255 results about "Particle accelerator" patented technology

The invention relates to the technical field of particle accelerators, in particular to a transverse feedback system with a switchable excitation direction and a control method thereof, and the system comprises a beam position detector BPM which is used for measuring a beam signal; the RF front end is used for receiving the beam signal sent by the beam position detector BPM and carrying out amplification and filtering processing; the ADC module is used for converting the beam signal into a digital signal; the digital signal processing module is used for carrying out digital signal processing calculation to obtain an excitation signal; the DAC module is used for carrying out digital-to-analog conversion; the power divider is used for adjusting the phase of the excitation signal; the exciter comprises four Kickers with electrodes, a power amplifier, a low-pass filter and a matched load and is used for applying a transverse excitation signal to the beam current, and the problems that in the prior art, a transverse feedback system Kicker occupies a large longitudinal space, the system is complex, and precision and efficiency are low are solved.

The invention belongs to the technical field of particle accelerators, and discloses a nonlinear impact magnet based on a nanocrystalline magnetic material and a matched power supply system. The nonlinear impact magnet comprises a magnetic core and a magnet exciting coil assembly, the magnetic core comprises magnetic poles and a magnetic yoke; the magnetic pole and the magnet yoke are both of a fully-symmetrical annular structure, and the magnet yoke is arranged on the periphery of the magnetic pole. The magnetic pole comprises N same magnetic pole units, N is 4, 6 or 8, and the magnetic pole is made by laminating nanocrystalline strips; and the excitation coil assembly is wound outside each magnetic pole unit. Compared with a traditional silicon steel sheet or ferrite magnetic core, the magnet provided by the invention can improve the uniformity of a magnetic field, and the magnetic pole made of the nanocrystalline strip with ultrahigh magnetic conductivity and low coercive force has stronger magnetic field uniformity and low disturbance characteristic; and the design requirement of the STCF clash ring off-axis injection system for low disturbance of the circulating beam bunch can be better met.

The invention provides an adaptive weight multi-particle beam flow transmission simulation method and device, and the method belongs to the technical field of particle accelerators, and specifically comprises the steps: dividing a to-be-processed macro particle beam to form a plurality of groups of macro particles; configuring a relative weight for each group of macro particles according to the density distribution characteristics of the macro particle beams; sampling each group of macro particles in combination with the relative weight of each group of macro particles to obtain a corresponding sampling result; determining the weight of each macro particle in each sampling result in combination with the relative weight of each macro particle in each sampling result; determining similarities of a candidate beam bunch and a macro particle beam bunch in different dimensions, wherein the candidate beam bunch is formed by collecting sampling results configured with weights of macro particles; under the condition that the similarity meets a beam dynamics simulation condition, determining the candidate beam bunch as a new macro particle beam bunch; the new macro particle beam is used for replacing the macro particle beam to carry out multi-particle beam flow dynamic simulation, and the evolution process of beam transmission in the accelerator is described.

The invention discloses a particle accelerator multi-particle dynamics efficient simulation method, system and device and a medium. The method comprises the steps that a small number of macro particles are sampled from an initial macro particle beam to form a new macro particle beam; performing multi-particle beam flow dynamics simulation on the new macro particle beams by adopting a PIC algorithm, and projecting the new macro particle beams to four two-dimensional phase spaces in a distributed manner to generate low-resolution phase diagrams of the four two-dimensional phase spaces; obtaining beam physical parameters based on the new macro particle beam; and inputting the low-resolution phase diagram and the beam physical parameters into a beam halo super-resolution network, and outputting a high-resolution phase diagram of each phase space to realize multi-particle beam flow dynamics simulation. Therefore, by combining a traditional numerical calculation method and an artificial intelligence technology, the problem that an existing artificial intelligence algorithm is weak in generalization ability in the field of beam dynamics simulation is solved, rapid and high-precision simulation of the large-scale multi-particle beam flow dynamics process is achieved, and the method is applied to the field of particle accelerator beam dynamics simulation.

