164 results about "Synchrotron radiation" patented technology

The invention relates to a multi-principal element alloy local lattice distortion measurement method based on a synchrotron radiation X-ray atom pair distribution function, which comprises the following steps: preparing an experimental material, and collecting two-dimensional diffraction data by using synchrotron radiation high-energy X-rays; separating local and average structure information through an atom pair distribution function; and verifying local distortion causes by combining structure fitting and DFT supercell relaxation. According to the method, the accuracy of capturing the local distortion of the atomic scale can be improved, the integrity of statistical information of the local structure distortion of the quantitative characterization material can be fully supplemented, and high-precision measurement and quantitative analysis of dynamic distortion can be systematically realized.

The utility model relates to the field of batteries, and discloses a battery in-situ test sample cell, which comprises a first shell and a second shell, a first accommodating cavity with one closed end is arranged in the first shell, the first accommodating cavity is used for accommodating a sample to be tested, and the second shell covers the first shell so that the other end of the first accommodating cavity is closed. The top of the second shell is provided with an observation window, the observation window can observe the to-be-tested sample in the first containing cavity through the observation channel, an annular second containing cavity is formed outside the first containing cavity, and a semiconductor temperature control chip is installed in the second containing cavity. The device can be combined with synchrotron radiation analysis and gas product detection, has a lateral visual observation function, is reasonable in whole structural design and high in compatibility, can stably operate in a temperature range of-20 DEG C to 70 DEG C, and is adaptive to various in-situ characterization platforms.

The invention relates to the technical field of synchrotron radiation experiments, in particular to an XAFS automatic sample changing device integrating light intensity management and an operation method.The XAFS automatic sample changing device integrating light intensity management comprises an optical filter wheel, a sample table and a control assembly, the optical filter wheel and the sample table form an integrated structure used for XAFS experiments, the sample switching process is matched with the incident X-ray light intensity adjusting process, and the XAFS automatic sample changing device integrating light intensity management is achieved. Therefore, light intensity management is realized in an automatic sample changing process; an optical filter wheel capable of automatically switching, a sample table capable of accurately positioning and a temperature monitoring and remote control system cooperating with the sample table are introduced into a synchrotron radiation X-ray optical path, so that the photon flux incident on a sample can be optimized in real time according to the signal state of a detector and the thermal load of an optical filter; the stability, repeatability and safety of an XAFS experiment are remarkably improved while signal saturation and equipment overheating are avoided, so that manual intervention is reduced, the debugging time is shortened, and the operation efficiency of a whole light beam line is improved.

The invention relates to the field of batteries, and discloses a battery in-situ testing device suitable for a wide temperature range, the battery in-situ testing device comprises a first shell and a second shell, the first shell is internally provided with a first accommodating cavity with one closed end, the first accommodating cavity is used for accommodating a to-be-tested sample, the second shell covers the first shell so that the other end of the first accommodating cavity is closed, and the first accommodating cavity is used for accommodating the to-be-tested sample. The top of the second shell is provided with an observation window, the observation window can observe a to-be-tested sample in the first accommodating cavity through the observation channel, an annular second accommodating cavity is arranged outside the first accommodating cavity, a temperature control part is arranged in the second accommodating cavity, and the temperature control part controls the test temperature of the first accommodating cavity based on the Peltier effect. The sample cell provided by the invention is suitable for wide temperature range conditions, can be combined with synchrotron radiation analysis and gas product detection, has a lateral visual observation function, is reasonable in overall structural design and high in compatibility, can stably operate in a temperature range of-20 DEG C to 70 DEG C, and is adaptive to various in-situ characterization platforms.

