respectively suitable for winding the double-sided high-temperature superconducting tape to be tested, and the double-sided high-temperature superconducting tape to be tested is provided with a first surface and a second surface which are correspondingly arranged; the first measuring assembly is suitable for measuring critical current and voltage of the first surface of the to-be-measured double-sided high-temperature superconducting tape; and the second measuring assembly is suitable for measuring the critical current and voltage of the second surface of the to-be-measured double-sided high-temperature superconducting tape. The problem that when the double-sided superconducting tape is measured, the lead current of the YBCO1 superconducting layer does not pass through the resistance layer and cannot reach the YBCO2 superconducting layer, the quench of the voltage cannot be detected, and the measurement error of the critical current is caused is solved.
Owner:SONGSHAN LAKE MATERIALS LAB +1
Superconducting magnet coil quenching detection method and related device
PendingCN120779305ASuperconductive properties measurementsCurrent/voltage measurementSuperconducting CoilsInductance
The invention discloses a superconducting magnet coil quenching detection method and a related device, and relates to the technical field of superconducting magnets, and the method comprises the steps: collecting the total voltage of two ends of a superconducting magnet coil and the current of any end of the superconducting magnet coil in real time in the operation process of a superconducting magnet; based on a relation curve that the inductance of the superconducting magnet coil changes along with the current, the resistive voltage in the superconducting magnet coil is determined through the total voltage at the two ends of the superconducting magnet coil and the current at any end of the superconducting magnet coil; when it is detected that the resistive voltage is increased to a voltage threshold value or the continuous increasing duration of the resistive voltage exceeds a duration threshold value, it is judged that the superconducting magnet coil is quenched; through the method, the problems that an existing superconducting magnet quenching detection method is complex and low in detection sensitivity are solved.
Owner:MAIKUN (SUZHOU) ENGINEERING TECHNOLOGY CO LTD
Quench detection method for superconducting coils using a leakage current
ActiveCN119375793BSuperconductive properties measurementsElectric winding testingSuperconducting CoilsHemt circuits
This invention provides a method for detecting quench in a superconducting coil using leakage current, comprising the following steps: Step 1: Determine a first detection connection point on the main superconducting tape adjacent to a first current connection point, wherein the first detection connection point and the first current connection point are equipotential points; Step 2: Determine a second detection connection point on the sampling superconducting tape, wherein the second detection connection point and the second current connection point are equipotential points; Step 3: Connect a leakage current sampling circuit to the first and second detection connection points. If the leakage current sampling circuit detects leakage current, it is determined that quench exists in the main superconducting tape. This invention uses a leakage current sampling circuit to solve the problem of difficulty in sampling the quench voltage of superconducting magnets.
Owner:SHANGHAI JIAOTONG UNIV
Shipborne paleomagnetic laboratory shielding performance detection method and system
PendingCN119902136ASuperconductive properties measurementsMagnetisation measurementsRemanenceMarine engineering
The invention discloses a method and a system for detecting shielding performance of a shipborne paleomagnetic laboratory, and relates to the technical field of paleomagnetic laboratory detection. According to the invention, a plurality of measurement points are arranged in the shipborne paleomagnetic laboratory, so that the magnetic induction intensity data in the shipborne paleomagnetic laboratory can be accurately and fully measured, and the accuracy of subsequent calculation of the internal average residual magnetism and the shielding coefficient of the shipborne paleomagnetic laboratory is improved; the detection accuracy of the shielding performance of the shipborne paleomagnetic laboratory is further improved; the ship navigation state of the ship is continuously adjusted, the operation environment of the shipborne paleomagnetic laboratory is fully considered, and the situation that the shielding performance of the shipborne paleomagnetic laboratory is detected inaccurately due to the navigation uncertainty of the ship and the complex magnetic environment of the ship navigating in the ocean is avoided in a multi-ship navigation state and multi-measurement-point mode. The accuracy of the internal average residual magnetism and the shielding coefficient is improved through the dynamic characteristics of the ship, and the detection accuracy of the shielding performance of the shipborne paleomagnetic laboratory is ensured.