The invention belongs to the field of particle accelerator microwaves, and particularly relates to a C-band compact spherical microwave pulse compression device which comprises a shell, a dual-polarization mode coupler and a circular waveguide, a spherical energy storage cavity is formed in the shell, and the circular waveguide and the spherical energy storage cavity are communicated through a coupling hole; the dual-polarization mode coupler comprises a rectangular waveguide, a butterfly-shaped matching section and a cylindrical matching section. According to the klystron radio frequency pulse compression circuit, the radio frequency pulse with the pulse width of 2.5 microseconds of the klystron can be compressed to 300ns, the average power gain in a single pulse is more than 4 times, the peak power gain is 6.3 times, and the compression efficiency is about 54%. According to the dual-polarization mode coupler, the functions of power distribution, mode conversion and polarization mode generation are synchronously realized, a TE10 mode in a rectangular waveguide is converted into two polarization TE11 modes which are equal in amplitude and orthogonal in phase, and then the two orthogonal TE114 modes are excited in a spherical energy storage cavity.

The invention relates to the field of particle accelerators, and provides a wire drawing device and a wire drawing method for a tension wire in a cold shield of a cryostat. The wire drawing device for the tension wire in the cold screen of the cryostat comprises a first bridging pipe, a second bridging pipe and an internal guide body, and the first bridging pipe and the second bridging pipe are inserted into the cold screen from the two opposite sides of a vacuum chamber of the cryostat respectively and connected with a tension wire instrument corresponding to the interior of the cold screen in a sleeved mode; the end, close to the second bridging pipe, of the first bridging pipe is provided with a first reducing section. Due to the fact that the inner diameter of the first reducing section is gradually increased in the direction close to the second bridging pipe, the end, close to the first bridging pipe, of the second bridging pipe can be easily inserted into the first reducing section, and the interior of the first bridging pipe and the interior of the second bridging pipe are communicated to form a wire guiding channel. Therefore, under the condition that the cover plate does not need to be opened, stable and lasting stretching of the linear reference can be rapidly achieved with high precision, the accuracy of deformation monitoring of the cryostat is ensured, and the experiment efficiency is improved.

A system is described that includes a sputter target and a magnetic element array including multiple sets of magnets arranged to have a Hall-Effect region that extends along a length of the sputter target. The elongated sputtering electrode material tube is interposed between the magnetic array and an object to be deposited with a sputtered material from the sputter target. During a direct current high-power impulse magnetron sputtering operation, the system performs a depositing on a surface of the object by generating and controlling an ion and neutral particle flux by: providing a vacuum apparatus containing a sputter target holder electrode; first generating a high-power pulsed plasma magnetron discharge with a high-current negative direct current (DC) pulse to the sputter a target holder electrode; and second generating a configurable positive voltage kick pulse to the sputter target holder electrode after terminating the negative DC pulse.

The present invention relates to the technical field of isotope production equipment and provides a target device for isotope production based on a high-current particle accelerator, comprising: a target chamber and a target assembly; the target chamber having an inner cavity and a side facing the beam having a plurality of beam holes arranged in an array, the beam holes being covered with target windows; the target assembly comprising a target frame; the target frames being arranged in a one-to-one correspondence with the target windows, and at least one mounting position for a target capsule being provided in the target frame in the axial direction of the beam holes; openings being provided on both sides of the target frame, and a plurality of target frames arranged in a preset direction forming a group; the side openings of the target frames in the same group corresponding to each other and forming independent coolant flow channels with the inner wall of the target chamber; each target capsule having a gap on both sides along the axial direction of the beam hole for coolant to flow through; and a plurality of water inlet holes and water outlet holes corresponding to the plurality of coolant flow channels being provided on both sides of the target chamber. This arrangement can effectively reduce the temperature rise of the target material under high beam intensities, enabling isotope production at beam intensities above the milliampere level.

