108 results about "Superconducting cavity" patented technology

The invention discloses a preparation method of a copper-niobium-niobium-tin composite superconducting cavity. Comprising the following steps: manufacturing a copper-niobium composite board; manufacturing a half cavity and a beam tube by using a copper-niobium composite plate; manufacturing a copper-niobium composite superconducting cavity by using the half cavity and the beam tube; pretreating the copper-niobium composite superconducting cavity; the method comprises the following steps: plating a niobium-tin thin film on a superconducting cavity by adopting a CVD (Chemical Vapor Deposition) medium-temperature film plating method, wherein film plating materials are Nb and SnCl2, the evaporation temperature is 400-500 DEG C, and the deposition temperature is 700-750 DEG C; brazing a cold chain ring of the superconducting cavity; and carrying out buffer electrochemical polishing and packaging on the Nb3Sn thin film superconducting cavity. According to the Ni3Sn thin film, the surface resistance of the composite superconducting cavity is reduced, the superconducting critical temperature and the critical magnetic field are improved, and a low-temperature refrigerator is used for replacing liquid helium for refrigeration; the cold chain conduction ring braze welding realizes good heat conduction connection between the low-temperature refrigerator and the superconducting cavity.

The invention discloses an online suppression method, device and equipment for an electromechanical coupling effect of a radio frequency superconducting cavity, and a medium. The method comprises the following steps: obtaining an original cavity voltage Vc * and an original forward voltage Vf * of the radio frequency superconducting cavity; carrying out calibration and normalization processing on the original cavity pressure Vc * and the original forward voltage Vf *; the normalized cavity voltage Vc and the forward voltage Vf during electromechanical oscillation are screened out, a differential equation is established, and the dynamic detuning delta f of the radio frequency superconducting cavity during electromechanical oscillation is calculated; based on the normalized cavity pressure Vc and the dynamic detuning delta f, identifying a transfer function of a radio frequency superconducting cavity mechanical mode by using a system identification method; establishing a coupling system characteristic equation according to the transfer function of the cavity mechanical mode, the transfer function of the radio frequency superconducting cavity and the transfer function of the low-level system controller, and solving the characteristic equation to find out stability boundaries under different parameter conditions; and optimizing closed-loop control parameters according to the stability boundary, and realizing online suppression of the electromechanical coupling effect.

The invention discloses a superconductive cavity half-cavity precision stamping automatic demolding mold, a mounting method and a using method. A lower end protruding part of the punch is clamped and fixed between the U-shaped plate and the upper plate; a stamping male die coaxial with the punch is fixed at the lower end of the upper plate; the female die outer edge piece is fixed to the center of the lower plate, the four ball guide columns are fixed to the upper portions of the four corners of the lower plate respectively, and the upper portion of each ball guide column is in sliding connection with the upper plate through a set of ball copper sleeves and ball guide sleeves. The stamping male die directly faces the outer portion of the female die of the female die outer edge piece, the middle of the female die of the female die retreating piece and the central opening of the female die bottom plate. The outer portion of the female die, the middle of the female die and the central opening jointly form the outline of the female die, and the female die outer edge piece, the female die retreating piece and the female die bottom plate are in contact with the stamping male die and the stamping pressing plate together with the niobium plate in the half-cavity stamping process. According to the semi-cavity batch stamping device, automatic material pressing and automatic demolding are achieved, the technical problem that automatic demolding cannot be achieved after stamping is solved, and the semi-cavity batch stamping efficiency and stamping precision are improved.