The utility model discloses an in-situ synchrotron radiation device for testing a core element of a thin film capacitor, and belongs to in-situ synchrotron radiation testing equipment. In order to achieve in-situ synchrotron radiation testing of a core element of the thin-film capacitor, the core element is installed in a containing cavity of a shell, a temperature control mechanism is installed on the shell and adjusts the temperature of the containing cavity of the shell, and a high-voltage polarization power source is connected with the two ends of the core element to apply voltage. The pressure regulating mechanism comprises two pressure regulating plates and a pressure regulating driving assembly, the two pressure regulating plates are respectively mounted on two sides of the core element, and the pressure regulating driving assembly is connected with the two pressure regulating plates and regulates the distance between the two pressure regulating plates; the synchrotron radiation light source and the signal receiving plate are respectively arranged at two sides of the shell, two side walls of the shell are respectively provided with a light hole I, each pressure regulating plate is provided with a light hole II, the synchrotron radiation light source emits x-rays, the x-rays irradiate the core element, and then the x-rays are received by the signal receiving plate. The device is used for realizing the in-situ synchrotron radiation test of the core element.

The invention relates to a micro-channel flow boiling in-situ measurement method, which comprises the following steps of: 1) establishing a micro-channel flow boiling test system (17), and testing to ensure the sealing performance and the stability of the test system; 2) building a synchrotron radiation X-ray imaging system; 3) performing a pre-test to ensure that synchrotron radiation X-rays can penetrate through the micro-channel, pass through the scintillation crystal (3) and the reflector (4) and then are received by the high-speed camera; (4) micro-channel flow boiling tests under different test working conditions are carried out, and after it is monitored that the wall surface temperature reaches an approximate steady state, the synchrotron radiation X-ray imaging system is used for shooting the flow boiling phenomenon in the micro-channel; meanwhile, a temperature and pressure sensor in the micro-channel flow boiling test system is used for collecting wall surface temperature and inlet and outlet pressure, and in-situ measurement results of the wall surface temperature and the inlet and outlet pressure are obtained. Compared with the prior art, the method has the advantages of solving the problem of view angle limitation existing in a micro-channel flow boiling observation means and the like.

The utility model discloses an electrochemical reaction tank for a hard X-ray absorption spectrum in-situ dual-mode test. The electrochemical reaction tank comprises a reaction tank body, a working electrode, a reference electrode and a graphite counter electrode, the front plate is provided with a working electrode window, and the upper plate is provided with a reference electrode hole and a graphite counter electrode hole. The working electrode is arranged at the window of the front plate and is tightly attached to the reaction tank body through a polyimide adhesive tape, and the reference electrode and the graphite counter electrode are arranged on the two sides of the reaction tank body and are respectively connected with an external electrochemical working platform. The distance between the working electrode window and the rear plate is controlled, and the working electrode is coupled with synchrotron radiation X-ray incident light, a fluorescence signal and a transmission signal to form an X-ray dual-mode test channel. The advantages of a synchrotron radiation X-ray absorption spectrum measuring platform are fully utilized, a real in-situ electrochemical detection environment is simulated, and reliable fluorescence and transmission signals are collected at the same time.

The utility model relates to an in-situ synchrotron radiation transmission type XAS battery testing device, which comprises a battery mould, the battery mould comprises a sealing cover, a main shell and a base, the sealing cover comprises a sleeve part inserted into the main shell, a first beryllium window is arranged at the lower end of the sleeve part, the base is fixedly arranged at the lower end of the main shell, and a second beryllium window is arranged in the middle of the base. A sealed space for containing the battery assembly is formed among the sleeve part, the main shell and the base, the upper side of the battery assembly is provided with a negative electrode making contact with the first beryllium window, and the lower side of the battery assembly is provided with a positive electrode making contact with the second beryllium window. And the base is provided with a positive lead connected with the charge-discharge instrument. According to the in-situ synchrotron radiation transmission-type XAS testing device, the combination of an electrochemical performance test and an in-situ synchrotron radiation transmission-type XAS test is realized, and the negative lead and the positive lead are respectively connected to the limiting flange part at the upper end of the sealing cover and the base, so that the sealing performance of an internal electrochemical cell cannot be damaged.