Owner:CSSC HUANGPU WENCHONG SHIPBUILDING CO LTD
Radio frequency superconducting cavity thermal quenching mode online classification method and device based on machine learning, equipment and medium
ActiveCN119150106ANo running time requiredSuperconductive properties measurementsEnsemble learningClassification methodsComputational physics
The invention discloses a machine learning-based radio frequency superconducting cavity thermal quenching mode online classification method, apparatus and device, and a medium. The method comprises the steps of obtaining a cavity voltage Vc and a forward voltage Vf of a radio frequency superconducting cavity; calculating a predicted value rc of the cavity pressure amplitude according to the cavity pressure Vc and the forward voltage Vf, and comparing a deviation e between the predicted value rc and the actually measured cavity pressure amplitude value r; features Qid, Eid and Nsoft are extracted based on the actually measured cavity pressure amplitude value r and the deviation e; the extracted features Qid, Eid and Nsoft are input into a fault diagnosis model, fault classification is achieved, faults comprise non-thermal quench faults and thermal quench faults, and the thermal quench faults comprise conventional thermal quench, thermal quench caused by electric quench and soft quench. Therefore, automatic online classification of the thermal quenching mode can be realized, and second-order high-accuracy fault information feedback is provided for accelerator operators.
Owner:INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
Superconducting motor quench detection method and apparatus based on rotational symmetry of motor
ActiveUS20250341577A1Superconductive properties measurementsCurrent/voltage measurementSuperconducting electric machineElectric machine
The present invention discloses a superconducting motor quench detection method and apparatus based on rotational symmetry of a motor, belonging to the technical field of superconducting motor quench detection. The method includes: acquiring terminal voltages of each group of superconducting magnets in a superconducting motor, where the superconducting motor is pre-divided into at least two unit motors by using the rotational symmetry of the motor, and superconducting magnets located at corresponding positions are selected from the at least two unit motors as a group of superconducting magnets; calculating an absolute value of a terminal voltage difference of each group of superconducting magnets; and judging whether the absolute value exceeds a preset threshold, and if the absolute value exceeds the preset threshold, determining that the superconducting magnets are in a quench state. According to the present invention, induced voltages coupled by the terminal voltages of superconducting magnets are eliminated.
Owner:QINGDAO UNIV
Quenching detection sensor based on high-temperature superconducting material and detection method
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.
Owner:SOUTHWESTERN INST OF PHYSICS
Defect detection device and detection method for high-temperature superconducting strip
PendingCN120143023ASuperconductive properties measurementsSuperconductor elements usageHigh temperature superconductingVoltage source
The high-temperature superconducting tape defect detection device comprises a liquid nitrogen tank and a lifter connected below the bottom of the liquid nitrogen tank, a pay-off wheel and a take-up wheel are arranged on the two opposite sides of the liquid nitrogen tank respectively, and an inverted trapezoidal guide wheel set is arranged between the pay-off wheel and the take-up wheel. A high-temperature superconducting strip is released by the pay-off wheel, is guided downwards by the guide wheel set and then is withdrawn upwards by the take-up wheel, four sets of crimping assemblies are arranged on the material supporting base at intervals in the advancing direction of the high-temperature superconducting strip, and the interiors of the two sets of crimping assemblies close to the outside are jointly connected with a current source through wires capable of making contact with the high-temperature superconducting strip. And the inner part is connected with a voltage source. The critical current value of the high-temperature superconducting long belt is measured by adopting a crimping type four-lead method, so that the internal damage position of the belt is intuitively reflected, accurate searching is facilitated, meanwhile, the surface of the belt is prevented from being polluted, the interior of the belt is prevented from being damaged, the detected long belt can be used for the second time or subjected to a surface enhancement process, the detection efficiency is improved, and the manufacturing cost is reduced.
Owner:西部超导材料科技股份有限公司
Forced flow cooling system for horizontal test of arc-shaped superconducting magnet
ActiveCN120656814ASuperconductive properties measurementsSuperconducting magnets/coilsSuperconducting CoilsMechanical engineering
The invention provides a forced flow cooling system for horizontal testing of an arc-shaped superconducting magnet, and relates to the technical field of superconducting magnet testing devices. The forced flow cooling system for the horizontal test of the arc-shaped superconducting magnet comprises a first transmission pipeline configured to transmit helium; a second transfer line configured to transfer liquid helium; the air inlet pipeline is respectively connected with the first transmission pipeline and the second transmission pipeline and is wound on the arc-shaped superconducting magnet; wherein the helium is used for cooling the arc-shaped superconducting magnet to a first preset temperature under the condition that the first transmission pipeline is communicated with the gas inlet pipeline and the second transmission pipeline is blocked from the gas inlet pipeline; and under the condition that the first transmission pipeline is disconnected from the gas inlet pipeline and the second transmission pipeline is communicated with the gas inlet pipeline, the liquid helium is used for cooling the arc-shaped superconducting magnet at the first preset temperature to a second preset temperature.
