29 results about "Ion accelerators" patented technology

A gas separation device for separating and containing various types of gases from a collection chamber based on different atomic masses is disclosed. The chamber is connected to an ion diverter by a valve that, when opened, allows various types of gases to migrate from the collection chamber to an ionizer in which the gases are ionized. The ionized gas is accelerated by the ion accelerator and distributed into the ion deflector. The ion deflector includes a magnetic field within a channel defined by a pair of split-pole magnets. The trajectory of the ions is based on the ion mass of the separated ions. A plurality of collectors are located at different locations on the exit side of the ion deflector for receiving different ions moving along respective trajectories.

This invention relates to the field of ion accelerator cooling technology, and more particularly to a directional cooling device for the high heat load region of an ion accelerator. The device includes a fixed tube, a connecting tube, and a cooling tube. The fixed tube is connected to the outlet end of the ion accelerator vacuum pipe, and the connecting tube is connected to the fixed tube. The cooling tube forms a spiral structure and is fitted onto the outer circumference of the connecting tube. A cooling medium flows inside the cooling tube. The cooling tube includes a first spiral section near the fixed tube and a second spiral section away from the fixed tube. The pitch of the first spiral section is smaller than the pitch of the second spiral section. This invention achieves segmented enhanced cooling in the high heat load region of the ion accelerator through a variable pitch cooling tube. The densely pitched first spiral section enhances high-temperature heat dissipation, while the loosely pitched second spiral section reduces flow resistance, significantly improving the cooling efficiency and maintenance convenience of the ion accelerator cooling device. It achieves directional enhanced cooling for high heat load regions such as the analytical magnet front-end pipe and the accelerator tube outlet, avoiding beam thermal distortion.

The application discloses a preparation method of a high-gain photoelectric detector and relates to the technical field of photoelectric detectors.The application comprises the following steps: S1, structure design: according to the application scene requirement and working environment of the detector, an avalanche photodiode is prepared by selecting a corresponding photoelectric material; S2, wafer preparation: a semiconductor wafer is cleaned by using ultrasonic cleaning agent and chemical solution; S3, material processing: a doping operation is performed, ions containing phosphorus and boron elements are injected into semiconductor material by using an ion accelerator; S4, gain optimization: a circuit is optimized by using Cascode technology, and the circuits of two transistors are connected; and S5, packaging integration: a prepared chip is packaged into a shell; by optimizing the circuit of the semiconductor by using the Cascode technology, the bias voltage of the circuit, the configuration of the gain circuit and external signal processing are adjusted, the gain of the photoelectric detector can be improved, the influence on the output impedance is reduced, and therefore the high-frequency performance and the linearity of the overall circuit are improved.

The mass spectrometer includes a storage device and an analyzer. The analyzer includes a mirror, an accelerator that receives ions from the storage device and pulses them onto one of the mirrors, causing the ions to reflect back and forth in a first dimension between the mirrors as the ions drift in the drift dimension, a reflector that reflects the ions in the drift dimension, a detector, and control circuitry that activates the reflector to make multiple passes along the drift dimension and deactivates one of the reflectors so that the ions pass to the detector and can be detected, the timing of the reflector activation and deactivation being such that only ions within a first range of mass-to-charge ratios undergo the same number of passes in the drift dimension at any one time that they are detected by the detector. The control circuitry synchronizes the time of pulses from the storage device with the time of pulses from the ion accelerator so that only ions having a mass-to-charge ratio within the first range are pulsed onto one of the mirrors by the accelerator.

The present invention relates to a constant-temperature cooling water system for cold capacity compensation of a heavy ion accelerator, comprising: deionized water passing through various systems of the accelerator enters an open water tank; the deionized water flowing out of the open water tank enters a first heat exchanger; a portion of the deionized water flowing out of the first heat exchanger enters a first cooling tower; the remaining portion enters a first water distributor after temperature and pressure testing; the deionized water flowing out of the first cooling tower enters a second heat exchanger; the deionized water flowing out of the second heat exchanger enters a chiller for cooling; the deionized water passing through the chiller passes through a second water distributor, a second heat exchanger, and a first heat exchanger in sequence before entering the first water distributor. The system, based on various physical experiments, such as the power and heat generation of various systems in an ion accelerator, diurnal and seasonal variations, and the cooling effect of the cooling tower, modifies the current cooling water system of a heavy ion accelerator to address the issues of cold capacity and control accuracy of the cooling water system of the heavy ion accelerator.

