42 results about "Ion accelerators" patented technology

The invention discloses an in-situ device and method for measuring curvature change of a sample in an ion irradiation process, and the in-situ device comprises a sample clamping and beam measurement assembly which is used for positioning the sample in the irradiation direction of an ion beam, can achieve the safe clamping of the sample and the free generation of curvature change at the same time, and is used for measuring the curvature change of the sample. The measurement of irradiation fluence, temperature and curvature can be realized at the same time; the temperature measurement and control assembly can measure and control the temperature of the sample; the in-situ profile measurement assembly can realize in-situ surface curvature measurement of the sample in the irradiation and heating processes; the vacuum component is used for providing a vacuum environment for the components; and the in-situ device is arranged at the terminal of the ion accelerator to measure the curvature change of the sample in the ion irradiation process. The method can be used for researching material size change, modulus, thermal expansion rate change and the like caused by factors such as defects, crystal growth and helium bubbles in the irradiation process of materials, and provides means for research, development, screening and evaluation of nuclear materials.

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.

The invention belongs to the technical field of high-current ion accelerators, and relates to a calibration device for a beam position detector, which comprises a horizontal supporting platform, a two-dimensional moving platform, a signal wire fixing unit, a signal wire adjusting unit and a detector supporting part, the two-dimensional moving platform is arranged on the horizontal supporting platform, the signal wire fixing unit is fixed on the two-dimensional moving platform and is used for fixing a signal wire, the detector supporting part is arranged on the horizontal supporting platform and is used for placing a beam position detector, and the signal wire penetrates through the beam position detector and is fixed on two opposite side surfaces of the signal wire fixing unit. The two side faces for fixing the signal wire are each provided with a signal wire adjusting unit used for tensioning the signal wire. According to the scheme, the device is high in repeated positioning precision, easy to adjust, convenient to disassemble and assemble, simple in structure and stable in performance, and can be used for calibrating beam position detectors with various polar plates with different diameters.

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 present invention provides a beam extraction high-voltage control method and device for a medical heavy-ion accelerator, relating to the technical fields of particle accelerators and signal processing. The method includes: storing the extraction high-voltage parameters of all energies through a database; using a waveform combination server to read the extraction high-voltage parameters and generate a corresponding parameter file; using an event interpreter to receive the parameter file and the trigger event signal distributed by a synchronous trigger system, and generating a high-voltage control instruction after parsing the trigger event signal; and a high-voltage power supply controller performing pulse control on the high-voltage power supply loaded at both ends of an electrostatic deflection plate according to the high-voltage control instruction. By using the self-developed event interpreter, the present invention can receive the parameter file from the waveform combination server and the trigger event signal from the synchronous trigger system, automatically generate a control instruction after parsing the event, and send it to the high-voltage power supply controller, thereby realizing the pulse control of the high-voltage power supply.

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.

A beam accelerator system comprises: a beamline comprising a low-pressure chamber and an ion accelerator configured to generate an ion beam; a target chamber; and a plasma window assembly interposed between and fluidly connecting the beamline and the target chamber. The plasma window assembly comprises an anode and a plurality of cooling plates. Each cooling plate comprises an aperture having an aperture axis that is aligned with an aperture axis of an aperture in one or more adjacent cooling plates to form a plasma channel. One or more cooling plates of the plurality of cooling plates is a cathode plate comprising at least one cathode.

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.

A mass spectrometer, the mass spectrometer comprising: an ion accumulation device (14) for accumulating and pulsed output ions (8); the invention relates to a time-of-flight mass analyzer, comprising: an ion mirror (2a, 2b) for reflecting ions; ion accelerators (4) arranged and configured to receive ions from the ion accumulation means and pulse the ions into one of the ion mirrors such that when the ions drift in a drift dimension, the ions reflect back and forth between the ion mirrors in a first dimension; a reflector (12a, 12b) for reflecting the ions in the drift dimension; an ion detector (6) for detecting ions; and a control circuit configured to activate the reflectors to pass the ions multiple times along the drift dimension, and then deactivate one of the reflectors to allow ions to pass to the ion detector and be detected, wherein timing of activation and deactivation of the reflector enables only ions within a first range of mass-to-charge ratios to experience the same number of passes in the drift dimension when the ion detector detects the ions; and wherein a control circuit of the mass spectrometer synchronizes the time when the ion pulses exit the ion accumulation device with the time when the ions are pulsed by the ion accelerator such that only ions having a mass-to-charge ratio within the first range are pulsed by the ion accelerator into the one of the ion mirrors.

The invention discloses an anti-radiation far infrared radiation material capable of generating negative ions, and belongs to the technical field of far infrared radiation material preparation. The anti-radiation far infrared radiation material capable of generating the negative ions is prepared from the following components in parts by weight: 38 to 46 parts of silicon carbide, 12 to 22 parts of boron nitride, 18 to 24 parts of titanium dioxide, 8 to 15 parts of an anti-radiation agent, 5 to 11 parts of a negative ion accelerant and 6 to 12 parts of deionized water, the anti-radiation agent is prepared from pea protein, xanthan gum, curcumin, sodium alginate, glycosaminoglycan and activated carbon, and the negative ion accelerant is prepared from beta-cyclodextrin, dopamine and graphene oxide. The far-infrared radiation material prepared by the method can effectively improve the radiation resistance and the negative ion generation capability of the far-infrared radiation material.

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.

The invention provides a modularized quadrupole-time-of-flight mass spectrometry system. The modularized quadrupole-time-of-flight mass spectrometry system comprises an ion beam source module, a front ion lens group, a quadrupole mass selection module, a rear ion lens group, an ion acceleration module, an ion reflection module and an ion detection module. After installation, the ion emergent direction of the ion beam source module, the axis of the front ion lens group, the axis of the quadrupole rod mass selection module, the axis of the rear ion lens group and the ion incident direction of the ion acceleration module are collinear. The ion incident direction and the ion emergent direction of the ion accelerator can be collinear or vertical. The ion reflection module is used for reflecting ions emitted by the ion accelerator to the ion detection module. The ion acceleration module of the modular quadrupole-time-of-flight mass spectrometry system provided by the invention has two installation forms, and solves the problem of single combination form of a quadrupole-time-of-flight mass spectrometer in the prior art.

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

A system for generating thrust includes a thruster body having a funnel and an ion accelerator. The funnel has an opening at a first end of the thruster body and is configured to receive neutral particles and cause ionization of the neutral particles, resulting in corresponding ions and electrons. The ion accelerator extends from the funnel to a second end of the thruster body and is configured to receive the ionized particles from the funnel and cause ejection of the ionized particles from an opening at the second end of the thruster body, generating thrust.

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.