16 results about "Electron linear accelerator" patented technology

The application discloses a quality control system and method of a medical electronic linear accelerator, and the quality control system comprises the following: an upper computer, an industrial computer, an MLC positioning accuracy module, a gantry angle detection module, a treatment bed positioning accuracy detection module, an ARM motion control positioning accuracy module and a CBCT motion control positioning accuracy module; the upper computer generates a quality control report according to the detection results collected by the MLC positioning accuracy module, the gantry angle detection module, the treatment bed positioning accuracy detection module, the ARM motion control positioning accuracy module and the CBCT motion control positioning accuracy module. The application can effectively reduce the time required for periodic detection of the medical electronic linear accelerator, reduce the manpower and material resources required in the detection process, realize complete multiple quality control plans, issue a quality control report, and accurately and intuitively express the quality inspection result.

This invention relates to an extreme ultraviolet (EUV) light source device, comprising a seed laser generator, an electron source, an electron linear accelerator, a first modulation section, a first dispersion section, a second modulation section, a second dispersion section, and an amplifier. A first electron beam generated by the electron source is accelerated by the electron linear accelerator to form a second electron beam. The seed laser generator generates a seed laser, and both the seed laser and the second electron beam are injected into the first modulation section to induce a first energy modulation in the second electron beam, resulting in a third electron beam. The first dispersion section compresses the third electron beam to form a fourth electron beam. The second modulation section induces coherent radiation in the fourth electron beam, which is then subjected to a second energy modulation by the coherent radiation to form a fifth electron beam. The second dispersion section compresses the fifth electron beam to form a sixth electron beam. The amplifier causes the sixth electron beam to radiate and emit kilowatt-level EUV light. The EUV light source device of this invention can generate EUV light with an average power in the kilowatt range and has a compact structure.

The invention discloses a klystron residual life prediction system and a klystron residual life prediction method, belongs to the technical field of electron linear accelerators, and aims to solve the problems that no method for predicting the klystron residual life exists, maintenance and replacement are often carried out when the klystron cannot work suddenly, and stocking / replacement of the klystron needs a quite long time, so that the klystron is inconvenient to use. The system comprises a data acquisition unit, a data transmission unit, a data storage unit, a data operation unit and a data output unit. By collecting and analyzing the key operation data of the klystron, the residual life of the klystron can be predicted more accurately, and maintenance or replacement plan errors caused by inaccurate prediction are avoided; by making a maintenance or replacement plan in advance, the shutdown time of equipment caused by sudden failure of the klystron can be shortened, so that economic loss caused by shutdown is reduced, and meanwhile, reasonable spare part inventory management can also avoid extra cost caused by insufficient spare parts or untimely replacement.

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 invention relates to a device for producing radionuclides, in particular diagnostic and therapeutic radionuclides, on the basis of the principle of photo-nuclear radiation, comprising an electron accelerator (1), which generates an electron beam (2) with temporal structural features for the linear electron accelerator (1), a converter target assembly (21), which is arranged between the electron accelerator (1) and the converter target assembly (21), the invention relates to a converter target assembly (21) for generating radionuclides, comprising a converter target (20) for converting the electron beam (2) into bremsstrahlung photons (15), a plurality of production targets (17) irradiated by the bremsstrahlung photons (15) in order to generate the radionuclides, the converter target assembly (21) comprising a sealed housing (9) enclosing a cavity (19) accommodating the converter target (20), comprising an entrance window with a window disk (23) for the electron beam (2) and an exit window for the bremsstrahlung photons (15), comprising cooling medium ports (10) which are part of a cooling circuit (11) for establishing a cooling flow through the cavity (19) in order to cool the converter target (20) and the window disk (23), the converter target (20) comprises a plurality of rotatable converter discs (12), the electron beams (2) are arranged off-center with respect to the respective converter discs (12), and wherein the respective converter discs (12) are designed to rotate during operation of the device such that the converter discs (12) are arranged on the converter target (20) over time. The focus of the electron beam (2) is dispersed onto an annular region (14) of the converter disk (12) in multiple rotations.

