26 results about "Accelerated particle" patented technology

The application discloses a strip type NEG (Non Evaporable Getter) pump for a particle accelerator and a use method thereof. The pump comprises a getter assembly, a fixing part, a vacuum flange and an electrode. One end of the getter assembly is provided with the fixing part, the fixing part is fixedly connected with one side of the vacuum flange, the other side of the vacuum flange is provided with the electrode, and the getter assembly is electrically connected with the electrode. The getter assembly comprises two or more getter strips, each getter strip is arranged side by side and fixedly connected with the fixing part at one end, and a gap is reserved between two adjacent getter strips. The use method is that the strip type NEG pump is inserted into a vacuum chamber along the axial direction of the vacuum chamber and then fixedly installed, each getter strip is parallel to the axis of the vacuum chamber, the vacuum flange is fixedly installed with the side wall of the vacuum chamber, and the electrode is externally connected with a power supply device. The application can effectively improve the uniformity of vacuum distribution, maintain a high vacuum degree, avoid misfiring of a beam, has a simple structure, is convenient to install, and can be adapted to the installation requirements of the accelerator vacuum chamber in a large range.

This invention provides a multi-cavity tuner control system and method for high-frequency cavities in particle accelerators, belonging to the field of particle accelerator technology. The system includes: a field-programmable gate array (FPGA) communicatively connected to multiple high-frequency cavities, used to acquire cavity sampling signals and incident reference signals from the multiple high-frequency cavities, and generate corresponding phase difference information for the high-frequency cavities based on the cavity sampling signals and incident reference signals; an embedded computer communicatively connected to the FPGA, used to generate control commands based on the phase difference information; and multiple tuner actuators, each corresponding to a high-frequency cavity, which are communicatively connected to the embedded computer via an industrial Ethernet bus, used to adjust the resonant frequency of the corresponding high-frequency cavity according to the control commands. This invention achieves high-precision, high-synchronization, and automated tuning of the multi-cavity tuner.

This invention relates to the field of particle accelerator technology, and more particularly to a beam terminal membrane window, a beam terminal, and a particle accelerator. The beam terminal membrane window includes a pressure plate, a sealing plate, an isolation membrane, and a sealing protection structure. The sealing protection structure is located on the sealing plate and at the edge of the working window. The sealing protection structure includes a transition surface and at least two levels of protective recesses. The sealing protection structure is used to seal the isolation membrane between the sealing plate and the pressure plate, utilizing the various levels of protective recesses to reserve space for the recessed isolation membrane from the sealing connection surface to the vacuum environment side, forming a stepped space. The stepped space and the transition surface work together on the working window to achieve a synergistic effect of sealing and space protection. Under conditions of large scanning area and highly uniform beam passage, this beam terminal membrane window can seal and isolate the inside and outside of the accelerator device, ensuring reliable particle beam passage and effectively improving the sealing performance and safety of the accelerator device.

This invention discloses a low-accelerating-voltage radio frequency (RF) cavity, belonging to the field of particle accelerator technology. The RF cavity includes a standing-wave resonant cavity, with its core improvement lying in the periodic arc-shaped corrugated structure on the surface of the inner conductor, and the inner conductor surface being coated with a 5-10 nm thick TiN thin film. This invention disrupts the resonance conditions for secondary electron multiplication through the periodic corrugated structure, while simultaneously utilizing the TiN thin film to reduce the secondary electron yield on the inner conductor surface. The synergistic effect of these two methods achieves highly efficient suppression of the secondary electron multiplication effect with minimal impact on the cavity's RF performance. This low-accelerating-voltage RF cavity has a simple structure and reliable operation, effectively improving the stability and reliability of cavity operation. It is particularly suitable for the focusing cavity of petal accelerators, significantly improving beam quality and reducing beam loss.