The application relates to an ion accelerator standardized power supply controller and a dynamic local reconfigurable method thereof, which comprises a main plate, a standardized self-defined interface, a main control plate interface and a main control plate; the main plate is provided with a communication interface for communication between the power supply controller and other devices; the standardized self-defined interface is used for connecting the main plate with different function sub-plates, WR sub-plates and power supply modules; the main control plate interface is used for collecting all controllable signals of the main plate to the main control plate; the main control plate is provided with an ARM processor and an FPGA; the ARM processor is configured with an embedded EPICS application program for reading and writing the FPGA and directly publishing related variables in the main control plate into standard EPICS supported PV variables to communicate with an upper computer; the FPGA is configured with a modular bottom layer regulator framework, and the monitoring and control of main circuits of different types of accelerator power supplies are realized by dynamically and locally reconfiguring corresponding modules. The application can be widely applied in the field of ion accelerators.

A beam accelerator system comprises an ion accelerator that generates a high-energy ion beam, a low-pressure chamber, an anode adjacent and fluidly connected to the low-pressure chamber, a plasma window adjacent and fluidly connected to the anode, and a cathode housing block adjacent and fluidly connected to the plasma window. The plasma window comprises a plurality of cooling plates, each cooling plate comprising an aperture that is aligned with an aperture in one or more adjacent cooling plate to form a plasma channel. The cathode housing block comprises a cathode target region and a cooling portion. The cooling portion comprises a fluid inlet, a fluid outlet, a cooling channel fluidly coupling the fluid inlet and the fluid outlet, and an opening adjacent to the plasma window and aligned with a longitudinal axis of the plasma channel.

The invention relates to the technical field of ion accelerators, in particular to an accelerator fault self-recovery method, an ion accelerator and a readable storage medium, and the method comprises the steps: obtaining a working environment signal, and detecting whether an abnormal state exists or not according to the working environment signal; when the abnormal state exists, determining an abnormal state type and an abnormal state module according to the working environment signal; reading an abnormal state type, and adjusting the working environment signal in the abnormal state module to an abnormal adjustment value according to the abnormal state type; an abnormal state module is restarted, and when an abnormal state does not exist after the corresponding abnormal state module is restarted, a working environment signal in the abnormal state module is adjusted to be a usual set value; and when an abnormal state still exists after the corresponding abnormal state module is restarted, a fault signal is output to the upper computer. According to the invention, the abnormal state of the ion accelerator can be monitored in real time, the abnormal state can be recovered automatically, and a fault code is output to the upper computer, so that the abnormal state can be handled in time, and the maintenance efficiency and reliability are improved.

The application relates to an ion accelerator standardized power supply and a standardized method thereof, which comprises a cabinet, at least one main controller, at least one machine box and at least one standard module unit; each machine box is arranged in a vertical direction and stacked in the cabinet; at least one standard function module is arranged side by side in each machine box; each standard function module is arranged in the machine box in a hot-pluggable manner, connected with a backboard through a self-defined standard connector and controlled by the main controller; the power supply unifies different types of power supply technical solutions in the field of ion accelerators, has unified and flexible structures, realizes different types and different specifications of accelerator excitation power supplies by changing or combining the standard function modules in the machine box. The application improves the efficiency of ion accelerator power supply design, processing, operation and maintenance, simplifies and unifies the production process, shortens the production cycle, saves the labor cost and the production cost. The application can be widely applied to the field of ion accelerators.

The invention relates to the technical field of ion accelerator radiotherapy, in particular to a drawing device for a beam distribution system. The drawing device comprises a shell assembly, a push rod assembly and a push rod assembly, wherein one end of the shell assembly is open; one end of the ionization chamber tray is inserted into the shell assembly through the opening; the two sliding assemblies are symmetrically arranged on the two sides of the ionization chamber tray and are respectively connected with the shell assembly; wherein the ionization chamber tray is provided with a receiving groove used for installing a beam detector, the shell assembly is provided with a square hole, and when the ionization chamber tray is embedded in the shell assembly, the square hole is aligned with the receiving groove. According to the beam detector, the bearing groove is formed in the ionization chamber tray, the ionization chamber tray is installed on the shell assembly in the drawable mode, the beam detector can be rapidly installed and replaced, meanwhile, the drawing device is light in structure and easy and convenient to operate, and repeated positioning precision can be ensured.