The invention relates to the technical field of spectral measurement and analysis, and discloses an in-situ cell for rapid and continuous synchrotron radiation X-ray absorption spectrum measurement, the in-situ cell comprises a housing 1, one side of the housing 1 is provided with two through holes, and a counter electrode and a reference electrode are respectively fixed in the two through holes; the first shell and the second shell are correspondingly arranged, and square optical windows are arranged in the center of the second shell and the center of the first shell; the first shell and the second shell are each provided with a hole channel, the two hole channels are located on the two sides of the square optical window respectively, and a working electrode is fixedly arranged between the second shell and the first shell. The in-situ synchrotron radiation X-ray absorption spectrum measuring device is suitable for in-situ synchrotron radiation X-ray absorption spectrum measurement in a time-resolved energy dispersion / transmission mode, and through real-time supply and circular flow of the electrolyte on the surface of the working electrode, the uniformity of the X-ray penetrating through a solution layer is ensured, the elimination of product gas is accelerated, the influence of solution disturbance on a test signal is reduced, and the test stability is improved.

The application discloses a high-frequency shielding bellows and a synchrotron radiation accelerator with the same, which comprises a bellows outer tube extending along a first direction; a shielding tube arranged on the radially inner side of the bellows outer tube and comprising two beam flow pipes extending along the first direction and arranged at intervals in the first direction, and the opposite ends of the two beam flow pipes are fixed with the bellows outer tube respectively; and a sliding unit comprising a sliding piece extending along the first direction, the sliding piece being a conductive piece, and the two ends of the sliding piece are configured to be always slidably attached to the beam flow pipe on the same side along the first direction. According to the high-frequency shielding bellows, when the electron beam flows, a continuous mirror wall current path can be formed, good electrical contact is maintained, high-order mode leakage and electron beam instability are effectively inhibited, and the heating phenomenon caused by the excessive wall resistance of the bellows outer tube can be avoided, so that the reliability of the high-frequency shielding bellows is significantly improved.

The invention belongs to the technical field of synchrotron radiation light sources, and discloses a serial impact magnet device which comprises a shell assembly, a positive pulse electrode, a negative pulse electrode and a strip magnet. The shell assembly comprises a shell body and a side end cover which are detachably connected, and a magnetic core space is formed between the shell body and the side end cover. The positive pulse electrodes extend into the magnetic core space and are arranged at intervals. The negative pulse electrodes extend into the magnetic core space and are arranged opposite to the positive pulse electrodes, and the multiple negative pulse electrodes are arranged at intervals. The strip magnets are arranged in the magnetic core space, the strip magnets are connected between every two adjacent positive pulse electrodes, the strip magnets are connected between every two adjacent negative pulse electrodes, and the two strip magnets are spaced from each other to form a magnetic field space. The electron beam current can be transmitted in the magnetic field space. The tandem impact magnet device can improve the compact degree and the vacuum degree, facilitates the assembly of an internal structure, and can meet the injection requirements of electron beams of a synchrotron radiation light source.

The invention discloses a seawater environment biaxial mechanical loading device based on synchrotron radiation X-ray diffraction, and belongs to the technical field of material testing in a seawater environment. Comprising a ray generator, and a slit, a mechanical loading device and a detector are sequentially arranged along a light path of the ray generator; a seawater environment box is arranged in the center of the mechanical loading device, and a three-dimensional adjusting platform is arranged below the mechanical loading device; by adopting the structure, in-situ characterization and analysis of corrosion product evolution at the crack are realized under the near-service working condition of a complex stress state and a seawater corrosion environment, and a technical support is provided for revealing a microcrack corrosion failure mechanism of a marine material under the near-service working condition.

The invention belongs to the technical field of micro-nano processing, and particularly relates to a Pt-HSQ-based high-resolution X-ray Fresnel zone plate and a preparation method thereof. According to the X-ray Fresnel zone plate, a Pt-HSQ metal-inorganic material system is adopted, a diffraction structure with a large aspect ratio and Pt material quasi-periodic dense stripes specially needed by an X-ray zone plate lens is formed through electron beam lithography and an ALD process, and diffraction focusing from a soft X-ray wave band to a hard X-ray wave band and imaging with an amplification function are achieved. The wave zone plate has excellent mechanical stability, and the irradiation resistance and morphology retentivity of the wave zone plate under high-energy irradiation are remarkably improved. And high-resolution X-ray focusing elements with different energy wavebands and different focal lengths can be prepared according to geometric design and material selection of the wave zone plate. The lens is suitable for microscopic imaging, coherent diffraction imaging, X-ray spectrum, nanometer detection and other scenes of a synchrotron radiation or off-line laboratory X-ray light source, and has wide popularization value and application prospect.

