35 results about "Beam energy" patented technology

This invention discloses an energy homogenization control system for multimode fiber laser lenses, relating to the field of high-power multimode fiber laser technology. The invention achieves online monitoring of the beam spot behind the lens through a beam sampling unit and an acquisition unit, quantifies the energy distribution uniformity through a uniformity evaluation unit, generates adjustment commands through a control decision unit combining feedforward and feedback strategies, actively regulates the beam energy distribution through a homogenization execution unit, and finally ensures the safe and stable operation of the system through a safety protection unit. This achieves closed-loop homogenization control of the beam energy distribution during multimode fiber laser processing, improving the stability and consistency of processing quality, reducing processing defects caused by beam fluctuations, and enhancing anomaly identification and safety protection capabilities.

This invention relates to the field of seismic resistance technology for spatial frame structures, and discloses a method for determining the energy dissipation mechanism of a steel-concrete composite column-composite beam spatial frame. The energy dissipation mechanism includes steel beams, steel-concrete composite columns, and reinforced concrete slabs. The steel beams are welded and fixed to the steel-concrete composite columns via reinforcing rings, and the steel beams are fixedly connected to the reinforced concrete slabs via studs. Tie bars are provided at the ends of the steel-concrete composite columns. The ratio of the flexural bearing capacity of the steel beams to that of the steel-concrete composite columns is within the range of 0.42 to 1.05. By introducing the ductile damage parameter of the steel, combined with the inter-story drift angle, cumulative energy dissipation, beam-column energy dissipation ratio curve, and finite element calculation results of stiffness damage of the spatial frame, the energy dissipation characteristics and energy dissipation mechanism type of the structure are determined. This invention aims to solve the technical problems in the prior art where the steel-concrete composite columns do not form sufficient compression-bending hinges for energy dissipation during seismic resistance, easily leading to collapse, and the technical problems of using beam energy dissipation mechanisms in seismic design while rarely considering column energy dissipation.

This invention belongs to the field of semiconductor material design, specifically relating to a method for designing a semiconductor selective intervention smart screening agent. The method includes: constructing an intervention matrix using optical fibers to establish a multi-dimensional channel that integrates detection signal transmission, high-energy beam guidance, and screening agent delivery; designing a photoresponsive smart screening agent and pre-setting its phase transition and chemical reaction logic based on defect characteristics; real-time acquisition of micro / nano morphology and electric field data of the chip surface to map a dynamic defect probability heatmap; and extracting heatmap features based on a deep learning model to determine the corresponding screening agent flow rate, beam energy, and irradiation time in real time. This invention, through an integrated sensing and intervention architecture, achieves in-situ real-time intervention during the manufacturing process, breaking through physical limits of precision, enhancing technical robustness, and improving semiconductor device yield.

The utility model discloses a kind of detection equipment of industrial electron irradiation accelerator beam parameter, including irradiation box, scanning magnet and target, the scanning magnet is arranged in the beam entrance of the irradiation box;The target includes support and target material placed in the hollow position of support, the support is arranged at the beam outlet of the irradiation box, the target material is located in the middle of the support, ensure that the target material and beam coaxial line.The utility model simplifies the operation of detecting the beam parameter of industrial electron irradiation accelerator, and can carry out the detection of beam energy dispersion, effectively speed up the debugging progress of accelerator.

This invention discloses a space non-cooperative target anti-disturbance positioning method and device, belonging to the field of space target optical positioning technology. The method includes generating multiple positioning sub-beams and a reference beam; applying different modulation parameters to the positioning sub-beams and the reference beam to obtain multiple sets of signal beams; converging the multiple sets of signal beams on the plane where the space target is located to form a probe light field; acquiring the echo signals generated by the space target through diffuse reflection of the multiple sets of signal beams, and demodulating them according to the modulation parameters to obtain the light intensity values ​​of each positioning sub-beam and each reference beam; normalizing the light intensity values ​​of each positioning sub-beam and the reference beam to obtain a normalized light intensity vector; and establishing a geometric mapping relationship between the normalized light intensity vector and the target position based on the normalized light intensity vector and the beam energy distribution model, and calculating the relative position of the space target in a two-dimensional coordinate system.