The invention provides a single / double-module energy-adjustable superconducting electron accelerator device, a medical isotope production system and a medical isotope production method, and the device comprises an injection system which is used for generating an electron beam current with certain energy and current intensity; the acceleration module system comprises single or double parallel acceleration modules, and each acceleration module comprises a superconducting cavity and a low-temperature unit; the low-temperature unit comprises a refrigerator, a high-thermal-conductivity cold chain, and a cold shield and a vacuum shell which sequentially cover the periphery; the radio frequency system is used for feeding microwave power into the superconducting cavity, maintaining the amplitude and phase stability of an electromagnetic field and accurately compensating the frequency deviation of the superconducting cavity; and the electron motion trail control system is used for guiding the electron beam to pass through the acceleration module and the plurality of circulating transmission pipelines with the corner radiuses sequentially enlarged for multiple times. The technical problems that an existing accelerator is limited by serious heating and cannot achieve high-flow-intensity and high-energy operation, a low-temperature cooling system is complex, so that the operation and maintenance cost is high, high energy and high flow intensity cannot be considered at the same time, and medical isotope production is difficult to meet are solved.

The invention discloses a superconducting cavity helium groove machining clamp and a superconducting cavity helium groove machining method. The superconducting cavity helium groove machining clamp comprises a left lower supporting seat, a right lower supporting seat, a left upper pressing plate, a right upper pressing plate and a supporting column. The left lower supporting seat and the right lower supporting seat are oppositely arranged, arc-shaped grooves are formed in the upper end face of the left lower supporting seat and the upper end face of the right lower supporting seat, the left upper pressing plate and the right upper pressing plate are correspondingly arranged over the left lower supporting seat and the right lower supporting seat, the left upper pressing plate is connected with the left lower supporting seat through a screw, and the right upper pressing plate is connected with the right lower supporting seat through a screw. The right upper pressing plate is connected with the right lower supporting seat through a pull rod, arc-shaped pressing grooves matched with the arc-shaped grooves are formed in the lower end face of the left upper pressing plate and the lower end face of the right upper pressing plate, and the supporting column is arranged between the left lower supporting seat and the right lower supporting seat. The tool clamp is clamped and fixed to a platform at a time, whole cavities in the same batch do not need to be dismantled, the product size consistency is improved, corrugated pipes can be better protected, and the size and frequency in the product machining process are easy to guarantee.

A welding tool for an inner conductor and an outer conductor of a radio frequency superconducting cavity comprises an outer welding seam auxiliary tool and an inner welding seam auxiliary tool. The outer welding seam auxiliary tool comprises a limiting pull rod, a first limiting plate and a second limiting plate, the two end parts of the limiting pull rod penetrate through the first limiting plate and the second limiting plate respectively, so that the outer conductor is clamped and fixed; the inner welding seam auxiliary tool comprises a first pressing head and a second pressing head which are arranged oppositely. The first pressure head and the second pressure head are both provided with exhaust holes, an arc-shaped structure matched with the outer conductor is formed on one side, facing the first pressure head, of the second pressure head, and a fixing rod for assembling the inner conductor and the outer conductor into a whole is installed between the first pressure head and the second pressure head. The invention further provides a welding method for the inner conductor and the outer conductor of the radio frequency superconducting cavity. The welding problem of the special structure of the outer conductor is solved, and the welding quality is guaranteed; the thermal deformation of the elliptical curved surface structure with a specific size when the elliptical curved surface structure is welded with the inner conductor is reduced, and the welding precision is ensured.

The invention provides a single-module double-cavity parallel superconducting electron accelerator device, a medical isotope production system and a medical isotope production method, and the device comprises an injection system which is used for generating an electron beam current with certain energy and current intensity; the acceleration module system comprises a low-temperature unit and a superconducting cavity; the low-temperature unit comprises a refrigerator, a high-thermal-conductivity cold chain, and a cold shield and a vacuum shell which sequentially cover the periphery; the refrigerating machine is connected with the superconducting cavity through a high-thermal-conductivity cold chain; the radio frequency system is used for feeding microwave power into each superconducting cavity, maintaining the amplitude and phase stability of an electromagnetic field and accurately compensating the frequency deviation of the superconducting cavity; and the electronic motion trail control system is used for guiding the electronic beam current to pass through the double parallel superconducting cavities and a plurality of circulating transmission pipelines of which the corner radiuses are sequentially enlarged for multiple times. The technical problems that an existing accelerator is limited by serious heating and cannot achieve high-flow-intensity and high-energy operation, a low-temperature cooling system is complex, so that the operation and maintenance cost is high, high energy and high flow intensity cannot be considered at the same time, and medical isotope production is difficult to meet are solved.