This application relates to the field of lasers and discloses a reflector module, a synchrotron radiation device, and a free-electron laser device. The module includes a mirror body, a cooling component, and a heating component. The cooling component is connected to the mirror body and disposed on a first surface, used to reduce the temperature of the reflecting surface. The heating component is connected to the cooling component and used to compensate for the temperature of the reflecting surface. The heating component includes a heat-conducting block and a heating plate. This application utilizes a heat-conducting block connected to the cooling component and protruding from the reflecting surface along a third direction. A heating plate is disposed on the surface of the heat-conducting block facing the mirror body along a second direction. The heating component provides localized temperature compensation for the reflecting surface, which, combined with the uniform cooling of the cooling component, effectively reduces the localized high thermal gradient and non-uniform thermal expansion deformation of the reflecting surface caused by changes in the beam position.

The utility model discloses a groove cutting type absorber for composite use conditions of synchrotron radiation beam lines, which is characterized by comprising an absorber main body, a knife edge flange and a leading-out water pipe, one end of the absorber main body is connected with the inner side of the knife edge flange, and the other end is provided with a lighting surface; a cooling water channel is formed in the absorber main body and used for being communicated with a cooling water inlet and outlet channel in the knife edge flange, and a water inlet pipe and a water outlet pipe of the leading-out water pipe are connected with ports of the cooling water inlet and outlet channel on the outer side of the knife edge flange respectively and form a cooling water circulation channel with the cooling water channel in the absorber main body; the lighting surface is a sectional inclined surface and comprises a plurality of inclined surfaces which are connected in sequence and have different included angles with the synchrotron radiation light along the optical axis direction; the switching direction of the absorber main body is perpendicular to the beam direction of the synchrotron radiation light, and the lighting surface is parallel to the switching direction and is used for enabling the slopes to light simultaneously when the absorber main body is switched into a light path. The absorber can better bear high heat load.

The application relates to an in-situ XAFS reaction cell for a photocatalytic reaction and a use method, and belongs to the technical field of material characterization. The in-situ XAFS reaction cell for the photocatalytic reaction is used for gas-solid in-situ X-ray absorption fine structure spectrum, and the in-situ XAFS reaction cell comprises a reaction cell body and a top plate; the reaction cell body is installed on the top plate, sample windows and two light path windows are arranged on the reaction cell body; the sample windows are used for placing samples to be tested, wherein the first light path window is used for transmitting a catalytic light source, and the second light path window is used for transmitting X-rays. The in-situ XAFS reaction cell can well adapt to the needs of gas-solid in-situ X-ray absorption fine structure spectrum testing, simultaneously collect transmission and fluorescence signals and be applied to an in-situ photocatalytic reaction system, breaks through the limitation of existing offline testing, and widens the application of a synchrotron radiation X-ray absorption fine structure spectrum technology in gas-solid phase photocatalytic reaction research.

The invention discloses a natural gas hydrate CT image threshold segmentation method and a storage medium, and belongs to the technical field of natural gas hydrate detection.The method comprises the steps that S1, a natural gas hydrate sample image obtained through synchrotron radiation CT scanning is obtained, the image is preprocessed, and a central area image is obtained; s2, performing edge recognition on the preprocessed central region image by using a convolutional neural network and combining a Sobel operator to obtain an edge feature matrix; s3, clustering the edge feature matrix by adopting a KMeans clustering algorithm, and determining gray boundary values of the solid particles and the methane bubbles; s4, removing gray scale parts of solid particles and methane bubbles in the image according to the gray scale boundary value, and performing maximum and minimum normalization processing on the residual gray scale values of water and hydrates to obtain a gray scale probability density; and S5, drawing a normalized gray probability density map according to the gray probability densities of all the images, and determining a threshold segmentation range of the hydrate according to the probability density peak displacement. The method can automatically extract the hydrate threshold range, and improves the segmentation precision.