This invention discloses a multi-beam transmissive and reflective integrated metasurface beamforming method and system, comprising: determining a target radiation pattern and converting it into a target mask; initializing metasurface units based on the principle of equal distribution of radiated power to obtain initial weights for transmission and reflection; obtaining a normalized three-dimensional radiation pattern of the units, mapping the initial weights to generate transmission and reflection radiation patterns; applying amplitude constraints to the radiation pattern using the target mask to obtain an ideal transmissive and reflective radiation pattern; obtaining reconstructed transmissive and reflective weights through inverse mapping and amplitude limiting, and outputting physical control commands after iterative correction. This invention solves the technical defects of difficult precise allocation of multi-beam energy, slow convergence speed of weight mapping, and difficulty in obtaining optimal physical control commands, achieving high-precision and flexible control of transmissive and reflective energy in the entire space, enhancing the convergence stability in the three-dimensional radiation pattern reconstruction process, and improving the automation and intelligence level of metasurface physical control command generation.

A substrate processing system includes a processing chamber, a substrate holder configured to hold and rotate a substrate about an axis perpendicular to a working surface of the substrate; an electron emitter adapted to emit a first electron beam directed at a first surface of a peripheral region of the substrate, the first electron beam having a first beam energy and a first beam current sufficient to vaporize material from the first surface of the peripheral region of the substrate; an airflow system configured to direct a flow of gas across the working surface of the substrate; and an exhaust system configured to collect the gas comprising the material vaporized from the peripheral region.

A high-quality beam-shaping metasurface device for high-power laser processing belongs to the fields of optics and electromagnetic wave absorption. This invention includes a substrate and an asymmetric Fabry-Perot cavity; artificial micro / nano units include H-shaped, I-shaped, double-rod, double-elliptical, or V-shaped structures. The asymmetric Fabry-Perot cavity is a three-layer composite structure of "metasurface structure layer - dielectric spacer layer - metal," achieving the device's preset low light absorption function through resonant modulation; the metasurface structure layer consists of multiple subwavelength artificial micro / nano units arranged periodically or aperiodically for controlling the transmitted wavefront. This invention achieves customized beam shaping based on topology-optimized artificial micro / nano structure units, and enhances the low absorption capability of the metasurface device based on asymmetric Fabry-Perot cavity structure optimization. This invention maintains high optical efficiency and robustness under high power density conditions, achieving high-precision control of beam energy distribution, phase, and wavefront, enabling customized laser processing.

The present invention relates to a charged particle beam therapy system comprising: a patient unit (10); an accelerator unit (20) configured to accelerate charged particles; and a beam transport system (30) configured to guide a particle beam having an energy (Ej) between 40 and 450 MeV / u along a corresponding beam trajectory (40e) centered on a central trajectory (40m) to a target (11) located within the patient unit (10), wherein the beam transport system (30) comprises: a bending unit (33) having a gap (33g) between the poles (33p) of a fixed magnetic field dipole, the bending unit being configured to receive and bend the central trajectory (40m) in a bending plane (Y, Z). The beam transport system (30) further comprises an upstream stairer (35u) located upstream of the bending unit (33) and configured to deflect the beam trajectory (40e) from the central trajectory (40m) in a bending plane (Y, Z). The magnitude of the uniform magnetic field (B35) in the upstream stearer (35u) can be controlled to change the entry position (Yij) and entry angle (θ33i) of the beam trajectory at the bending unit entrance (33i) according to the beam energy (Ej) of the particle beam.

The application relates to the technical field of laser welding methods, and provides a laser pressure welding method, which comprises the following steps: superimposing or butting the edges of a first metal workpiece and the edges of a second metal workpiece, so that the edges of the first metal workpiece and the edges of the second metal workpiece form a V-shaped structure; arranging a laser source opposite the abutting position of the V-shaped structure, so that a laser beam is incident on the abutting position of the V-shaped structure; and performing laser welding edge pressing on the abutting position of the V-shaped structure along the extension direction of the superimposition or butt joint of the first metal workpiece and the second metal workpiece. The laser pressure welding method has the advantages that, during welding, the laser beam can be directly incident on the welding area, the light does not need to be reflected on the surface of the metal workpiece, the energy attenuation of the laser beam is avoided, the energy utilization rate is improved, the polarization state of the laser beam and the reflection performance of the metal workpiece are not required, and the universality of the laser pressure welding method is improved.