The invention provides a method for measuring a half cavity of a cell type radio frequency superconducting cavity, and relates to the technical field of measurement of the half cavity of the superconducting cavity, the half cavity is installed on a predetermined measurement tool to obtain a to-be-tested piece so as to fix the half cavity, and then the to-be-tested piece is installed on a three-coordinate measurement platform to prepare for detection; the three-dimensional standard model of the half cavity is inserted in advance during detection, and a coordinate system of the three-dimensional standard model is adjusted to establish a standard; then, a coordinate system is manually and roughly established by using a half-cavity equator plane and an equator inner circle of a to-be-tested piece, and the specific position of a half cavity is found; a coordinate system is automatically and precisely established by using a half-cavity IRIS plane, an IRIS inner circle and an equator inner circle of a to-be-tested piece, the precisely established coordinate system coincides with a coordinate system of the three-dimensional standard model, finally, the size and form and location tolerance of the half-cavity of the to-be-tested piece are detected, three coordinates are adopted to carry out contact type measurement on the basic size and the inner surface profile of the half-cavity, and the measurement accuracy is improved. And the influence of half-cavity surface reflection and refraction is avoided, so that the measurement precision is improved.

A superconducting cavity beam HOM pipe welding piece welding tool comprises a tool body, a tool pressing plate, a beam pipe positioning assembly and a pull rod. The tool body is in an L shape, the tool pressing plate is vertically arranged along one side of the tool body, so that the tool pressing plate and the tool body form a U-shaped structure, the beam pipe positioning assembly is vertically installed on the tool body and used for fixing a beam pipe welding part to the tool body in the arrangement direction of the tool pressing plate, and the pull rod is installed between the tool pressing plate and the tool body. And the tool pressing plate can enable the welding part of the HOM pipe welding part and the welding part of the beam pipe welding part to abut against each other. The invention further provides a welding method for the superconducting cavity beam HOM pipe welding part. In the welding process, the welding part of the HOM pipe welding part and the welding part of the beam pipe welding part can be effectively positioned, the welding precision is guaranteed, and the welding efficiency is improved.

The invention relates to the technical field of superconducting accelerators, in particular to a solid conduction cooling structure for a superconducting radio frequency cavity. Comprising a double-cell superconducting cavity body, an equator cold ring, a beam tube cold ring and a thermal bridge structure, and through the ingenious design of the equator cold ring, the beam tube cold ring and the thermal bridge structure and the adoption of oxygen-free copper and other materials with good heat conduction performance and mechanical strength, the efficient and uniform cooling effect is achieved, and the service life of the double-cell superconducting cavity is prolonged. Powerful support is provided for miniaturization and industrial application of the radio frequency superconducting technology; according to the invention, stable operation of the superconducting cavity at a proper low temperature can be realized by adopting a commercial refrigerator, a complex thermostat design, an expensive and huge helium liquefaction low-temperature station and a specialized low-temperature station operation and maintenance team are omitted, and the application difficulty of a radio frequency superconducting technology is reduced; the method has natural advantages in miniaturization and industrial application of the radio frequency superconducting technology.