Owner:GUOKE ION (HANGZHOU) MEDICAL TECH CO LTD
Temperature-variable superconducting magnet test low-temperature system and method
PendingCN121631730ASuperconductive properties measurementsLighting and heating apparatusTemperature controlSuperconducting Coils
The invention discloses a temperature-variable superconducting magnet low-temperature testing system and method, and relates to the technical field of superconducting magnet low-temperature testing. The system specifically comprises a superconducting magnet circulation loop which is configured to be communicated with a superconducting magnet to be tested to form a closed circulation channel for helium flow; the heat exchanger is arranged in the superconducting magnet circulation loop and is configured to cool helium in the superconducting magnet circulation loop through heat exchange with an external low-temperature medium; the helium circulating pump is arranged in the superconducting magnet circulating loop and is used for driving helium to perform forced flow circulation in the closed-loop circulating channel; the temperature control assembly comprises a heater arranged in the superconducting magnet circulation loop; wherein the flow and the temperature of helium entering the superconducting magnet to be tested are controlled by adjusting the helium circulating pump and the heater. The invention aims to design a test system which does not need an expensive refrigerator, is simple and convenient to operate and can realize accurate control of a wide temperature zone and a forced flow cooling environment.
Owner:HEFEI INSTITUTE OF PHYSICAL SCIENCE CHINESE ACADEMY OF SCIENCES
Superconducting strip critical current anisotropy test sample rod
PendingCN120065085ASuperconductive properties measurementsVoltage/current isolationGear wheelTest sample
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.
Owner:HUAZHONG UNIV OF SCI & TECH +2
Superconducting cable bending test device
ActiveCN119860996ASuperconductive properties measurementsMaterial strength using steady bending forcesCircular discElectric cables
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID CO LTD +1
Multi-field coupling fatigue test device and method for high-temperature superconducting strip
PendingCN121595359ASuperconductive properties measurementsMaterial strength using repeated/pulsating forcesHigh temperature superconductingFatigue testing
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.
Owner:LANZHOU UNIV
A direct-cooling high-temperature superconducting magnet test platform and assembly method
ActiveCN113126009BSimple structurestable structureSuperconductive properties measurementsSuperconducting CoilsHigh temperature superconducting
The invention discloses a direct-cooling high-temperature superconducting magnet test platform and an assembly method, comprising a refrigerator and an external dewar, wherein the refrigerator comprises a main refrigerator and a secondary refrigerator, wherein the main refrigerator and the secondary refrigerator are respectively connected to a radiation-proof cold shield and a high-temperature superconducting magnet winding through a cooling structure, wherein the high-temperature superconducting magnet winding is composed of a plurality of high-temperature superconducting coils, and the high-temperature superconducting magnet winding is connected to a power-on terminal through a high-temperature superconducting current lead. The direct-cooling high-temperature superconducting magnet test platform and the assembly method can test a plurality of large-size high-temperature superconducting coils at a time without multiple disassembly and assembly, and can also perform directional testing on the power-on coil through an active structure such as a current lead sheath quick-plug terminal, which greatly saves the time required for the magnet to reach the excitation condition to evacuate and cool down, and realizes efficient testing, and the test platform is simple in structure, reliable, easy to operate, and maneuverable to use, providing a platform for multi-coil high-temperature superconducting magnet testing.