This invention discloses a magnetically coupled broadband piezoelectric energy harvesting device, belonging to the field of piezoelectric material energy harvesting control. The device includes: an upper base plate, an elastic film, a polyvinylidene fluoride (PVDF) piezoelectric film, a permanent magnet, an L-shaped cantilever beam piezoelectric vibrator, and a lower base plate. The elastic film is adhered to the outer wall of the concentrically mounted upper and lower base plates. The PVDF piezoelectric film is adhered to the outer side of the elastic film. The IS pole of the permanent magnet is fixed to the upper base plate, and the N pole of the permanent magnet II is fixed to the lower base plate. One end of the L-shaped cantilever beam is fixed to the lower base plate, and the other end is fixed to the permanent magnet III. Four sets of piezoelectric plates are symmetrically adhered to both sides of the fixed end and the cantilever end of the L-shaped cantilever beam. The N pole of the permanent magnet III faces upward and the S pole faces downward, the purpose of which is to make the magnetic poles of permanent magnets I and II repel each other with the permanent magnet III, generating a nonlinear magnetic repulsion force. This invention solves the problem of the narrow resonant frequency band of current linear cantilever beam energy harvesting devices and achieves multi-directional energy harvesting through a cylindrical elastic film.

This invention discloses an angle-prior-assisted intelligent metasurface phase coding design method for two-dimensional DOA estimation. The method includes: constructing a system model for two-dimensional DOA estimation with a single receiving channel on the intelligent metasurface; deriving the explicit relationship between the CRB of the two-dimensional DOA estimation parameters and the phase coding matrix; utilizing the prior range information of the target two-dimensional angle, constructing a phase coding matrix optimization problem with a unit modulus constraint, aiming to minimize the average CRB; and efficiently solving this non-convex problem using the Riemannian manifold optimization algorithm to obtain the optimal phase coding matrix. This invention directly links the coding design to the theoretical performance lower bound. By optimizing the coding to focus beam energy in the target prior angle region, it significantly improves the accuracy of two-dimensional DOA estimation for azimuth and elevation angles within the angle prior range, reduces the required measurement overhead, and exhibits good robustness under one-bit phase coding.

This invention discloses a dual-laser-beam diamond synchronous polishing device and method, relating to the field of semiconductor material laser processing technology. The device includes: a laser generator for generating pulsed laser light; a homogenization and shaping unit for homogenizing and shaping the pulsed laser light to obtain a square-topped laser spot; a multi-path processing unit for dividing the homogenized and modulated pulsed laser light into two sub-pulse laser beams with different energy ratios and different incident angles on the diamond surface; and a three-dimensional motion platform for carrying the diamond and controlling the relative motion between the diamond and the two sub-pulse laser beams. The laser spots of the two sub-pulse laser beams overlap on the diamond surface along the scanning path. Based on a set scanning speed and scanning line spacing, the diamond is scanned and polished according to the scanning path. This method achieves simultaneous generation and removal of graphitization using a single-source dual-beam system, reducing the number of scans, lowering processing time, and improving processing quality.

The utility model discloses electron beam energy test aluminum pile frock applies in aluminum pile technical field, including base and compression mechanism, the top of base is opened with recess, the recess is placed with top plate in the inside, the bottom of top plate and recess are fixed with fixed spring through spring fixing piece peg joint, the bottom of top plate and recess are installed with damper, the top of base is placed with four guide seat, the top of guide seat is opened with sliding slot, the top of sliding slot is penetrated with the screw rod of welding with base and is provided, the surface screw thread connection of screw rod has the nut, the top of guide seat is installed with positioning rod. Can possess interval adjustment function, simple and convenient operation is applicable to the positioning of different aluminum sheet of a plurality of specifications, and stability and flexibility are good, can possess the ejection function simultaneously, and personnel is convenient to the aluminum sheet of bottom layer and is taken, improves personnel's work efficiency, and practicality is high.