The invention discloses a superconducting cavity niobium-plated three-tin film vacuum evaporation furnace. Wherein the outer vacuum system is communicated with the furnace body and provides a vacuum environment for the hearth; the inner vacuum system is communicated with the superconducting cavity coating chamber, and the inner vacuum system provides a vacuum environment for Ni3Sn coating; a gas interface is arranged between the furnace body and the superconducting cavity coating chamber; the furnace body power regulator is divided into a front furnace door heating area, a rear furnace door heating area, a coating area left heating area and a coating area right heating area of the furnace body for heating and temperature control; in a coating area in the superconducting cavity coating chamber, superconducting cavity thermocouples are installed on six dimensions of the front side, the rear side, the upper side and the lower side through superconducting cavity supports respectively, and the superconducting cavity thermocouples and tin source thermocouples are connected with a temperature control monitoring system. And the temperature control monitoring system and the furnace body power regulator form a coating chamber temperature control system to control and balance the temperature in the superconducting cavity coating chamber. And the temperature deviation of the uniform temperature zone is less than or equal to + / -3 DEG C, so that the equipment meets the requirements of industrial operation stability and reliability.

The application discloses a precision superconducting cavity processing and detecting system and a die forging process, which comprises a turret type die automatic switching device, a die forging equipment, a superconducting cavity special die and a superconducting cavity deformation detecting device; the turret type die automatic switching device is used for carrying the superconducting cavity special die; the die forging equipment is used for die forging a blank placed in the superconducting cavity special die; and the superconducting cavity deformation detecting device is used for detecting the punched superconducting cavity after die forging; the superconducting cavity deformation detecting device comprises a base, a control box is arranged in the base, and a superconducting cavity supporting convex block for placing the punched superconducting cavity is arranged on the base; the superconducting cavity supporting convex block comprises a body, and a first strain detecting ring, a second strain detecting ring, a third strain detecting ring, a fourth strain detecting ring and a fifth strain detecting ring are sequentially arranged on the body. The application has the advantages of improving product quality and reducing production cost.

The invention discloses a radio frequency superconducting material performance testing system and a surface resistance measuring method.The radio frequency superconducting material performance testing system comprises a radio frequency cavity module, a low temperature module and a measuring module, the radio frequency cavity module comprises a mushroom-shaped superconducting cavity, the inner wall of the superconducting cavity is plated with a Ni3tin film, and the inner wall of the superconducting cavity is plated with a Ni3tin film; the low-temperature module is provided with a multi-stage cooling structure and a magnetic shielding shell. The measuring module is used for collecting the sample temperature, the magnetic field, the vacuum degree, the radio frequency power and the direct-current power of the heater. According to the radio frequency superconducting material performance testing system, by optimizing the design of the mushroom-shaped cavity and adopting the Nb3Sn coating technology and the efficient conduction cooling low-temperature module, the dependence of a traditional radio frequency material testing system on a liquid helium low-temperature system is eliminated, a compact testing platform is formed, and high-field and high-resolution measurement of the surface resistance of an SRF material is achieved.

The present invention discloses a method, device, equipment and medium for online classification of thermal quench modes of radio frequency superconducting cavities based on machine learning, including: obtaining the cavity pressure of the radio frequency superconducting cavity; V c and forward voltage V f According to the cavity pressure V c and forward voltage V f , calculate the predicted value of cavity pressure amplitude r c , compare the predicted values r c The measured cavity pressure amplitude r Deviation e ; Based on the measured cavity pressure amplitude value r and deviation e Extract features separately Q id , E id and N soft ; The extracted features Q id , E id and N soft The fault diagnosis model is input to realize fault classification, and the faults include non-thermal quench faults and thermal quench faults. Thermal quench faults include conventional thermal quench, thermal quench caused by electrical quench, and soft quench. Therefore, the present invention can realize automatic online classification of thermal quench modes and provide high-accuracy fault information feedback in seconds for accelerator operators.