Owner:XIAN JUNENG SUPERCONDUCTING MAGNET TECH
Non-destructive testing device for critical current of joint-free high-temperature superconducting strip
PendingCN121613379ASuperconductive properties measurementsMagnetic measurement environmental aspectsRotational axisBall bearing
The invention discloses a critical current nondestructive testing device for a joint-free high-temperature superconducting tape. The critical current nondestructive testing device comprises a testing tape reel, a fixing plate, a testing tape reel motor rotating shaft, an air heater, a tension sensor, a wire guide wheel, a magnetizing device, a double-hole Hall sensor, a liquid nitrogen Dewar and the joint-free high-temperature superconducting tape. The test tape reel is used for placing the joint-free high-temperature superconducting tape; the testing tape reel motor rotating shaft is used for connecting the motor and the testing tape reel, and the air heater is used for blow-drying the tape to prevent the surface of the superconducting tape from freezing. The tension sensor is used for carrying out real-time and on-line monitoring on the tension applied to the superconducting tape. The wire guide wheel is of a bearing supporting structure and comprises a built-in deep groove ball bearing or sliding bearing. And the magnetizing device is used for magnetizing the high-temperature superconducting tape. The double-hole Hall sensor can detect magnetic field distribution on the surface of the magnetized strip. The double-hole Hall sensor is provided with a double-hole structure, and the slit strip is detected through the wire passing double holes.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
Methods and systems for superconductor quench detection, prevention, or mitigation
PCT designated stage expiredWO2025122982A1Superconductors/hyperconductorsSuperconductive properties measurementsSoftware engineeringMechanical engineering
Owner:TYPE ONE ENERGY GROUP INC
Quantum device and preparation method thereof
PendingCN120129455ASuperconductive properties measurementsSuperconductor elements usageCoplanar waveguideHemt circuits
The invention provides a quantum device and a preparation method thereof, and the quantum device comprises a superconducting ferromagnet structure which comprises a superconducting layer and a ferromagnet layer disposed on the superconducting layer; and the detector comprises a coplanar waveguide resonator, the coplanar waveguide resonator is in alternating current coupling with the superconducting ferromagnet structure, and the coplanar waveguide resonator is configured to detect the superconducting ferromagnet structure. According to the invention, the circuit quantum electrodynamics is introduced into the research of the superconducting ferromagnet structure, the coupling strength between the superconducting ferromagnet structure and the coplanar waveguide resonator is improved, and the accurate detection of the superconducting ferromagnet structure in the microwave range is realized; the efficiency and speed of quantum information processing are improved by realizing high-efficiency conversion and transmission between the magnetic vibrator and the photons.
Owner:YANGTZE DELTA IND INNOVATION CENT OF QUANTUM SCI & TECH
Superconducting magnet excitation and back field testing device and method
The invention discloses a superconducting magnet excitation and back field testing device and method, and relates to the technical field of superconducting magnet excitation and test.The superconducting magnet excitation and back field testing device comprises a supporting structure and a coil, the supporting structure is internally provided with an excitation cavity and a detection cavity, the excitation cavity is used for arranging a superconducting magnet, and the detection cavity is used for detecting the superconducting magnet; a detection device can be arranged in the detection cavity, the coil is wound outside the supporting structure and surrounds the excitation cavity, the coil can be electrified, and the detection device can detect the intensity of a magnetic field generated by the excited superconducting magnet. And the magnetic field of the superconducting magnet can be detected in a background magnetic field.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
Magnet quenching detection method based on attention mechanism feature fusion
The invention relates to the technical field of magnet quenching detection, and discloses a magnet quenching detection method based on attention mechanism feature fusion, which comprises the following steps: preprocessing existing time sequence data and to-be-detected time sequence data of a superconducting magnet to obtain an existing data signal frame and a to-be-detected data signal frame; extracting time domain features and frequency domain features from the existing data signal frame and the data signal frame to be detected; performing convolutional feature extraction on the existing data signal frame and the data signal frame to be detected by using a convolutional neural network; for an existing data signal frame, splicing the extracted time domain features and frequency domain features with the convolution features, extracting attention weights of the spliced features by using an attention network, and obtaining fusion features by using the extracted attention weights; using a deep neural network as a classifier to carry out quench detection on the fused features to obtain a detection result; training the detection model, and determining an optimal model; and obtaining a detection result of the to-be-detected data signal frame according to the optimal model. Therefore, magnet quenching detection is realized.
Owner:HIWING TECH ACAD OF CASIC
External field critical current test sample rod under axial strain of superconducting tape
PendingCN120065084ASuperconductive properties measurementsMaterial strength using tensile/compressive forcesTest sampleOptical axis
The invention belongs to the field of superconducting material measurement, and discloses an external field critical current test sample rod under axial strain of a superconducting tape, which comprises a mechanical transmission device, a worm vertical to a left-right rotation trapezoidal screw rod, and a worm gear connected with the middle part of the left-right rotation trapezoidal screw rod through an optical axis key; the axial strain loading platform and the nut seat are respectively screwed into a left thread part and a right thread part of the left-handed and right-handed trapezoidal screw rod, the sample holder is supported and fixed through convex parts at two sides of the nut seat, the copper current terminals are respectively fixed at two ends of a platform part of the sample holder, and the strain gauge is used for being fixed on a middle shaft in the middle of a superconducting tape to be tested; and the electric signal transmission device is electrically connected with the strain gauge. According to the invention, the left-handed and right-handed trapezoidal screw rods are driven to rotate, so that the pair of nut seats with opposite threads are linearly opened and closed, the superconducting tape to be measured on the sample holder tape welding platform is driven to generate axial strain, and the critical current of the superconducting tape under the axial strain in a background magnetic field is measured.