The application belongs to the technical field of ultrasonic scalpel, and particularly relates to a long-distance type composite structure ultrasonic scalpel center rod. The application comprises a scalpel main body. The application is applied to single-hole supplementary surgery, adopts a long-distance type composite structure center rod, and is used for reducing indexes according to the difference in the length of the center rod. The stress elimination structure, longitudinal wave transmission structure, stress concentration structure, anti-overflow amplification structure, energy transition structure, amplitude quality balance structure, middle section anti-overflow structure, tail section anti-overflow structure, tail section anti-overflow structure, transverse wave control structure, end transition zone and high amplitude output structure can realize the effect that the energy of the front end center beam of the long-distance type composite structure center rod working surface is reduced by 8-12 dB than that of the rear end beam, so that the center static impedance is greatly reduced, the tissue is instantaneously dehydrated and coagulated, and the specification of the ultrasonic scalpel long single hole and robot surgery in the domestic and international markets is filled.

The application discloses a new energy vehicle modular anti-collision beam energy-absorbing structure in the technical field of automobile body structure, and relates to the technical field of automobile body structure, and comprises an anti-collision beam and energy-absorbing assemblies installed on the two sides of the anti-collision beam, wherein the energy-absorbing assemblies are installed on longitudinal beams of the new energy vehicle, the energy-absorbing assemblies comprise a first energy-absorbing bin, a second energy-absorbing bin and a third energy-absorbing bin, the first energy-absorbing bin, the second energy-absorbing bin and the third energy-absorbing bin are fixed and installed in sequence, the first energy-absorbing bin is fixed and installed with the side wall of the anti-collision beam, the third energy-absorbing bin is installed on the longitudinal beams of the new energy vehicle through an installation assembly, and the first energy-absorbing bin, the second energy-absorbing bin and the third energy-absorbing bin are provided with a collapse guide groove, a double-layer guide structure inside and outside the second energy-absorbing bin and a three-stage series energy-absorbing structure, so that the energy-absorbing assemblies can be guided to collapse regularly and orderly along a preset path, and the energy-absorbing bins can be prevented from being twisted, laterally bent, folded out of order and broken.

The application discloses a kind of laser beam energy distribution self-adapting modeling method and system, belong to intelligent laser processing and digital twin field.The method is extracted by laser focal plane heat flux density distribution data processing, feature vector describing beam energy distribution characteristics;Optimal energy distribution model is intelligently recommended using random forest machine learning algorithm to analyze the classification rule of feature vector;Based on Levenberg-Marquardt optimization algorithm, the model parameters are accurately fitted;The beam model is compiled as a heat source model and loaded into the simulation platform for execution, and the model is verified and continuously optimized through virtual-real data comparison.The application realizes the adaptive construction and optimization of laser processing beam model, and provides a high-precision model basis for intelligent manufacturing.

The present application relates to the technical field of food irradiation sterilization, and particularly relates to a uniform irradiation equipment for food irradiation sterilization, which comprises: an irradiation treatment module, which comprises an irradiation generating assembly for generating an electron beam, a titanium window for leading out the electron beam, an infrared heating lamp array for compensating for energy attenuation of the electron beam, and a nozzle group for air flow; a transmission module, which comprises a conveyor belt for providing support force to food, and a lifting support connected with the conveyor belt for adjusting a vertical distance between the titanium window and the conveyor belt; a temperature acquisition module for acquiring an actual scanning width of the electron beam, a first temperature value of the titanium window, and a second temperature value of a surface of a package of the food; and a control module for determining the vertical distance according to the actual scanning width, determining a heating temperature for the package of the food according to the first temperature value and the second temperature value, and determining a compensating air flow applied to air on a path of the electron beam according to the second temperature value. The present application improves uniformity of an irradiation dose for food.

The utility model provides a liquid irradiation container adaptive to multi-model electron accelerator equipment, and belongs to the technical field of irradiation equipment. Comprising a reactor platform, detachable channel baffles are arranged on the upper plane of the reactor platform, an irradiation channel is formed between the two detachable channel baffles, and the width of the irradiation channel is changed by changing the positions of the detachable channel baffles; the left end of the reactor platform is fixedly connected with a communicating vessel water inlet tank, and a height adjusting baffle is arranged at the joint of the communicating vessel water inlet tank and the reactor platform so as to change the layer thickness of liquid in the irradiation channel; a water inlet tank width adjusting baffle is arranged in the communicating vessel water inlet tank, so that the effective use width of the communicating vessel water inlet tank corresponds to the width of the irradiation channel; the right end of the reactor platform is fixedly connected with a communicating vessel water outlet groove. According to the utility model, through the design of the adjustable liquid layer thickness and the detachable side plates, the problems of poor suitability, non-uniform irradiation and inconvenient maintenance in the prior art are solved, and the electron beam energy utilization efficiency and irradiation uniformity are improved.