The present application relates to the technical field of batteries. Disclosed are a separator film and a preparation method therefor, and a battery and an electric apparatus. The separator film comprises a plurality of layers of microporous films, wherein an intermediate layer is provided between at least two layers of microporous films arranged to be adj acent to each other, and the intermediate layer includes a ferroelectric. In the solution of the present application, the separator film is configured to comprise a plurality of layers of microporous films, and an intermediate layer including a ferroelectric is provided between at least two layers of microporous films arranged to be adjacent to each other. Since the ferroelectric has a spontaneously polarized built-in electric field, which is equivalent to establishing an ion accelerator on an intermediate layer of the separator film, ions are accelerated under the action of the electric field when passing through the intermediate layer of the separator film, thereby improving the ionic conductivity of the separator film.

The application provides a compact beam switching deflection device and application thereof, and relates to the technical field of ion accelerator equipment. The device comprises a superconducting beam splitter, a multi-channel vacuum chamber and a superconducting combined magnet which are connected in sequence, wherein the superconducting beam splitter is used for splitting the input beam, the multi-channel vacuum chamber is provided with a plurality of outlet flanges, each outlet flange is connected to a branch beam line pipe, and at least one branch beam line pipe is provided with a superconducting combined magnet. The application adopts a superconducting magnet to deflect the beam, improves the maximum field strength of the deflection magnet, reduces the deflection radius of the beam, and thus reduces the floor area. Furthermore, the combined superconducting magnet is adopted to combine the quadrupole field on the dipole field, reduces the use of the quadrupole magnet, and thus further reduces the floor area.

The invention relates to an ion irradiation device and method under temperature gradient and application, the device comprises an ion accelerator system, an irradiation terminal vacuum target chamber and a temperature difference heating table arranged in the target chamber, a sample is fixed on the temperature difference heating table, and the temperature difference heating table provides a stable temperature gradient environment for the sample. The ion accelerator system provides ion beams with energy and types required by irradiation, and the irradiation terminal vacuum target chamber provides a vacuum environment required by an experiment. The temperature difference heating table is designed and mounted at the irradiation terminal of the ion accelerator system, so that ion irradiation of a sample under the condition of controlled temperature gradient is realized. By accurately reproducing the temperature distribution environment when the metal fuel serves in the reactor outside the reactor and carrying out ion irradiation, the method can simulate the irradiation behavior of the fuel under the actual working condition, so that important scientific research problems such as fuel element migration, fission product distribution and irradiation swelling are researched.

The present disclosure provides a multi-ion accelerator beam species switching control system and method. The control system comprises: a database configured to store operation parameters of a multi-ion accelerator; a treatment control system configured to perform protocol conversion on received beam information, generate beam application information, and the beam information at least includes ion species, energy size and particle number; an accelerator control system configured to generate control instructions based on the beam application information and the ion species ready for the multi-ion accelerator, and send the control instructions and the operation parameters to the multi-ion accelerator to control the multi-ion accelerator to switch the beam species; an accelerator safety interlock system configured to obtain operation state information and beam state information of the multi-ion accelerator, determine a beam species switching result based on the operation state information and the beam state information, and feed back the beam species switching result to the treatment control system and the accelerator safety interlock system.

The present application relates to the technical field of ion accelerator, in particular to a drift tube type linear accelerator. The linear accelerator comprises: a cavity cylinder, which is a shell structure with a cavity inside; a drift tube, which is a square tube with open slots at both ends; a first cross beam and a second cross beam arranged in the cavity; wherein a plurality of drift tubes are arranged along the central axis of the cavity cylinder at intervals, the first cross beam and the second cross beam are both provided with support rods, the support rods on the first cross beam and the second cross beam are arranged alternately and connected with the drift tubes one by one; the first cross beam is connected with a positive electrode, and the second cross beam is connected with a negative electrode, for establishing a radio frequency electric field between adjacent drift tubes. In the present application, the drift tube is arranged as a square tube with open slots at both ends and mixed arrangement, so that the linear accelerator can not only keep a high acceleration gradient in the longitudinal direction, but also have a strong focusing force in the transverse direction.