Owner:HUAZHONG UNIV OF SCI & TECH +2
CORC-CICC high-temperature superconducting conductor stability evaluation method and related device
PendingCN120686169ASuperconductive properties measurementsElectrical conductorHigh temperature superconducting
The invention discloses a CORC-CICC high-temperature superconducting conductor stability evaluation method and a related device. The method comprises the following steps: acquiring structural information of a CORC-CICC high-temperature superconducting conductor; according to the structural information of the CORC-CICC high-temperature superconducting conductor, determining the shunting temperature, the critical current, the minimum quenching energy and the quenching propagation speed of the CORC-CICC high-temperature superconducting conductor; and evaluating the stability of the CORC-CICC high-temperature superconducting conductor according to the shunting temperature, the critical current, the minimum quenching energy and the quenching propagation velocity of the CORC-CICC high-temperature superconducting conductor, and the method and the related device can evaluate the stability of the CORC-CICC high-temperature superconducting conductor.
Owner:CHINA ELECTRIC POWER RESEARCH INSTITUTE CO LTD +2
Methods and systems for estimating localization lengths in hybrid superconductor-semiconductor quantum devices
Methods and systems for estimating localization lengths in hybrid superconductor-semiconductor quantum devices are described. A method for estimating localization lengths in a hybrid superconductor-semiconductor quantum device includes constructing a statistical model for extracting localization lengths based on an implicit description of nonlocal conductance measurements associated with a physical representation of the hybrid superconductor-semiconductor quantum device. The method further includes, using a processor, estimating the localization lengths in the hybrid superconductor-semiconductor quantum device by a joint prior distribution enforcing smoothness over a function of gate voltages and extracted localization lengths for the hybrid superconductor-semiconductor quantum device.
Owner:MICROSOFT TECHNOLOGY LICENSING LLC
Combined film parameter measurement device, measurement device and regulation and control method
PendingCN120009795ASuperconductive properties measurementsCoupling contact membersMeasurement deviceThin membrane
The invention discloses a combined thin film parameter measurement device, a measurement device and a regulation and control method. The combined thin film parameter measuring device comprises a substrate; the preset doped component content of the combined film is continuously changed from the first end to the second end in a gradient manner along the first direction; the plurality of groups of measuring electrodes are respectively led out from the side edges of the thin film, and the joints of the groups of measuring electrodes and the combined thin film are arranged along the first direction so as to respectively measure parameters corresponding to different doping component areas; the regulation electrode is positioned on the side surface of the combined film; wherein a gap is formed between the combined thin film and the regulation electrode, ionic liquid can be added to the substrate, the ionic liquid at least covers the combined thin film, the regulation electrode and the gap between the combined thin film and the regulation electrode, and the ionic liquid is used for changing the carrier concentration of the combined thin film. According to the method, combined film samples with different components do not need to be frequently prepared, the time consumption of line connection can be remarkably reduced, the manpower and material resource consumption is saved, and the data accuracy and the acquisition efficiency are improved.
Owner:INSTITUTE OF PHYSICS CHINESE ACADEMY OF SCIENCES
Magnetometer for large magnetic moments with strong magnetic anisotropy
ActiveUS12181540B2Superconductive properties measurementsGalvano-magnetic material selectionMagnetic anisotropyElectric machinery
This disclosure presents systems, devices, and methods that use magnetometers to measure large magnetic moments with strong magnetic anisotropy. A torque magnetometer may include an actuator driven by a motor, a load cell coupled to the actuator, a rotatable spool having a platform configured to hold a sample of a superconductor material, where the rotatable spool is coupled to the load cell by a first line, a pulley, and a second line extending between the rotatable spool and a counterweight, where the second line is positioned on the pulley. Movement of the actuator may cause the rotatable spool to rotate an angle of the platform relative to a magnetic field about the rotatable spool, and the load cell is capable of measuring the tension on the first line.