The application discloses a particle accelerator operation control method, device, system, equipment and medium, relates to the particle accelerator control technical field, and through the global configuration parameter package as a unified driving source, the multidimensional control subsystem is real-time collaborative scheduling, so that the multidimensional control subsystem independently runs in parallel under the premise of not interfering with each other. Wherein the method comprises: according to the operation plan of the particle accelerator, the global configuration parameter package is generated in advance;Under the driving of the global configuration parameter package, the multidimensional control subsystem is collaboratively scheduled, so that the multidimensional control subsystem independently and in parallel executes corresponding control logic, and obtains parallel output information;Combining the current beam state, the parallel output information of the multidimensional control subsystem is fused to obtain a beam control decision;The beam control decision is issued to the execution equipment, so that the execution equipment triggers corresponding beam control actions according to the beam control decision.

The application discloses a kind of particle accelerator beam calibration system and calibration method, wherein, particle accelerator beam calibration system includes support assembly, particle accelerator and calibration component;Particle accelerator is provided with rotation axis and is used for emitting beam's beam outlet, and the particle accelerator is connected with the support assembly and can be rotated under the drive of support assembly;Calibration component is installed to the particle accelerator and can follow the rotation of the particle accelerator, one end of the calibration component extends to the isocenter of the calibration system horizontally and forms indicating part, and the indicating part can indicate the isocenter position corresponding to the particle accelerator;Pit is communicated with the space above ground to constitute the rotation space of calibration component.The particle accelerator beam calibration system and calibration method of the application are used to pre-commissioning for particle accelerator beam, reduce the commissioning period of particle accelerator when installing in hospital, and benefit the people faster to put into use for particle accelerator.

This invention discloses an accelerating tube for a high-pressure particle accelerator, relating to the field of high-pressure equipment technology. It includes a tube body with standard high-vacuum metal flanges welded to its upper and lower ends. The tube body has through-holes for mounting ceramic support columns, composite electrode columns, and electrode plates. A voltage divider resistor is also mounted on the composite electrode column through through-holes. This invention employs a one-piece tube body, increasing the mechanical strength of the device. The use of similar components ensures welding quality and reduces the occurrence of issues such as cracking at joints that affect the device's performance. The vacuum level inside the accelerating tube, the stability of the accelerating tube, and its service life are all improved. The electrode plates are fixed and positioned by the composite electrode columns and ceramic support columns, making it easier to ensure accurate alignment between the electrode plates and the center point of the accelerating tube. Furthermore, the gap between the electrode plates and the tube body helps to create a relatively uniform vacuum environment, which helps suppress arcing within the accelerating tube.

This invention relates to a testing apparatus and method for a rotating target used in particle accelerators. The testing apparatus for the rotating target includes a vacuum system, a power loading system, a drive control system, a cooling system, and a sensor and data acquisition system. The rotating target is mounted within a vacuum testing chamber using a fixed bracket. The stator of a motor that drives the target's rotation is mounted on the fixed bracket, while the rotor is fixed to the target. The target is driven by induction via the drive control system. The motor stator generates a rotating magnetic field through a power supply to drive the rotor, thereby driving the target to rotate at high speed. By establishing extreme operating environments such as high vacuum, high temperature, and high radiation for the rotating target, simulating actual working conditions, and by testing parameters such as rotational speed, acceleration, and displacement, the performance and reliability of the rotating target or bearing are comprehensively evaluated, thereby improving the design optimization of the rotating target or bearing.

The invention belongs to the technical field of burn personalized skin scaffold systems, and particularly relates to a burn personalized skin scaffold design method and system fusing 3D printing and an adaptation algorithm, and the method and system carry out multi-modal data synchronous collection, modal noise reduction and standardized safety storage. A high-precision clock module is additionally installed for OCT equipment, a temperature sensor, a pH biosensor and a fluorescence imaging module, unified acquisition software is established to set a corresponding sampling frequency, multi-equipment synchronous acquisition is realized through single triggering, and a fast expansion random tree and a particle swarm optimization algorithm accelerated by a GPU are adopted; an edge calculation module is integrated at a printing equipment end, a real-time data processing framework is adopted, a physical and digital twin system is established to optimize printing parameters to perform closed-loop control, and testing is performed on a bionic skin model containing a dynamic fluid circulation system and a mechanical stretching device.