The application discloses an output self-correction circuit for a medical electron gun grid power supply, comprising a low-voltage side control unit, an isolation transmission unit, a high-voltage side control unit, a grid power supply and an independent sampling network; the low-voltage side control unit receives a dose rate, an ambient temperature, an external sampling signal and an output voltage feedback signal, generates a corrected reference signal and transmits the corrected reference signal to the high-voltage side control unit through the isolation transmission unit; the high-voltage side control unit outputs a control increment to the grid power supply after F / V conversion of the corrected reference signal, simultaneously receives voltage feedback signals of the grid power supply and the independent sampling network, and transmits the voltage feedback signals to the low-voltage side control unit through the isolation transmission unit; the application provides the grid power supply with output self-correction for a medical electron linear accelerator, realizes long-term stability and parameter consistency of an electron gun emission beam current, does not need manual correction, and greatly improves work efficiency.

A radiation dose rate control method, which relates to the technology of radiation, and an accelerator (100). The control method is used for an electron linear accelerator (100) comprising a microwave source, an electron gun (102) and an accelerating tube (104). The control method comprises: when an electron linear accelerator (100) outputs a beam, monitoring a first event used for indicating a change of a beam output parameter (S610), wherein the beam output parameter comprises a pulse of an electron gun (102) and a microwave power of a microwave source, and the first event is determined by means of radiation protection requirements; and in response to monitoring the first event, cutting off the pulse of the electron gun (102), and switching a first microwave power of the microwave source to a second microwave power, so that the leakage dose rate of a radiation safety boundary is less than or equal to a first preset threshold (S620), wherein the level of dark current in an accelerating tube (104) under the second microwave power is less than or equal to a second preset threshold. Further provided are a radiation dose rate control apparatus, an accelerator (100), and a radiation apparatus.

The application discloses a dose control device and method of a medical electronic linear accelerator, which comprises an electronic pulse generator, a microwave pulse generator, a control computer, a trigger pulse generator, a counting frequency divider, a dose counter, a switch, a first circuit, a second circuit and an ionization chamber; the output end of the trigger pulse generator is in communication connection with the input end of the dose counter through the counting frequency divider, the output end of the dose counter is in communication connection with the input end of the switch, and the output end of the switch is in communication connection with the input end of the electronic pulse generator through the first circuit; the output end of the trigger pulse generator is also in communication connection with the input end of the switch; and the output end of the trigger pulse generator is also in communication connection with the input end of the microwave pulse generator through the second circuit. The application has the advantages of simple structure, high reliability and the ability to realize meticulous, more accurate and more balanced dose distribution.

The application discloses a medical particle accelerator magnet vacuum device and belongs to the technical field of magnet vacuum devices. The medical particle accelerator magnet vacuum device comprises a vacuum cylinder, a vacuum cavity is formed in the inner side of the vacuum cylinder, and a filtering assembly, an electron acceleration tube, a sealing assembly and a movable focusing assembly are sequentially arranged in the inner side of the vacuum cavity. The application solves the problem that the focusing structure of a common electron linear accelerator is a fixed structure and cannot be moved, so that the diameter of a particle beam cannot be controlled and adjusted by adjusting the position of the focusing structure. Moreover, the existing electron beam observation structure cannot obviously and intuitively observe the electron beam. In the application, part of the magnetic field generated by the focusing electromagnetic coil II interferes with the electron beam in the vacuum cavity through the magnetic permeable groove and the matching groove, so that the electron beam is focused. The relative position of the magnetic field and the electron beam is adjusted by adjusting the relative position of the matching groove and the magnetic permeable groove.

The application provides a method for installing solenoid of an electron linear accelerator, which comprises the following steps: setting a front stand; setting a middle stand for installing at least one component of the front part in the rear section and a solenoid focusing assembly, wherein the solenoid focusing assembly is slidably arranged on the middle stand; setting a rear stand for installing an accelerating tube assembly; when replacing the solenoid, removing all the components of the front part on the middle stand and the support seat thereon, moving the solenoid focusing assembly towards the front stand to make the solenoid out of the accelerating tube; assembling a new solenoid into the solenoid focusing assembly and moving the solenoid focusing assembly towards the rear stand to make the solenoid into the accelerating tube; then, assembling the support seat on the middle stand; and installing the removed components on the middle stand and performing system collimation.