The invention relates to the technical field of particle acceleration, in particular to a dipolar magnet, a combined magnet and a particle accelerator. The two-pole magnet comprises a first saddle-shaped winding and a second saddle-shaped winding which are oppositely arranged along the direction of a central ion beam current to form a main magnetic field structure; the pole head areas of the first saddle-shaped winding and the second saddle-shaped winding respectively extend towards the outer side far away from the central ion beam current direction to form an arch-shaped cavity penetrating through the two ends of the dipolar magnet; the runway-shaped coil comprises a first runway-shaped winding and a second runway-shaped winding, the first runway-shaped winding and the second runway-shaped winding are located in the arch-shaped cavity and correspond to the first saddle-shaped winding and the second saddle-shaped winding respectively, and the pole head area of the first runway-shaped winding and the pole head area of the second runway-shaped winding are adjacent to the pole head area of the saddle-shaped coil. While the contribution of the pole head position to the magnetic field of the good field area of the coil is ensured, the wire turn number density of the deflection section is obviously improved, thereby enhancing the magnetic field intensity.

The invention relates to the technical field of cooling of particle accelerators and nuclear power equipment, 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 shield assembly and a support assembly. The absorber assembly is formed by welding internal graphite and external copper through a brazing process, and air holes penetrating to a graphite layer are formed in the copper and communicated with an air cavity in the graphite to form a vacuum sealing cavity. The cooling water system assembly comprises a water segregator with two layers of water inlet ring cavities and two layers of water outlet ring cavities, and uniform flow distribution is ensured. And the absorber cooling water pipe is embedded into the copper and is connected with the U-shaped pipe to form a cooling loop. The electron beam bombards the graphite to generate heat, and the heat is transferred to the copper and taken away by cooling water in the cooling water pipe embedded in the copper. The shield assembly is arranged around the vacuum tube assembly to prevent radiation leakage. The cooling device realizes effective heat dissipation of 8GeV high-power rays, and has excellent radiation resistance and extremely long fatigue life.

The invention provides a beam loss front-end electronics system, a beam loss monitoring method and a beam loss monitoring system, and relates to the technical field of beam diagnosis, the system comprises at least two beam loss monitoring channels which are mutually independent, and each beam loss monitoring channel comprises a signal acquisition assembly and a signal output assembly, wherein the signal acquisition assembly is used for receiving a beam loss signal sent by a beam loss detector; the signal output assembly is used for determining a threshold voltage corresponding to the beam loss monitoring channel based on a preset beam loss parameter, and outputting a beam loss output signal based on the beam loss signal and the threshold voltage; the beam loss output signal comprises an original signal, an electric pulse signal and an optical pulse signal; the preset beam loss parameters are used for representing monitoring indexes of particle beams corresponding to different types of particle accelerators. According to the invention, the application range can be greatly expanded, and the applicability and the monitoring sensitivity are greatly improved.

The invention discloses a rotary positioning device of a particle accelerator, a control method and a treatment system, the rotary positioning device comprises a first guide piece, a second guide piece and a clamping device, one end of the first guide piece is connected with the second guide piece, and the other end of the first guide piece is connected with the clamping device; the first guide piece can slide relative to the second guide piece, the second guide piece can rotate around a fixed shaft, and the clamping device is used for clamping the particle accelerator and enabling the particle accelerator to rotate around a circle center shaft of the particle accelerator; wherein the first guide piece and the second guide piece are matched with each other to move, so that the particle accelerator moves on a circular arc with the to-be-treated part as the circle center, and the clamping device controls the particle accelerator to rotate in the process of moving on the circular arc, so that a beam outlet of the particle accelerator always faces the to-be-treated part. The rotary positioning device has the advantages of being easy to install, small in size and the like, the occupied space is smaller, and the rotary positioning device is easier to control in the actual application process.