The application relates to the technical field of particle accelerators, in particular to a high-precision scanning magnet suitable for low-field ultra-high frequency. The scanning magnet comprises a magnet module provided with a core assembly and a coil assembly; a support module provided with a support base, a first support assembly and a second support assembly; the first support assembly and the second support assembly are respectively in sliding connection with the support base and arranged in a straight line, the core assembly is fixed to the first support assembly, the coil assembly is fixed to the second support assembly, and the core assembly and the coil assembly are not in contact with each other. In the application, the structure of the scanning magnet is optimized, different support assemblies are used to independently support the core assembly and the coil assembly, high-frequency vibration of the coil assembly can be avoided to cause damage to the core assembly under the condition of ultra-high frequency operation, the magnetic field precision of the scanning magnet can be improved, and therefore the scanning magnet can stably and accurately scan the particle beam for a long time.

This invention discloses a method for mutual aiming and measurement of laser trackers in hidden areas, belonging to the field of large-space precision measurement technology. The invention deploys a reference tracker in the visible area and the tracker under test in the hidden area. The tracker under test drives a target sphere to perform spherical motion, while the reference tracker collects data from spherical sampling points. A robust Taubin sphere center fitting algorithm is used to fit the rotation center coordinates of the tracker under test, completing self-calibration. Finally, coordinate system transformation achieves measurement and coordinate unification in the hidden area. The robust Taubin sphere center fitting algorithm of this invention introduces robust estimation concepts, effectively suppressing the influence of abnormal data on the fitting results through weighted iterative optimization of the objective function. This invention completely solves the technical problems of not being able to deploy a common visible point and achieve coordinate system unification in hidden / narrow areas, significantly improving the accuracy and robustness of sphere center fitting, and meeting the collimation requirements of high-end devices such as particle accelerators.

The application relates to the field of particle accelerators and nuclear power plant cooling technology, and discloses a cooling device suitable for high-power rays, which comprises an absorber assembly, a cooling water system assembly, a vacuum tube assembly, a shielding body assembly and a supporting assembly. The absorber assembly is welded by brazing process from internal graphite and external copper, the copper is provided with a gas hole penetrating into the graphite layer, the gas hole is connected with an internal air cavity of the graphite, and a vacuum sealed cavity is formed. The cooling water system assembly comprises a water distributor designed with two layers of water inlet ring cavities and two layers of water outlet ring cavities, so that the flow is evenly distributed. The absorber cooling water pipe is embedded in the copper and connected with a U-shaped pipe to form a cooling loop. The electron beam strikes the graphite to generate heat, the heat is transferred to the copper, and the cooling water in the cooling water pipe embedded in the copper carries away the heat. The shielding body assembly is arranged around the vacuum tube assembly to prevent radiation leakage. The cooling device realizes effective heat dissipation of 8 GeV high-power rays, has excellent radiation resistance and a very high fatigue life.

This invention discloses a transverse feedback excitation device with high shunt impedance and horizontal light extraction, belonging to the field of particle accelerator technology. The device includes a beam position detector (BPM), an RF front-end, an ADC module, a digital signal processing module, a DAC module, a power divider, a power amplifier, a low-pass filter, an exciter (Kicker), and matching loads. The exciter (Kicker) has four parallel electrode strips located on both sides of the beam centerline, with two strips on the same side connected in parallel. Each electrode has a characteristic impedance of 100Ω, resulting in an equivalent total characteristic impedance of 50Ω after parallel connection. The four electrode strips are symmetrically distributed at the four corners within the vacuum chamber cross-section, avoiding the horizontal midplane to form an open optical path. This invention improves the shunt impedance of the exciter, reduces the RF power requirement, achieves impedance matching with a standard 50Ω system, and ensures unobstructed horizontal extraction of synchrotron radiation light.

This invention relates to the field of particle accelerator control technology, and discloses a method and system for predicting low-level control parameters of a particle accelerator, comprising: Step 1, acquiring low-level control-related data and encapsulating it into a parameter tuning cycle-level input sample set; Step 2, determining the influence of control actions, thermal drift hysteresis, and channel mismatch conduction; Step 3, generating a state differentiation vector, state constraint labels, and an input sequence with state labels; Step 4, performing three-branch bidirectional long short-term memory network encoding fusion to obtain a comprehensive memory feature; Step 5, obtaining a parameter tuning context representation based on the comprehensive memory feature and state constraint labels through attention weighting; Step 6, obtaining the establishment power and predicted values ​​of incident and reflected power of multiple channels; Step 7, combining the target establishment power to back-calculate the control setpoint for the next parameter tuning cycle. This invention realizes the prediction and determination of the low-level control setpoint of the particle accelerator in the next parameter tuning cycle.