The utility model provides a superconducting electron linear accelerator device for isotope production, which comprises an injector, a superconducting acceleration module and an irradiation target area which are arranged in sequence, and the superconducting acceleration module is connected with a low-temperature cooling system, a radio frequency driving system and a control system; the superconducting acceleration module comprises a low-beta-value Ni3Sn superconducting cavity and five standard Ni3Sn superconducting cavity modules, the low-beta-value superconducting cavity is an SRF acceleration cavity of a 2-cell cavity with beta = 0.7, and each standard superconducting cavity module consists of four SRF acceleration cavities of the 2-cell cavity with beta = 1 which are connected in series; and the input end of the standard superconducting cavity module adopts a symmetrical double-input coupler. According to the linear accelerator device provided by the utility model, the Ni3Sn superconducting cavity adopts a 2-cell and double-input coupler structure, so that the power requirement of high-power input coupling can be reduced under high flow intensity, a high-power electron beam is generated at lower cost, and efficient and economic production of isotopes is realized.

The utility model relates to a high-pressure flushing device for a superconducting cavity, which comprises a bearing assembly, a first flushing assembly and a second flushing assembly, the in-place detection assembly is mounted on one side of the bearing assembly; the in-place detection assembly comprises a first lifting linear module, a supporting plate, a floating ring, a first sensor, a probing ring and a second sensor; the flushing assembly is mounted on the other side of the bearing assembly; the flushing assembly comprises a second lifting linear module, a hollow rotating motor, a spraying rod and a water inlet pipe; and the top end of the spraying rod is used for coaxially penetrating through the probing ring. The superconductive cavity high-pressure flushing device is simple in structure and convenient to use, whether a superconductive cavity is installed in place or not is detected through the synergistic effect of the floating ring and the probing ring, the spraying rod stretches into the superconductive cavity and conducts 360-degree rotary flushing, the superconductive cavity high-pressure flushing device can adapt to a high-curvature curved surface and a deep narrow cavity channel of the superconductive cavity, the cleaning coverage rate is greatly increased, and the cleaning efficiency is improved. And residues on the inner wall of the superconducting cavity are effectively and thoroughly removed.

The utility model relates to the technical field of cleaning nozzles, and discloses a superconducting cavity HPR cleaning nozzle installation structure which comprises an installation frame, installation plates are connected to the four corners of one side of the upper surface of the installation frame through bolts, and branch pipes are connected to the upper ends of the installation plates through bolts. The lower end of the branch pipe penetrates through the mounting plate to the outside of the mounting plate and is in bolted connection with a mounting ring, the inner wall of one side of the upper part of the mounting frame is fixedly connected with a mounting turntable, and the upper end of the branch pipe is in bolted connection with a connecting ring. When the superconductive cavity HPR cleaning nozzle mounting structure is used, the positioning ring is in bolted connection with the mounting turntable to determine the position of the spray rod, and the lower end of the spray rod is connected with the rotary joint through the joint, so that the mounting is convenient, and the smooth conveying of cleaning liquid is ensured; extra fixing points are provided for the spraying rod and cooperate with the positioning structure, and the stability of the spraying rod is enhanced.

The invention provides a radio frequency superconducting cavity level temperature test platform and system and a use method thereof, and relates to the field of large-scale superfluid helium low-temperature refrigeration. The platform comprises a horizontal test valve box, a plurality of air return pipelines, a plurality of air inlet pipelines, a negative pressure heat exchanger, a negative pressure protection and safety release integrated device, horizontal test valve box vacuum obtaining equipment, thermostat vacuum obtaining equipment and a displacement pump set. Flanges are arranged on a plurality of air return pipelines and a plurality of air inlet pipelines, so that mechanical connection interfaces are provided for cryostats of different types of radio frequency superconducting cavities. The low-temperature valves, the pressure sensors and the temperature sensors are arranged on the air return pipelines and the air inlet pipelines, so that the low-temperature cooling capacity required by testing can be provided according to the design requirements of the radio frequency superconducting cavity and corresponding design parameters, and the working performance of the radio frequency superconducting cavity under the design working condition can be accurately obtained; and comprehensive design indexes are checked, and high-fidelity experimental data are provided for efficient and stable operation of the superconducting accelerator.