The invention relates to the field of particle accelerators, in particular to an ultrahigh and extremely high vacuum acquisition system and method. The vacuum obtaining system comprises a vacuum obtaining device and a vacuum temperature control device, the vacuum obtaining device comprises a ceramic vacuum chamber, an interlayer vacuum chamber, a main pump chamber, a first vacuum pumping assembly and a second vacuum pumping assembly, the main vacuum chamber is formed in the ceramic vacuum chamber, and the ceramic vacuum chamber is arranged in the interlayer vacuum chamber; and an interlayer space is formed between the ceramic vacuum chamber and the interlayer vacuum chamber. The ceramic vacuum chamber is arranged in the interlayer vacuum chamber, the interlayer space is formed between the ceramic vacuum chamber and the interlayer vacuum chamber, and the interlayer vacuum chamber is heated through the heating element, so that the ceramic vacuum chamber is uniformly heated in a non-contact heat radiation uniform heating mode; the problem of thermal stress concentration caused by direct conduction heating of the ceramic vacuum chamber is thoroughly eliminated, leakage or fracture of the ceramic-metal joint caused by thermal stress is avoided, and the structural integrity of a heterogeneous material connecting area is ensured.

The invention belongs to the technical field of nuclear physics and particle accelerators, and relates to a high-precision wide-energy-spectrum neutron source target body structure applied to a spallation neutron source device. The method comprises the following steps: a tungsten target is adopted, and a 6cm thin target design is adopted; the cooling layer contains boron water and the like and can be used for cooling and slowing down neutrons; the moderation layer moderates the neutron energy spectrum to a thermal neutron energy region by using boron-containing water; the shielding layer is made of low-carbon steel and concrete to ensure radiation safety; the tail end of the neutron channel is connected with an experimental terminal; according to the thin target design, the energy resolution is improved, the energy resolution of neutrons below 100 keV is higher than 0.1%, and the energy resolution of neutrons below 1 MeV reaches 0.3%; the boron element reduces the gamma ray background; and the five neutron pore channels meet various requirements. The overall design realizes the effect required by the high-precision neutron experiment and improves the precision of the device.

A particle accelerator includes an acceleration cavity chain and at least one energy switch side cavity. The energy switch side cavity is communicated with two adjacent main cavities in the acceleration cavity chain through coupling openings respectively. The energy switch side cavity includes a pair of asymmetric side cavity noses arranged therein and an energy switch probe arranged at a top position thereof. The energy switch probe is configured to extend from the top position of the energy switch side cavity to a space between the pair of side cavity noses.

The invention relates to an isotropic thermal neutron radiation field angle distribution uniformity control device and method, and the device is characterized in that a particle accelerator is used for emitting a high-energy charged particle beam with a beam position; the beryllium target is placed along the emission line of the high-energy charged particle beam, and the high-energy charged particle beam bombards the beryllium target to generate charges; the insulation isolation gasket is wound on the outer side of the beryllium target and prevents the charges from being led out from the outside through the beryllium target; and the adjusting assembly is connected with the beryllium target and used for acquiring the electric charge quantity on the beryllium target, and is connected with the particle accelerator and used for adjusting the angle of the high-energy charged particle beam irradiating to the beryllium target. According to the invention, the purposes of preventing the charges from being exported outwards based on the insulation isolation gasket and obtaining the charge quantity by the adjusting assembly to adjust the particle accelerator are achieved, so that after the insulation isolation gasket with low cost is used for isolation, the charge quantity is detected to adjust the particle accelerator, and the technical effect of effectively saving the cost is achieved.

The invention discloses a beam debugging method, device and equipment for a particle accelerator and a medium, relates to the technical field of accelerator debugging, and aims to enable each iteration process to have clear data support and ensure the accuracy of a beam debugging result by splitting an accelerator beam debugging process into a stage-cured reproducible process. The method comprises the following steps: creating flow configuration information of a particle accelerator according to a beam debugging task; on the basis of setting a debugging target, performing iterative debugging on the particle accelerator by using the process configuration information so as to generate setting information of a control variable according to an observation variable obtained by each iterative debugging; applying the setting information of the control variable to the actual particle accelerator and / or the virtual particle accelerator to obtain the current beam state output by the actual particle accelerator and / or the virtual particle accelerator; and if the iteration debugging process meets the iteration termination condition, generating a first beam debugging result according to the current beam state.