This invention relates to the field of ion accelerators, and more particularly to an electron cooling vacuum system for ion accelerators and a method for obtaining vacuum. The vacuum system includes two irregularly shaped vacuum chambers, two racetrack-shaped vacuum chambers, two vacuum chamber devices, a vacuum pipeline device, two electrostatic deflection plates, two first vacuum chambers, an electron gun vacuum chamber, and a collector vacuum chamber. The electron cooling vacuum system for ion accelerators provided by this invention, through the cooperation of a pentagonal alloy getter film, a titanium sublimation film, and NEG components, can effectively remove reactive gases and stably maintain a vacuum level of less than 1 × 10⁻⁶ within a vacuum pipeline device up to 8 m long. ‑9 The extremely high vacuum level of Pa significantly improves the beam lifetime. Because the shape of the irregular vacuum chamber is adapted to the shape of the internal space of the magnet, it not only meets the requirements of beam dynamics for magnetic field uniformity, but also realizes the pumping function in an extremely narrow physical space, solving the problem of not being able to install a large pump in a small space.

Multi-reflective time-of-flight mass analyzer, including: a latticeless ion accelerator; two ion mirrors arranged to reflect ions in a first dimension (X-dimension) and elongated in a second dimension (Z-dimension); and an ion detector; wherein the ion accelerator is arranged and configured to accelerate ions into a first of the ion mirrors at an angle to the first dimension, such that the ions are repeatedly reflected between the ion mirrors in the first dimension (X-dimension) while moving in the second dimension (Z-dimension); where the ions are not spatially focused in the second dimension (Z-dimension) as they move from the ion accelerator to the ion detector; and wherein the mass analyzer has a duty cycle of ≥ 5% and a resolution of ≥ 20000, wherein the distance in the first dimension (X-dimension) between the reflection points in the two ion mirrors is between 400 mm and 900 mm; wherein the mass analyzer is configured such that the ions travel a distance in the second dimension (Z-dimension) from the ion accelerator to the ion detector of between 150 mm and 400 mm, and wherein the ions are reflected between 3 and 10 times by the ion mirrors as they travel from the ion accelerator to the ion detector.

The invention relates to the technical field of ion accelerators, in particular to a radio frequency quadrupole accelerator system. The radio frequency quadrupole accelerator system comprises a radio frequency quadrupole cavity which is formed by sequentially splicing a plurality of sub-cavity sections along the length direction of the radio frequency quadrupole cavity; the cavity bracket is arranged below the radio frequency quadrupole cavity and extends along the length direction of the radio frequency quadrupole cavity; the power source module is connected with the radio frequency quadrupole cavity and is used for providing energy for generating a radio frequency electromagnetic field; the water cooling module is used for cooling the radio frequency quadrupole cavity; the vacuum module is communicated with the cavity division section and is used for reducing the internal air pressure of the radio frequency quadrupole cavity; wherein the power source module comprises power couplers, feed tubes and a radio frequency power source, and the plurality of power couplers are installed on the cavity dividing sections in a one-to-one correspondence mode and are connected with the radio frequency power source through the feed tubes. The radio frequency quadrupole accelerator system is simple and uniform in structure, easy to maintain and stable in performance.

A multi-reflecting time-of-flight (MR-TOF) mass analyser comprises: an ion accelerator 4 for pulsing ions into ion mirrors (2a, 2b) such that ions are reflected between the mirrors in a first dimensio

Device for dissipating waste heat from a heat source via a heat conduction arrangement to a heat sink, wherein the device is used in a spacecraft and the heat sink is the surrounding free space into which a radiant arrangement connected to the heat conduction arrangement emits thermal radiation, and wherein the heat conduction arrangement is thermally connected to a support structure which is arranged between the heat source and the heat conduction arrangement, and wherein the support structure and the heat conduction arrangement are made of different materials, characterized in that the heat conduction arrangement consists at least predominantly of an Al-Si alloy with a hypereutectic Si component.