The application discloses a high-order mode coupler based on a double-inhibition structure of a transmission line model and a design method, and belongs to the accelerator physics and superconducting high-frequency technical field.The method comprises the following steps: determining a superconducting cavity base mode frequency, a high-order mode frequency band and an external quality factor Qe requirement; establishing an equivalent transmission line model comprising two parallel resonance base mode inhibition structures; optimizing a transmission curve through a normalized scattering matrix theory; converting the optimized transmission line model into a three-dimensional structure and further optimizing; modeling and calculating the external quality factor Qe in combination with the superconducting cavity; performing secondary electron multiplication effect simulation analysis; performing thermal load analysis by using an iterative process; and finally completing mechanical design.The application adopts the double-inhibition structure, greatly improves the base mode inhibition bandwidth, realizes deep inhibition of the base mode without pre-tuning, significantly reduces the superconducting module integration cost, improves the assembly efficiency and reduces the operation risk.

This invention relates to the field of circulator technology, and discloses a circulator and a quantum computer. The circulator includes multiple superconducting cavities and at least one acoustic wave device. The superconducting cavities are microwave resonant cavities fabricated from superconducting materials. A first acoustic wave device generates acoustic waves, which propagate along a predetermined direction between the first and second superconducting cavities. The first and second superconducting cavities interact optically via the acoustic waves, causing the signal between them to propagate along a target propagation direction. The first and second superconducting cavities can be any two of the multiple superconducting cavities, and the first acoustic wave device is one of at least one acoustic wave device. The circulator provided by this invention does not contain a magnetic field, which can significantly reduce the manufacturing cost of the circulator, thereby reducing the development cost of a superconducting quantum computer.

The invention discloses a self-anti-interference control method, system and device, the method is applied to a superconducting cavity low-level control system, and the method comprises the steps: obtaining an input voltage value and an output voltage value of a superconducting cavity at the current moment; inputting the input voltage value and the output voltage value into a pre-constructed extended state observer so as to predict the uncertain disturbance of the superconducting cavity at the next moment, and obtaining an interference prediction value; obtaining a control signal of the superconducting cavity at the next moment according to the interference predicted value and a pre-constructed error feedback control rate; model parameters are introduced into the extended state observer, so that the prediction burden of the extended state observer is reduced, the prediction precision and response speed of the extended state observer are improved, the real-time performance and accuracy of disturbance estimation of the superconducting cavity low-level control system are improved, and the disturbance estimation accuracy of the superconducting cavity low-level control system is improved. And the control efficiency of the superconducting cavity low-level control system is effectively improved.

The embodiment of the specification discloses a coupling control method, device and equipment of an Xmon type superconducting quantum bit and a medium. The method comprises the following steps: coupling two ends of a half-wavelength superconducting cavity with Xmon type superconducting quantum bits based on capacitance, and embedding a superconducting quantum interference device at a middle position of the half-wavelength superconducting cavity, wherein the distance between the Xmon type superconducting quantum bits is greater than a preset threshold, so that the direct coupling between the Xmon type superconducting quantum bits is lower than a preset influence value; acquiring the frequency of each Xmon type superconducting quantum bit through a reading cavity connected with each Xmon type superconducting quantum bit; adjusting the frequency of an adjustable cavity mode of the half-wavelength superconducting cavity according to a preset magnetic flux applied to the superconducting quantum interference device; and controlling the indirect coupling of the Xmon type superconducting quantum bits by adjusting the frequency difference between the adjustable cavity mode of the half-wavelength superconducting cavity and each Xmon type superconducting quantum bit, so as to realize the indirect coupling or disconnection between the Xmon type superconducting quantum bits.