The invention provides a particle accelerator beam pipeline support member design method and a support system, and relates to the technical field of particle accelerators, and the particle accelerator beam pipeline support member design method comprises the following steps: classifying devices on a beam transport line into interference source devices and sensitive devices based on the electromagnetic characteristics of the devices and the structural relationship between the devices and a beam pipeline; supporting pieces are independently configured for a beam pipeline and various devices, and specific electrical isolation, grounding and filtering measures are adopted for different device types: an interference source device is connected with an electrostatic protection ground and is added with a filter; sensitive equipment and a beam pipeline are electrically isolated and are connected with a signal ground. Through systematic supporting and grounding architecture design, a coupling path of electromagnetic interference is fundamentally cut off, electromagnetic noise on a beam pipeline is remarkably reduced, a clean reference ground is provided for beam diagnosis and other weak signal systems, and high-reliability and high-precision operation of an accelerator is guaranteed.

The present application belongs to the technical field of high-end medical equipment. Disclosed are a multi-room particle therapy room, a radiotherapy system, and a particle accelerator movement method. The multi-room particle therapy room comprises a plurality of treatment rooms. The radiotherapy system comprises the multi-room particle therapy room and a particle accelerator. Each treatment room is provided with a beam window. The particle accelerator can move outside different treatment rooms and is aligned with the beam windows. The particle accelerator directs particle beams into the treatment rooms by means of the beam windows. The particle beams perform radiotherapy by means of therapy heads in the treatment rooms. The radiotherapy system is not provided with a dipole magnet or a quadrupole magnet. The plurality of treatment rooms share one particle accelerator. The particle accelerator is moved to the outside of the treatment room requiring the particle beam, and the particle beam is directed into the treatment room by means of the beam window. When the treatment in the treatment room is completed, the particle accelerator is moved to other treatment rooms requiring the particle beams and performs treatment work, thereby reducing the overall cost of the radiotherapy system and making proton therapy accessible.

The invention discloses an FPGA-based particle accelerator beam position real-time self-calibration system, which comprises a beam acquisition and conversion module and an FPGA processing module, and is characterized in that the beam acquisition and conversion module is used for acquiring an analog signal of a beam in a particle accelerator pipeline, amplifying the analog signal and outputting the amplified analog signal to the FPGA processing module; the amplified analog signal is converted into a digital signal; the FPGA processing module is used for receiving the digital signals from the beam acquisition and conversion module in real time, performing digital filtering processing on the digital signals of the beam by using an LMS algorithm optimized by a genetic algorithm, then constructing a random forest prediction model, performing analysis and prediction on the filtered digital signals of the beam through the random forest prediction model, and outputting the result. And the current of the magnet and the voltage of the deflection plate are dynamically adjusted according to the analyzed and predicted result, so that the self-adaptive adjustment of the beam position of the particle accelerator is realized. According to the invention, the adaptive capability of the system is enhanced, so that the beam position of the particle accelerator is controlled more accurately and dynamically.

The invention provides a remote sealing device, and relates to the technical field of particle accelerators. The remote sealing device comprises a movable flange; one end of the corrugated pipe is fixedly connected with the movable flange, and the corrugated pipe is configured to compensate the axial displacement of the movable flange; one end of the connecting block is fixedly connected with the movable flange; the lead screw linear module is in sliding connection with the other end of the connecting block, and the guiding direction of the lead screw linear module is parallel to the axial direction of the corrugated pipe; and the connecting block is configured to drive the connecting block to move in the axial direction of the corrugated pipe through the lead screw linear module, so that the movable flange moves in the axial direction of the corrugated pipe.

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.

The invention provides a cyclotron electrostatic deflection plate beam loss heat source reconstruction method, and relates to the technical field of particle accelerator thermal analysis and multi-physics field coupling calculation, and the method comprises the steps: 1, configuring beam dynamics simulation parameters, multi-particle tracking is carried out under a three-dimensional field graph containing a central area electromagnetic field, a harmonic coil magnetic field and an electrostatic deflection electric field, and a particle loss list is generated; step 2, transferring the particle loss list into a beam source file of a Monte Carlo radiation transport program, configuring Monte Carlo parameters including a deflection plate material, a boundary, a particle type and an energy spectrum, executing particle transport simulation, and obtaining a three-dimensional energy deposition matrix on an electrostatic deflection plate element; according to the method, high-resolution heat source reconstruction is realized, the peak temperature rise calculation error of the deflection plate can be reduced, a temperature field solving result can be fed back to optimize the particle source, and a reliable basis is provided for thermal structure design and cooling optimization of the electrostatic deflection plate.