This disclosure provides an assembly apparatus for an arc-shaped superconducting magnet, relating to the field of particle accelerator assembly. The assembly apparatus includes: a drive module for providing power to drive the arc-shaped superconducting magnet along a predetermined trajectory into a cryostat; a support module connected to the drive module for supporting the arc-shaped superconducting magnet; a sensing module disposed on the surface of the superconducting magnet for detecting operating parameters during the movement of the arc-shaped magnet; and a control module communicatively connected to the drive module and the sensing module for controlling the operating state of the drive module based on the operating parameters fed back by the sensing module. This method, through the coordinated operation of the drive module, sensing module, and control module, transforms the assembly process of the arc-shaped superconducting magnet from an invisible, feedback-free, and purely experience-based manual operation into an intelligent operation mode with full-process visual detection, significantly improving the assembly safety and positioning accuracy of large-scale cryogenic superconducting equipment.

The application discloses a device for measuring orbital angular momentum of vortex particles based on a gradient magnetic field, which is integrated in a beamline system of a particle accelerator or an electron microscope and used for measuring the orbital angular momentum of a vortex particle beam in real time. The device comprises a vortex particle source, a gradient magnetic field device, a detection system and a processing system. The vortex particle source is used for providing a vortex particle beam. The gradient magnetic field device is used for exerting a transverse deflection force related to the orbital angular momentum on the vortex particle beam. The detection system is used for receiving the particle beam after a certain longitudinal movement and obtaining an intensity distribution image of the particle beam. The processing system is used for calculating the orbital angular momentum of the vortex particle beam according to the intensity distribution image and magnetic field gradient parameters. The device for measuring the orbital angular momentum of vortex particles based on the gradient magnetic field has the characteristics of simple structure, fast response and integration in the beamline system, and is suitable for various equipment environments such as particle accelerators, electron microscopes and the like.

This invention relates to the field of charged particle beam parameter measurement technology, and provides a compact pepper pot emittance measuring instrument with absolute current intensity calibration. It includes a "pepper pot" planar component, a fluorescent screen component, an observation window, and a camera system. The "pepper pot" planar component is integrated with a multi-layer structure, wherein the beam measurement layer uses a specially designed Faraday cylinder to directly measure beam intensity for calibration of measurement results. The fluorescent screen supports longitudinal position adjustment via a movable mounting bracket. The camera system can focus on the fluorescent screen and take pictures. This invention, through innovative structural design and dynamic calibration technology, eliminates the nonlinear distortion problem between grayscale value and beam intensity, improves measurement accuracy, achieves high-precision beam screening, improves the ability to capture weak beam signals, and can quickly calculate beam emittance. It is suitable for rapid and accurate measurement of charged particle beam emittance in fields such as particle accelerators.

The present application belongs to the technical field of particle accelerators, and discloses a solid target low-gas automatic target changing system based on target material loss real-time monitoring, which comprises a target chamber, a fixed water-cooled back plate, a target library, a modular target assembly, a target material loss monitoring module, an automatic target changing execution mechanism, an ultrahigh vacuum pumping system, a vacuum isolation valve and a central control system. The target material loss monitoring module is used to realize real-time monitoring of target material depletion. The modular target assembly and the automatic target changing execution mechanism are used to realize fully automatic target changing. The fixed water-cooled back plate is fixed and sealed without disassembly throughout the whole process. The whole system adopts low-gas materials and full-metal sealing. The vacuum is not damaged, the cooling is not interrupted, and there is no radiation exposure during target changing. The present application realizes online monitoring of target material loss, fully automatic target changing, fixed cooling, low-gas and ultrahigh vacuum stable operation, and solves problems such as high radiation risk, low target changing efficiency, easy damage of vacuum and easy failure of cooling structure.