The invention discloses a synchrotron radiation hard X-ray electron coupling nanoscale high spatial resolution detection method. The method comprises the following steps: 1) selecting synchrotron radiation hard X-rays as a light source; selecting a matched light source energy interval according to the material and thickness of the sample; 2) according to the selected synchrotron radiation hard X-ray energy, selecting a point spread function with high quantum efficiency, a small point spread function and a narrow emission electron spectrum, and calculating a corresponding photocathode material and thickness; 3) detecting the sample by using the light source and the photocathode determined in the above step to obtain a synchrotron radiation hard X-ray transmission image carrying sample structure information, and incidence the synchrotron radiation hard X-ray transmission image on the photocathode; the photocathode emits electrons under the action of incident photons, converts an X-ray transmission signal into an electronic signal, inputs the electronic signal into the electronic imaging system for focusing, amplifying and imaging, and inputs the electronic signal into the imaging recording system; and 4) obtaining a detection result of the sample according to the image recorded by the imaging recording system.

The invention discloses a focusing method for synchrotron radiation X-ray nanometer coaxial holographic imaging, and belongs to the technical field of coaxial holography. The method realizes integrated control of optical path equipment through an EPICS, and comprises the following steps: building an optical path, initializing positions of a sample and a detector, and connecting a linear displacement table and the detector into an EPICS control system; a displacement table and a detector are synchronously controlled in real time through an EPICS to collect a hologram of a standard resolution target, and an optimal reconstruction distance is determined through automatic continuous equivalent distance scanning and an image definition recognition function; calculating an actual object-source distance and a geophysical prospecting distance by using the equivalent distance and the magnification; in the verification link, the hologram is recollected by adjusting the position of the sample or the detector, so that the imaging definition under different magnifications is ensured. According to the invention, the data acquisition and data processing speed, the focusing precision and the imaging quality in the focusing process are obviously improved, and the method is suitable for nanoscale microstructure research in the fields of material science, life science and the like.

The present invention discloses a serial crystallography experimental device based on conveyor belt technology. The device comprises a goniometer head, a base film, and a crystallization plate storage tray. The bottom end of the goniometer head is provided with a goniometer head groove for coupling with the goniometer head base on a synchrotron beamline station. The top end of the goniometer head is provided with two goniometer head support rods for coupling with bearing short rods, and a goniometer head waste liquid tank for collecting waste liquid after X-ray irradiation. The base film is coupled to the crystallization plate storage tray for supporting and flipping the crystallization plate storage tray. During the experiment, the crystallization plate storage tray, equipped with a sitting drop in situ crystallization plate, is coupled to the base film. The low background scattering film on the back of the sitting drop in situ crystallization plate is connected to the bearing short rod via an adhesive film to form a conveyor belt film. Driven by a motor, the bearing short rod tears off the conveyor belt film during sample delivery to the goniometer head and performs diffraction data acquisition. Waste sample droplets are squeezed out and flow down the goniometer head support rods into the waste liquid tank.

The application provides an ADC resolution optimization method of a synchrotron radiation device controller, which comprises the following steps: establishing an ADC resolution optimization system of the synchrotron radiation device controller on an FPGA chip of the synchrotron radiation device controller; defining a desired signal-to-noise ratio variable of the ADC resolution optimization system, and then solving a controller parameter; obtaining a transfer function from an external disturbance signal to an error from the ADC resolution optimization system of the synchrotron radiation device controller, and minimizing an H2 norm of the transfer function from the external disturbance signal to the error by optimizing the controller parameter; and taking a sampling rate of ADC data obtained by the FPGA as a control variable to control, so as to realize direct control of the ADC resolution and noise reduction control. The application also provides a corresponding ADC resolution optimization system. The ADC resolution optimization method of the synchrotron radiation device controller can effectively improve the ADC resolution, and the hardware does not need to be changed, so that the cost is reduced.