This document provides a system / technique for facilitating charged particle counting via a non-back-side thinning integrating detector and beam energy quantization. In various embodiments, the system can access an energy-integrated image of a specimen scanned by a charged particle microscope equipped with a non-back-side thinning integrating detector. In various aspects, the system can count how many charged particle events are represented by the corresponding pixels of the energy-integrated image based on rounding the cumulative charged particle energy intensity indicated by each pixel cluster to the nearest integer multiple of the beam energy of the charged particle microscope.

The application discloses a beam energy reduction device for ion implantation and relates to the field of beam energy reduction. The beam energy reduction device for ion implantation comprises a transition frame, a wedge-shaped energy reducer, a beam measurement transmission line, a beam detection system, a connecting frame, an adjusting part, a monitoring device and a control part. The beam energy reduction device for ion implantation is designed with a wedge-shaped energy reducer with a right-angled triangle cross section, which is installed at the bottom of the output end of an analyzing magnet. The energy reducer realizes passive correction of the energy dispersive beam through the thickness gradient of the energy reducer. The ions with higher energy are weakly deflected due to the dispersion effect of the magnet, can pass through the thicker area of the energy reducer, and have more energy loss. The ions with lower energy have a larger deflection amplitude and only pass through the thinner area, so that the energy loss is less. The process can effectively compress the original energy distribution range of the beam, and significantly improve the energy uniformity and monodispersity of the extracted beam.

This invention belongs to the field of diffuser sheets for HUD display systems, and particularly relates to a fabrication apparatus and method for a uniform holographic diffuser sheet. The fabrication apparatus includes a 325nm He-Cd laser, a dual-beam superposition exposure optical path, a 4F spatial filtering system, and a photolithography receiving device. The dual-beam superposition exposure optical path includes a laser beam expander, a beam splitter, a reflector, and a source diffuser. The laser beam expander expands the ultraviolet laser beam, which is then split by the beam splitter to obtain two beams of equal energy. The reflector then illuminates the same position on the same surface of the source diffuser. The 4F spatial filtering system receives the scattered light emitted from the source diffuser and performs spectral filtering. The filtered scattered light is then illuminated by the photolithography receiving device. This invention can manufacture holographic diffusers with a uniformly distributed scattered light field, improving display quality and the energy utilization rate of the HUD system.

Embodiments of the present application provide a scanning imaging method and system based on intelligent beam modulation mode, and relate to the technical field of artificial intelligence and radiation imaging. The method comprises: acquiring at least one of structure feature prior information and motion feature prior information of an object to be imaged; acquiring a pre-constructed joint evaluation criterion, the joint evaluation criterion being used for jointly evaluating the influence degree of at least two of beam timing feature, beam spatial distribution feature and beam energy spectrum feature on scanning imaging; inputting at least one of the structure feature prior information and the motion feature prior information into a pre-trained decision model, taking the joint evaluation criterion as a reward function of the decision model, processing the input by the decision model, and outputting a beam modulation strategy, wherein the beam modulation strategy comprises at least two of beam timing modulation information, beam spatial modulation information and beam energy spectrum modulation information; generating a ray beam based on the beam modulation strategy, and performing scanning imaging on the object to be imaged by using the ray beam.

A filter for radiation therapy, and other applications, is disclosed. The filter comprises a base and columns of varying heights extending from one face of the base. The column heights are determined by simulating the change in energy distribution of radiation passing through the filter and updating the column heights so as to more accurately match the desired output beam energy distribution. The method of filter design employs an inner loop of faster, but less accurate calculations and an outer loop of slower but more accurate calculations. The column heights for the filter are the last calculated values or the ones which produce the simulated output beam energy distribution which most closely matches the desired output beam energy distribution. The filter can be used in a radiation beam apparatus to treat a patient more quickly.