An HWR015 type superconducting cavity inner conductor end face turning machining method comprises the following steps that centering clamps are placed in the two ends of a workpiece to be machined, and a lathe chuck and a lathe tailstock tip are used for fixing the centering clamps; turning the right end face of the to-be-machined workpiece until the end face of the to-be-machined workpiece is integrally flat, and stopping feeding; turning the left end face of the to-be-machined workpiece, and stopping feeding until the end face of the to-be-machined workpiece is integrally flat; the theoretical removal amount Q1 of the left end face and the theoretical removal amount Q2 of the right end face of the workpiece to be machined are measured and calculated; turning the right end face of the to-be-machined workpiece, and stopping feeding until the feeding amount is consistent with the required feeding amount of the to-be-machined workpiece; turning the left end face of the to-be-machined workpiece, and stopping feeding until the feeding amount is consistent with the required feeding amount of the to-be-machined workpiece; and confirming that the cut removal amount of the end faces of the two sides of the workpiece is consistent with the theoretical removal amount Q1 and Q2, and completing turning. The planeness of the machining end face of the to-be-machined workpiece, the circle run-out of the end and the perpendicularity of the turning end face and the central axis are effectively guaranteed.

This invention discloses a composite superconducting cavity string reinforcing rib and a bidirectional frequency modulation method for the superconducting cavity string. The composite superconducting cavity string reinforcing rib of this invention is characterized by comprising two horizontal beams, two central vertical beams, four edge vertical beams, four connecting pressure plates, and four superconducting cavity lower flanges located in the same plane; a rectangular area is formed between the two horizontal beams by the two central vertical beams; two edge vertical beams are provided on the outer side of each horizontal beam; the four superconducting cavity lower flanges within the rectangular area are respectively connected and fixed to one side by a connecting pressure plate for connecting the superconducting cavity string; both ends of the horizontal beams have raised contact platforms as force points for contacting the end plate of the superconducting cavity liquid helium tank; the outer ends of the edge vertical beams have raised contact platforms as force points for connecting to the end plate of the superconducting cavity liquid helium tank; the superconducting cavity lower flanges have several threaded holes, the inner threaded holes for connection and fixation with the superconducting cavity small bundle tube flange, and the outer threaded holes for connection and fixation with the reinforcing ribs.

The application discloses a three-dimensional scanning-based superconducting cavity welding allowance precision judgment method and system, and the method comprises the following steps: obtaining actual surface point cloud data of a target welding area of a superconducting cavity to be welded based on three-dimensional scanning; the actual surface point cloud data comprises a plurality of measurement points; the actual surface point cloud data is matched with a preset theoretical model imported to obtain a matching result; the preset theoretical model comprises a plurality of corresponding points; based on the obtained matching result, the deviation value between the measurement points and the matched corresponding points is calculated, and a deviation value dataset is obtained; a visual deviation cloud map is generated according to the deviation value dataset; the deviation value dataset and the visual deviation cloud map are output; and qualified judgment is performed based on the deviation value dataset and / or the visual deviation cloud map. The application realizes automatic and digital detection, converts traditional contact measurement depending on manual experience into non-contact precision evaluation based on data driving, and improves detection efficiency and consistency of results.

The invention provides a frequency sweep algorithm-based superconducting cavity parameter on-line rapid measurement method, device and equipment and a storage medium, and relates to the technical field of accelerators, and the method is applied to an upper computer in a frequency sweep algorithm-based superconducting cavity parameter on-line rapid measurement system. The method comprises the following steps: receiving a cavity scanning frequency range, a cavity number of a superconducting cavity and a scanning step length; carrying out frequency sweeping on the superconducting cavity by adopting the determined scanning step length in the scanning frequency range, and receiving a cavity pressure signal which is responded in real time; obtaining the maximum value of the cavity pressure according to the cavity response signal; on the basis of the scanning, the scanning range is reduced, the superconducting cavity to be scanned is finely scanned by adopting a trisection method, a cavity pressure signal responding in real time is received, and the frequency range of the fine scanning is determined by the frequency position corresponding to the maximum cavity pressure searched in the wide-range scanning process; and fitting data points recorded in the fine scanning process to obtain superconducting cavity parameters. According to the invention, the measurement efficiency of superconducting cavity parameters is improved.