The invention discloses a tension-torsion multi-axial fatigue experiment device and method based on synchrotron radiation and neutrons. The experimental device comprises a base, a lower cavity, an acrylic / aluminum alloy projection window, an upper cavity, a supporting rod, a supporting plate, a hydraulic actuator, an upper connecting rod, a load sensor, an upper clamp, a multi-axial fatigue sample, a lower clamp, an angle sensor, a lower connecting rod, a torsion servo motor, a motor controller, an advanced light source receiver, an advanced light source entrance slit and the like. And performing macroscopic three-dimensional damage distribution characterization and microstructure evolution and damage evolution process experiments in the sample by penetrating the metal sample through X-rays and neutron beams. The method provides direct and reliable experimental data support for establishing a multi-axial fatigue theoretical model, revealing a material failure mechanism and engineering structure anti-fatigue design.

The application relates to a thermal barrier coating thermodynamic coupling field synchrotron radiation in-situ characterization device, which comprises a base and a stretcher, a heating device, a cooling device and a powder feeding device arranged on the base, the stretcher is used for applying a tensile load to a sample, the heating device is used for heating the sample, the cooling device is used for cooling the back surface of the sample, so that the back surface temperature of the sample is lower than the front surface temperature of the sample, and the inside of the sample has a temperature gradient; and the powder feeding device is used for providing powder to the sample, so that the sample is in a corrosion state of the powder. The thermal barrier coating thermodynamic coupling field synchrotron radiation in-situ characterization device can simultaneously simulate the high temperature, thermal gradient, tensile load and corrosion service environment of the thermal barrier coating, and is very close to the real service environment.

This invention provides a crystallization plate suitable for in-situ X-ray diffraction of biomolecules, comprising: a body and multiple crystallization units formed within the body; each crystallization unit includes a through-hole and a frustum-shaped sample slot support within the through-hole; the lower bottom surface of the frustum-shaped sample slot support is connected to the lower bottom surface of the through-hole, and the upper bottom surface of the frustum-shaped sample slot support is located between the upper top surface and the lower bottom surface of the through-hole; the side surface of the frustum-shaped sample slot support and the side surface of the through-hole form a crystallization buffer bath. The crystallization plate of this invention is applicable to in-situ testing of biomolecular crystals, and features simple operation, good compatibility, high efficiency, and low cost. It can greatly facilitate the rapid collection of single-crystal diffraction data or drug screening at synchrotron radiation crystallography beamlines under room temperature in-situ conditions.

The invention discloses a compact synchrotron radiation X-ray CT (Computed Tomography) imaging sample table, which comprises a circular rotary table, and a first horizontal displacement table and a second horizontal displacement table which are eccentrically arranged on the circular rotary table, and a circular table concentric with the circular rotary table is fixed above the displacement tables and is used for bearing a sample. An adapter plate with an eccentric hole is arranged between the first horizontal displacement table and the second horizontal displacement table, and the projection range of the displacement tables and the driving mechanism thereof in the plane of the circular rotary table is minimized by adjusting the adapter plate. Through the collaborative design of eccentric arrangement of the displacement table, centering compensation of the adapter plate and tightly-attached built-in motor, the overall radial projection of the displacement table and the driving mechanism is completely contained in the projection range of the circular rotary table, the problem that the installation distance of a detector is too long due to outward protruding of the motor of a traditional sample table is solved, the size limitation is broken through, and the detection precision is improved. The diameter of the circular turntable is obviously reduced, the structure is compact, the geometric magnification and the photon collection efficiency are improved, and the higher imaging resolution is obtained.

The invention discloses a crystal orientation detection method and a related device, and relates to the technical field of crystal detection. The method comprises the following steps: irradiating a to-be-detected area of a to-be-detected sample by using rays generated by a synchrotron radiation light source; controlling the to-be-detected sample to rotate at a preset interval, and determining a diffraction vector of the diffracted light corresponding to each rotation angle in the sample coordinate system based on the transmitted light spot position and the diffracted light spot position respectively corresponding to the projection light and the diffracted light of the to-be-detected area to the ray at each rotation angle collected by the detector; and according to a preset crystal face index corresponding to the at least one rotation angle and the diffraction vector, determining an expression representing a conversion relationship between the sample coordinate system and the crystal coordinate system, and taking the expression as the crystal orientation of the to-be-detected sample. By rotating the sample to be detected, the crystal face detection blind area is reduced, and the crystal face indexes and the diffraction vectors of the multiple crystal faces are combined to jointly determine the conversion relation between the sample coordinate system and the crystal coordinate system, so that the accuracy of crystal orientation is improved.