The embodiment of the present application provides a mobile flaw detection system, the mobile flaw detection system comprises a track moving device, a driving device and an electron linear accelerator, the track moving device comprises a track and a moving vehicle, the track extends along a first direction, and the track is used for carrying the moving vehicle so that the moving vehicle can move along the first direction; the driving device is arranged on the moving vehicle, the driving device comprises a first driving assembly and a second driving assembly, the second driving assembly is drivingly connected with a driving part of the first driving assembly, so as to drive the second driving assembly to move along a second direction; the electron linear accelerator is drivingly connected with the driving part of the second driving assembly, so as to drive the electron linear accelerator to move along a third direction, and the first direction, the second direction and the third direction intersect with each other. The mobile flaw detection system in the embodiment of the present application realizes the purpose that the electron linear accelerator moves arbitrarily in a three-dimensional space; by adopting the track carrying mode, it is beneficial to install the electron linear accelerator with large size and large weight.

The application discloses a magnetic lens for an electronic linear accelerator and a structure optimization method, and the structure optimization method comprises the following steps: obtaining structure parameters of the magnetic lens; calculating a magnetic field intensity vector of the magnetic lens; obtaining a corresponding relationship between the structure parameters of the magnetic lens and the magnetic field intensity of the magnetic lens by using the magnetic field intensity vector; and optimizing the structure of the magnetic lens according to the corresponding relationship. The application can improve the maximum magnetic field of the magnetic lens, improve the focusing effect of the magnetic lens, reduce the size of an initial beam spot, provide a data basis for product research and development, and reduce the cost of product research and development.

Systems, methods, and apparatus are described for a laser pulse generation system including at least one electron linear accelerator configured to accelerate electrons from an electron source, a first undulator arranged along a first electron beam path and configured to cause electrons moving along the first electron beam path through the first undulator to emit a first electromagnetic emission, an optical cavity at least partially overlapping with the first undulator and configured to confine the first electromagnetic emission within the optical cavity along a first optical path, and a second undulator arranged along a second electron beam path different from the first electron beam path, the second undulator being configured to cause electrons moving along the second electron beam path to emit a second electromagnetic emission.

The invention relates to a target arrangement for generating X-ray radiation, an electron linear accelerator and a fixed anode transmission-type X-ray tube. The invention relates to a target arrangement for generating X-ray radiation, comprising: a heat sink; and-a target element for electron bombardment, said target element being embedded in a cooling body in order to cool the target element and being structurally distinguishable from the cooling body, characterized in that the target element has a subdivided structure that differs from the cylindrical shape.

The invention discloses a shaping collimation structure and an electron linear acceleration device, and relates to the field of electron linear accelerators. The shaping collimator is used for shaping and collimating rays emitted by the ray source assembly; the shaping collimation structure comprises a support and a plurality of collimators, and the plurality of collimators are arranged on the support and distributed around a preset axis; the plurality of collimation parts are enclosed around a preset axis to form a collimation channel, and the collimation channel is used for shaping and collimating rays emitted by the ray source assembly; and the plurality of collimation pieces can move relative to the bracket so as to change the size of the cross section of the collimation channel. By applying the shaping and collimating structure disclosed by the invention, the shape and the size of the section of the ray beam emitted by the collimating channel can be flexibly adjusted, so that the adaptability of the shaping and collimating structure is improved.

The invention discloses an automatic tuning and deploying system and method for a traveling wave accelerating tube, and belongs to the field of electron linear accelerators. The system comprises a motor control box, a motor and motion assembly, a temperature and humidity sensor, a network analyzer and an upper computer; the motor control box accurately controls the displacement of the motor to realize accurate positioning of the piston in the test cavity; the temperature and humidity sensor records parameters in an actual measurement environment, so that subsequent resonant frequency correction is facilitated; the network analyzer displays and records resonance signals and phase information of the coupling cavity and the accelerating cavity when the piston is located at different positions; and the upper computer corrects the resonant frequency in real time, calculates the inter-cavity phase shift and the accumulated phase difference, and graphically displays and stores the data. The system provided by the invention can automatically and accurately complete the processes of cavity positioning, signal acquisition, phase analysis and the like, realizes rapid and automatic tuning and deployment of the traveling wave acceleration structure, is simple and efficient in operation, can effectively reduce manual errors, and improves the precision.