Owner:FLORIDA STATE UNIV RES FOUND INC
Continuous electromagnetic characterization system for long length high-temperature superconductors at low temperature in high background magnetic fields
PCT designated stageWO2025212645A1Superconductive properties measurementsFault locationSensor arrayLiquid state
Techniques for reel-to-reel assessment of a high-temperature superconducting (HTS) tape are provided. The techniques include a cryocooler-powered cryogenic system configured to cool the HTS tape in a background magnetic field. The cryocooler-powered cryogenic system may be free of liquid cryogenic. The cryocooler-powered cryogenic system may include a measurement zone, where the magnetic field is perpendicular to the path of the HTS tape. The techniques may also include a Hall sensor array within the measurement zone. The Hall sensor array may be configured to scan a magnetic field at a surface of the HTS tape to measure a screening-current-induced field and separate it from the background magnetic field. The techniques may also include a data acquisition (DAQ) module operably coupled to the Hall sensor array. The DAQ module may be configured to oversample Hall voltages.
Owner:THE TRUSTEES OF PRINCETON UNIV
A critical property testing device for superconducting tapes in a polygonal mode
ActiveCN114740409BSuperconductive properties measurementsUsing mechanical meansMechanical engineeringVacuum chamber
The present invention discloses a critical property testing device for superconducting tapes in a multi-deformation mode. The device includes: a framework support and a vacuum chamber composed of upper and lower layers, an adjustable tension component passing through the upper and lower layers of the framework support and the vacuum chamber and extending downward to the cryogenic test layer, a tape clamping tooling fixedly connected to the bottom end of the adjustable tension component, and current lead terminals arranged on the superconducting tape to be tested. By dividing the testing device into common parts, non-common parts, fixed structures, and non-fixed structures, the present invention realizes stress adjustment in a multi-deformation mode through the same transmission device, eliminates the interference factors in the superimposed stress by setting an axisymmetric structure and comparing and observing the stress difference between the superconducting tape without loaded current and the superconducting tape with loaded current during the loading process of the critical current of the tape, and improves the accuracy of stress testing.
Owner:CHINA INSTITUTE OF ATOMIC ENERGY
A test device for continuously measuring the angular dependence of the magnetic field in superconducting tapes
ActiveCN115267626BImprove test efficiencySuperconductive properties measurementsSuperconductor elements usageRotational axisAngle dependence
The present invention discloses a testing device for continuously measuring the angle dependence of a superconducting tape magnetic field. The testing device is composed of a transmission device, a conductive device and a basic frame, wherein the transmission device is the core part. The transmission device includes a scale dial, a worm, a worm wheel, a transmission shaft, a first bevel gear, a second bevel gear, a rotating shaft and a rotating plate. The transmission device can realize the rotation of the rotating plate at the bottom of the device at a specific angle by the scale disc at the top of the rotating device. The tape is fixed on the rotating plate and forms a desired angle with the magnetic field as the rotating plate rotates. The present invention energizes the current leads at both ends of the tape, measures the voltage at both ends of the tape, and obtains the critical current of the tape at the angle of the magnetic field according to the U‑I curve.
Owner:HEFEI INSTITUTE OF PHYSICAL SCIENCE CHINESE ACADEMY OF SCIENCES
A six-point roll-to-roll transmission high-temperature superconducting long tape critical current test device and method
The present invention discloses a six-point method roll-to-roll drive type high-temperature superconducting long tape critical current testing device and method, including a testing chamber, a chamber cover and a pay-off chamber. The chamber cover is provided above the testing chamber, and a pay-off chamber is provided at the middle position of the top of the chamber cover. Driving chambers are provided on both sides of the top of the chamber cover. U-shaped frames are provided on both sides of the bottom inside the testing chamber, and baffles are provided on the tops of the U-shaped frames. Pneumatic cylinders are provided inside the two driving chambers, and the output ends of the two pneumatic cylinders respectively extend into the two U-shaped frames. The present invention uses a six-point type test. In the main measurement section, according to the measurement standard of the superconducting tape sample, when the voltage measurement value reaches a cut-off voltage value greater than V C , the current source stops conducting current, and the measurement of this section is completed. In the two sub-measurement sections, the upper limit value of the voltage set artificially is higher than the set multiple of the cut-off voltage value of the above-mentioned main measurement section relative to V C to prevent damage to the sub-measurement sections.
Owner:SHAOYANG UNIV +1