The present application relates to a kind of pulse gamma ray beam energy selection imaging device.The technical problem that the present pulse gamma ray beam imaging energy resolution is lower, and it is difficult to realize the gamma ray imaging of specific energy point is solved.The device of the present application includes gamma ray source, radiation conversion target, electronic energy selection system and optical imaging system;Radiation conversion target is arranged on the exit path of gamma ray source;Electronic energy selection system includes angle limiter, first di-magnet, energy limiter and second di-magnet;Angle limiter is arranged at the entrance of first di-magnet;The position of radiation conversion target and energy limiter is mirror image symmetry with the radial midplane of first di-magnet as symmetry surface;First di-magnet and second di-magnet are rotationally symmetric with the radial center line of energy limiter as axis;Compton scattering electron beam is sequentially through angle limiter, first di-magnet, energy limiter and second di-magnet, then enters optical imaging system and is imaged.

The application discloses a laser capable of outputting multiple beams of same energy and same light spot, which comprises a laser generating device capable of emitting laser outwardly, a beam expander arranged on the path of the laser emitted outwardly by the laser generating device, a transverse light path formed along the X-axis direction after the laser passes through the beam expander, n first beam splitters capable of reflecting and transmitting laser arranged at intervals on the transverse light path, n longitudinal light paths formed along the Y-axis direction after the laser is reflected at each first beam splitter, and a second beam splitter on each longitudinal light path arranged staggeredly with the second beam splitters on other longitudinal light paths, and the laser further comprises a diaphragm arranged at intervals at the output end position of each longitudinal light path. The application aims at overcoming the shortcomings of the prior art and providing a laser capable of outputting multiple beams of same energy and same light spot.

This application relates to an electron linear acceleration and irradiation method based on a solid-state power source, comprising: the extracted electron beam passes through the guiding and focusing elements in the beam transmission system and reaches the irradiation area; along this path, key parameters of the electron beam are monitored in real time using a beam diagnostic device, including at least beam energy, current intensity, and beam spot position information; the material to be irradiated is placed in the irradiation area and receives scanning irradiation from the electron beam; simultaneously, dose monitoring sensors deployed in the irradiation area or within the material are used to acquire absorbed dose rate or cumulative dose distribution information in real time; throughout the acceleration and irradiation process, the central controller synchronously records timestamp-correlated historical data of beam parameters, power source adjustment commands, dose monitoring data, and material identification information to obtain a complete and traceable electron beam irradiation process archive.

The present application belongs to the technical field of laser processing, and particularly relates to a transparent material ultrafast laser welding method and system based on femtosecond pulse injection and spatiotemporal synergistic optimization of local energy deposition. The method divides the femtosecond laser meeting the welding requirements into two beams of femtosecond laser with controllable energy ratio, one of which is used as local control light for welding, and the other is expanded into picosecond laser as welding light; the relative time delay of the two beams is adjusted and spatial coincidence is realized, so that the two beams are focused on the same welding area of the sample, and then laser scanning welding is carried out. The system comprises a femtosecond laser, a light splitting device, a light path collimation device, a time domain pulse shaping device, a time delay adjustment device, a beam combining device and a laser welding platform. The present application can significantly improve the welding quality and precision, and the strength of the formed welding product can reach 51MPa, which is at the world leading level. At the same time, the laser welding platform can monitor the welding process in real time, facilitate immediate adjustment of welding parameters for optimization, and improve applicability.

This invention belongs to the field of tea processing technology, specifically relating to a broadband electron beam photo-induced method for enhancing the freshness of tea and reducing pesticide residues. The method includes the following steps: Step 1, drying and spreading: Selecting primary processed tea leaves (moisture content of 30% to 35%) as raw material and drying them to control the moisture content within the range of 5% to 12%; Step 2, broadband electron beam irradiation treatment: Spreading the tea leaves evenly in an irradiation container and irradiating them with a broadband electron beam. The electron beam energy range is 0.5 MeV to 10 MeV, the beam current density is 1 mA / cm² to 50 mA / cm², and the irradiation dose is 2 kGy to 15 kGy; Step 3, post-irradiation treatment: Performing appropriate aging treatment on the irradiated tea leaves at an aging temperature of 20℃ to 40℃ for 24 to 72 hours; Step 4, sealing and packaging the aged tea leaves to obtain the finished tea product. This invention has the advantage of significantly increasing the amino acid content in tea.