This invention provides a method and apparatus for designing energy slits in a heat-homogenizing particle accelerator. The energy slit design method includes: constructing a three-dimensional coordinate system based on electron beam propagation characteristics; discretizing the front face of the energy slit blocking block in the electron beam propagation direction into a trapezoidal sawtooth array comprising multiple trapezoidal blocking units; obtaining the energy deposition distribution characteristics of the electron beam through a three-dimensional energy deposition field model of the electron beam, thereby determining the initial geometric parameters of the trapezoidal sawtooth array; establishing an inverse covariant relationship between the trapezoidal sawtooth array and the local electron beam power density; obtaining the energy deposition distribution characteristics while maintaining a constant height of the trapezoidal blocking units in the trapezoidal sawtooth array; and adjusting the initial geometric parameters of the trapezoidal sawtooth array to achieve gradient dilution of the central energy and heat load homogenization within the entire trapezoidal sawtooth array range.

The present application relates to the technical field of particle therapy, and particularly provides a particle therapy instrument, which comprises a body (provided with a particle accelerator), a treatment head arranged on the body, and a transmission pipeline connected between the particle accelerator and the treatment head for transmitting a particle beam. The transmission pipeline is provided with a deflection part for changing the direction of the particle beam at each bending position, wherein the deflection part at the bending position with the largest bending angle is a first deflection part, and the first deflection part is composed of at least two deflection magnets. By distributing the large turning amount to multiple magnets with smaller deflection angles, the bending angle requirement of a single magnet can be significantly reduced, the weight and volume of the magnet can be reduced, the design of the magnet yoke and coil can be simplified, and thus the manufacturing difficulty and cost can be reduced. Meanwhile, the segmented transportation, on-site hoisting and positioning are facilitated, the demand for large lifting equipment and the installation and debugging time are reduced, and the transportation, installation and debugging cost is reduced.

[0245] A target holder for holding a target material for irradiation by a charged particle beam of a particle accelerator system comprises a holder body comprising: a target chamber that is at least partly delimited by a chamber base; an aperture in the holder body providing an inlet to the target chamber; and an outlet conduit for removing an etchant solution from the target chamber, the outlet conduit extending from an exit port provided in and in fluid communication with the target chamber to an outlet. The target holder further comprises a protective layer provided on at least a portion of the chamber base within the target chamber, the protective layer defining a support surface for supporting a target material to be irradiated. The aperture and support surface are arranged such that a target material provided on the support surface can be irradiated by a charged particle beam passing through the aperture. The protective layer comprises a metal or metal oxide comprising Ag, Au, Ru, Rh, Os, Ir, Pt, Zr, Ti, Nb, Ta, Ni, W, Nb or combinations thereof.

This invention discloses a rotation positioning device, control method, and treatment system for a particle accelerator. The rotation positioning device includes at least a first guide member, a second guide member, and a clamping device connected to each other. The first guide member controls the clamping device to move along a first direction, and the second guide member controls the clamping device to move along a second direction. The clamping device clamps the particle accelerator and causes it to rotate around its central axis. The first and second directions intersect. The first and second guide members cooperate to move the particle accelerator on an arc centered on the treatment area, and the clamping device controls the rotation of the particle accelerator during its movement on the arc, ensuring that the particle accelerator's output beam always faces the treatment area. The rotation positioning device provided by this invention is simple to install, small in size, occupies less space, and is easier to operate in practical applications.

This invention discloses a rotational positioning device, control method, and treatment system for a particle accelerator. The rotational positioning device includes a first guide member, a second guide member, and a clamping device. One end of the first guide member is connected to the second guide member, and the other end of the first guide member is connected to the clamping device. The first guide member can slide relative to the second guide member, and the second guide member can rotate about a fixed axis. The clamping device is used to clamp the particle accelerator and cause the particle accelerator to rotate about its central axis. The first and second guide members cooperate to move the particle accelerator on an arc centered on the treatment area, and the clamping device controls the rotation of the particle accelerator during its movement on the arc, ensuring that the particle accelerator's output beam always faces the treatment area. The rotational positioning device provided by this invention has the advantages of simple installation, small size, smaller footprint, and simpler operation in practical applications.