The invention discloses a fission fragment collection and activity separation device and a collection and separation method, and relates to the technical field of radioactive isotope detection. The linear driving device is mounted at the upper end of the supporting bottom plate; the drawstring winding device is installed on the linear driving device, the drawstring winding device is connected with a drawstring body, and the linear driving device can drive the drawstring winding device and the drawstring body to move towards the detection device; the vacuum isolation chamber is provided with a first connector, a second connector, a third connector and a fourth connector, the second connector is connected with an inflation device, the third connector is connected with a vacuum device, and when the interior of the vacuum isolation chamber is in a negative pressure state, the fourth connector is used for adsorbing the drawstring body; and one end of the vacuum chamber is connected with the first interface, and the other end of the vacuum chamber is connected with the ion accelerator. The radioactive isotope activity separation device can be used for activity separation of radioactive isotopes, and is simple in structure and low in manufacturing cost.

The present application relates to a kind of electron cyclotron resonance ion source generation pulse multi-ion species beam method and system, it includes plasma discharge chamber, for generating and restricting plasma;Electron cyclotron resonance ion source magnet is arranged outside ion source cavity;Microwave source is arranged in the injection end of ion source cavity, the microwave power generated is transmitted to plasma discharge chamber, and the gas atom molecule existing in the inside of plasma discharge chamber is ionized, generates the required plasma;Pulsed gas feed-in system is arranged in the injection end of ion source cavity, for single gas or multiple gas is fed into ion source cavity, realizes the accurate feed of the gas required by ion source;Ion source cold electron gun is arranged in the injection end of ion source cavity, for preventing the escape of electron in plasma in axial direction and providing additional cold secondary electron injection, to adjust ion beam extraction flow intensity;Ion source extraction component is arranged in the extraction end of ion source cavity, for extracting ion beam flow.The present application can be applied in the field of ion accelerator.

This application provides a half-cavity directly coupled magnetic alloy high-frequency cavity, relating to the field of ion accelerator technology. The magnetic alloy high-frequency cavity is connected to a radio frequency power source. The magnetic alloy high-frequency cavity includes: a cavity body comprising two symmetrically arranged half-cavities; a vacuum pipe disposed inside the cavity body and connecting the two half-cavities; multiple magnetic alloy rings disposed in a single half-cavity and coaxially arranged with the vacuum pipe, the multiple magnetic alloy rings being parallel to each other; a coupling device for electromagnetically coupling the multiple magnetic alloy rings located in a single half-cavity to form an overall load unit; and an impedance transformation unit disposed on one side of each half-cavity and electrically connected to the overall load unit, used to transform the impedance of the overall load unit to an impedance matching the characteristic impedance of an external feed line, so as to connect to the radio frequency power source through the external feed line. This application, through a half-cavity fully coupled design, eliminates inter-path coupling, ensuring that the port impedance test value is consistent with the actual value, and is easy to adjust.

The application relates to a conduction cooling structure of an ion accelerator power supply, which comprises a cabinet, standard module units and a conduction cooling unit; the standard module units comprise at least one standard function module which is hot-pluggably arranged in the cabinet, and each standard function module is connected with a main controller through a backplane in a rear panel of the cabinet via a self-defined standard connector; the conduction cooling unit comprises at least two water cooling plates which are arranged close to two sides of each standard function module and elastic sheet fastening plates which are arranged between the standard function module and the water cooling plates, each elastic sheet fastening plate is used for extruding each standard function module, so that each standard function module is in close contact with the water cooling plate, and the standard function module is cooled by the water cooling plate. The elastic sheet fastening plates are used for extruding the standard function modules, and a water-electricity separation structure with high performance-price ratio is provided for the water cooling structures of different types and different specifications of power supplies in a unified ion accelerator. The application can be widely applied in the field of ion accelerators.