The invention belongs to the technical field of biological sample experiments, and particularly relates to a synchrotron radiation infrared spectrum miniature vacuum device for biological sample experiments, which comprises a vacuumizing mechanism and a sealing cover, the vacuumizing mechanism comprises a tray, a sealing box, a support pad, a gas pipe, a miniature nitrogen cylinder, a gas flow controller, a miniature vacuum pump and a control valve, a sealing box is arranged at the top of the tray, a supporting pad is arranged at the bottom of an inner cavity of the sealing box, the left side and the right side of the sealing box are communicated with air pipes, and the outer end of the air pipe on the right side is connected with a miniature nitrogen cylinder. Or the sealing box is slowly filled with the nitrogen in the micro nitrogen cylinder, so that the sealing box is filled with the nitrogen, the synchrotron radiation infrared spectrum test can be conveniently carried out, result bias is avoided, a treatment mode can be selected according to requirements, and the application range is expanded.

The invention provides an adjustable tapering undulator and device based on beat frequency superposition and a method for broadening a spectrum, and is applied to the technical field of synchrotron radiation and the technical field of free electron laser. The undulator comprises a first magnetic array structure which comprises a plurality of groups of first permanent magnet units and is used for generating a first magnetic field; the second magnetic array structure comprises a plurality of groups of second permanent magnet units and is used for generating a second magnetic field; the phase shift driving structure is used for responding to a target superposed magnetic field after the beat frequency superposition of the first magnetic field and the second magnetic field, and determining the beat frequency magnetic period length of the target superposed magnetic field according to the first magnetic period length and the second magnetic period length; and according to the tapering requirement of the undulator, determining a target phase shift from a target beat frequency envelope constructed based on the attribute parameters of the adjustable tapering undulator and the beat frequency magnetic period length, and driving the phase shift driving structure to enable the first magnetic array structure and / or the second magnetic array structure to translate along the advancing direction of the electron beam.

The utility model belongs to the technical field of synchrotron X -ray absorption spectrum test, concretely is a kind of synchrotron X -ray absorption spectrum liquid sample temperature control test cell, including the upper layer heating pool body, upper layer gasket, upper layer cover plate, film, lower layer cover plate, lower layer gasket, lower layer heating pool body that are sealed connection in turn, the utility model can accurately control the thickness and temperature of liquid sample;Conical frustum's observation window is set in the both ends of test cell, supports transmission mode and fluorescence mode test;Different temperature liquid medium is realized to the accurate temperature control of sample by annular flow channel circulation;Diamond window is embedded in the center of cover plate, liquid sample is directly dropped on diamond surface, diamond window can guarantee the controllable thickness of sample liquid layer in the temperature change / heating process being tested.The utility model has important significance to the structure change of liquid sample under different temperature conditions, reaction kinetics and catalytic mechanism.

This invention discloses a high-precision white light adjustable aperture device for various operating conditions. It is characterized by comprising two absorber assemblies, each with an absorber assembly attitude adjustment mechanism, a two-dimensional precision displacement system, and a two-dimensional precision displacement system adjustment mechanism located below it. The upstream and downstream absorber assemblies are used to receive synchrotron radiation and adjust its exit angle. The two-dimensional precision displacement system adjustment mechanism is used to adjust the attitude and height of the two-dimensional precision displacement system. The two-dimensional precision displacement system is used to control the horizontal and vertical displacement of the absorber assembly. The absorber assembly attitude adjustment mechanism is used to adjust the attitude of the absorber assembly. This invention can simultaneously receive multiple types of synchrotron radiation, achieving the function of using a single adjustable aperture device to handle multiple different operating conditions within the limited space of the front-end area.