The invention discloses a high-order mode coupler based on a transmission line model dual-suppression structure and a design method, and belongs to the technical field of accelerator physics and superconducting high frequency. The method comprises the following steps: determining the fundamental mode frequency, high-order mode frequency band and no-load quality factor Qe requirements of the superconducting cavity; establishing an equivalent transmission line model comprising two parallel resonant fundamental mode suppression structures; optimizing a transmission curve through a normalized scattering matrix theory; converting the optimized transmission line model into a three-dimensional structure and further optimizing the three-dimensional structure; carrying out overall modeling with the superconducting cavity to calculate a no-load quality factor Qe; secondary electron multiplication effect simulation analysis is carried out; carrying out thermal load analysis by adopting an iterative process; and finally, mechanical design is completed. The dual-suppression structure is adopted, the fundamental mode suppression bandwidth is greatly improved, deep suppression of a fundamental mode is achieved, pre-tuning is not needed, the integration cost of the superconducting module is remarkably reduced, the assembly efficiency is improved, and the operation risk is reduced.

The application discloses a high-order mode coupler with double-inhibiting structure and a manufacturing method thereof. The high-order mode coupler comprises an extraction component and a coupling component; the coupling component is provided with a coupling hook for deeply coupling electromagnetic field transmitted by a superconducting cavity and inputting the electromagnetic field to the extraction component; the extraction component is used for extracting the input electromagnetic field to a normal temperature zone; a first coupling capacitor is formed between the lower end of the coupling hook and the tube wall of the superconducting cavity tube for determining the frequency point of the base mode inhibition; a second coupling capacitor is formed between a T-shaped probe and the tube wall of the extraction component for adjusting the bandwidth of the base mode inhibition frequency point; a third coupling capacitor is formed between the bottom end of the inner conductor of the extraction component and the top end of the coupling hook for adjusting the transmission efficiency of electromagnetic field energy; the first coupling capacitor is a first inhibiting structure, and the LC resonant circuit composed of the T-shaped probe and the second coupling capacitor is a second inhibiting structure. The application solves the base mode tuning problem and the heating problem of the high-order mode coupler.

The application relates to the technical field of spectrum measurement, and discloses a method for characterizing the thickness of a superconducting cavity film of an accelerator, which comprises the following steps: focusing a laser pulse on the surface of a superconducting cavity film to be detected to form an excited micro area on the surface of the superconducting cavity film to be detected; performing single-point ablation on the excited micro area by multiple laser pulses, and recording a LIBS spectrum corresponding to each laser pulse; selecting a tracer element for each recorded LIBS spectrum, and extracting to-be-detected characteristic information according to a fingerprint spectrum line of the tracer element; measuring the ablation depth corresponding to each laser pulse; establishing a corresponding relationship between the to-be-detected characteristic information and the ablation depth; and establishing a thickness prediction model, which represents the thickness of the superconducting cavity film to be detected. The application has the technical effect of realizing convenient and nearly nondestructive characterization of the thickness of the superconducting cavity film of the accelerator.

The present invention discloses a radio frequency (RF) superconducting material performance testing system and surface resistance measurement method. The RF superconducting material performance testing system comprises an RF cavity module, a cryogenic module, and a measurement module. The RF cavity module includes a mushroom-shaped superconducting cavity with a niobium-tin thin film coated on its inner wall. The cryogenic module is equipped with a multi-stage cooling structure and a magnetic shielding shell. The measurement module is used to collect sample temperature, magnetic field, vacuum level, RF power, and heater DC power. By optimizing the mushroom-shaped cavity design, utilizing Nb3Sn coating technology, and a cryogenic module with efficient conduction cooling, this RF superconducting material performance testing system eliminates the reliance of traditional RF material testing systems on liquid helium cryogenic systems, creating a compact testing platform that enables high-field and high-resolution measurement of the surface resistance of SRF materials.