The present disclosure provides a medical miniaturized ion accelerator, comprising: an ion source for generating low-energy ions with an initial energy; a linear accelerator for preliminarily accelerating the low-energy ions to obtain a medium-energy beam; a synchrotron for accelerating the medium-energy beam to obtain a high-energy beam with a target energy; the synchrotron comprises: two deflection units connected head-to-tail through two straight sections, for deflecting the beam in the synchrotron, and the deflection angle of each deflection unit is 180°; a focusing unit corresponding to each straight section, arranged on the straight section, for focusing the beam in the synchrotron in the horizontal direction and the vertical direction; a high-frequency accelerating cavity arranged on one straight section, for accelerating the beam in the synchrotron; an injection system arranged on the two straight sections, for introducing the medium-energy beam into the synchrotron; and a slow extraction system arranged on the two straight sections, for extracting the high-energy beam with the target energy obtained after acceleration.

A separator film comprises a plurality of layers of microporous films, wherein an intermediate layer is provided between at least two layers of microporous films arranged to be adjacent to each other, and the intermediate layer includes a ferroelectric. In the solution of the present application, the separator film is configured to comprise a plurality of layers of microporous films, and an intermediate layer including a ferroelectric is provided between at least two layers of microporous films arranged to be adjacent to each other. Since the ferroelectric has a spontaneously polarized built-in electric field, which is equivalent to establishing an ion accelerator on an intermediate layer of the separator film, ions are accelerated under the action of the electric field when passing through the intermediate layer of the separator film.

The invention relates to the technical field of ion accelerators, in particular to a drift tube type linear accelerator. The linear accelerator comprises a cavity cylinder which is arranged to be of a shell structure with a cavity inside; the drift tube is a square tube of which the two ends are provided with open slots; the first cross beam and the second cross beam are arranged in the cavity; wherein the plurality of drift tubes are arranged at intervals in the cavity along the central axis of the cavity cylinder, the first cross beam and the second cross beam are both provided with supporting rods, and the supporting rods on the first cross beam and the second cross beam are alternately arranged and are connected with the drift tubes in a one-to-one correspondence manner; the first cross beam is connected with the positive electrode, and the second cross beam is connected with the negative electrode, so that a radio frequency electric field is established between the adjacent drift tubes. According to the linear accelerator, the drift tube is arranged to be the square tubes with the opening grooves in the two ends, and the square tubes are arranged in a mixed mode, so that the linear accelerator can keep a high acceleration gradient in the longitudinal direction and can have high focusing force in the transverse direction.

The invention relates to a multifunctional environment purification composite material, in particular to a composite material which does not depend on rare earth oxide, can continuously release negative ions and efficiently remove formaldehyde and peculiar smell and has high far infrared emissivity and a preparation method of the composite material. The composite material comprises the following raw materials in percentage by mass: 25-50% of silicon carbide; 20 to 45% of titanium dioxide; 10-25% of zinc oxide; 10-25% of a composite negative ion accelerator; wherein the composite negative ion accelerant is formed by compounding germanium-containing mineral powder or rare earth mineral powder and alkaline earth metal carbonate according to the mass ratio of (0.5-2): 1. Through the synergistic effect of all the components, stable negative ion release (larger than or equal to 5000 ions / cm), high far infrared emissivity (larger than or equal to 0.90) and efficient formaldehyde degradation (the 24-hour removal rate is larger than or equal to 90%) can be achieved at normal temperature and normal pressure. The product has the advantages of easily available raw materials, low cost and simple process, is suitable for various substrates such as coatings, ceramics, plastics, textiles and the like, and has wide application prospects.

The invention provides a permanent magnet quadrupole magnet, which is used for an ion accelerator and comprises a permanent magnet assembly, a positioning structure and a shell assembly, the permanent magnet assembly is an annular quadrupole magnet formed by arranging twelve independent fan-shaped permanent magnet blocks in a surrounding mode. The positioning structure comprises a permanent magnet positioning inner cylinder coaxially arranged on the inner side of the annular magnetic ring and a magnet positioning cylinder coaxially arranged on the outer side of the annular magnetic ring in a sleeving mode. The permanent magnet positioning inner cylinder and the magnet positioning cylinder are matched together, and the circumferential directions of the fan-shaped permanent magnets are clamped and fixed from the radial inner side and the radial outer side; the shell assembly comprises a permanent magnet shell and at least one magnet end plate; one end of the permanent magnet positioning inner cylinder is fixedly connected with the magnet end plate, and the magnet end plate is clamped and positioned with the end part of the permanent magnet shell, so that the permanent magnet assembly and the positioning structure are packaged in the permanent magnet shell.