The invention relates to the technical field of particle accelerators, and provides a medium-assisted acceleration structure and method for realizing low loss and high acceleration gradient by using a low-temperature environment. The structure comprises a medium-assisted acceleration structure body and a low-temperature maintenance and control system, the medium-assisted acceleration structure body comprises a medium layer and a metal cavity to provide electromagnetic field distribution, and the low-temperature maintenance and control system is integrated on the body to maintain the working temperature of the body to be less than or equal to 77K, reduce resistance and dielectric loss and improve a radio frequency breakdown threshold; according to the invention, the radio frequency breakdown threshold is increased at a low temperature, so that the acceleration structure stably operates under higher electric field intensity, and the particle energy gain is increased; the metal resistivity and the dielectric loss are synchronously reduced, the total power loss is reduced, and the energy efficiency is improved; micro-discharge and gas desorption effects are inhibited, the structural stability is improved, and the service life of equipment is prolonged; through low-temperature adaptive design and systematic integration, electromagnetic performance and mechanical reliability are ensured, and the synergistic advantage of low temperature and medium assistance is exerted.

The invention relates to the technical field of particle accelerators, in particular to a compact rotary thin-wall beam transmission vacuum system and a design method. The beam transmission vacuum system comprises: a first transmission unit, one end of which is provided with a first bifurcated thin-wall dipolar iron vacuum chamber to form a first branch and a second branch; one end of the second transmission unit is connected with the second branch, and a second bifurcated thin-wall dipolar iron vacuum chamber and a third bifurcated thin-wall dipolar iron vacuum chamber are sequentially arranged in the second transmission unit to form a third branch, a fourth branch and a fifth branch; the fixed treatment terminal is connected with the first branch; and rotating the treatment terminal to provide the beam to one of the plurality of treatment rooms in an alternative manner. According to the invention, an intensive architecture that a single rotary treatment terminal provides particle beams for a plurality of treatment rooms at the same time is adopted, so that the equipment manufacturing cost is greatly reduced, the equipment utilization rate is improved, and the treatment cost is reduced.

The present invention provides a method and device for increasing the beam duty cycle by using colored noise, and relates to the field of particle accelerators and signal processing technology. The method comprises: generating a digital noise signal through a finite impulse response filter; converting the digital noise signal into two branch signals of equal magnitude and opposite sign through a phase shifter; and loading the two branch signals onto a transverse electrode plate after each of the two branch signals passes through an attenuator, an amplitude modulator, an impedance converter, and an all-pass network in sequence, thereby obtaining an extracted beam subjected to transverse excitation. The present invention can effectively improve the impact of the current traditional RF-KO sweep mode on beam extraction, making the time structure of the slow extraction beam more uniform, promoting the widespread application of precise point scanning, and improving treatment efficiency.

The invention discloses a scattering method embedded vacuum dust particle counter, and relates to the technical field of particle accelerators and superconductors and the field of semiconductors. Comprising a detection cavity, a particle detection assembly, an electronic component and an electric signal penetrating assembly, the two sides of the detection cavity are provided with embedded interfaces connected with a vacuum system, the particle detection assembly is embedded into the detection cavity, the electronic component is installed at one end of the detection cavity, and one end of the electric signal penetrating assembly is connected into the electronic component. The other end penetrates through the detection cavity, extends into the detection cavity and is electrically connected with the particle detection assembly; the particle detection assembly comprises a supporting frame, a scattered light signal receiver and a light trap, the scattered light signal receiver is arranged on the supporting frame in the direction perpendicular to the laser, and the light trap is arranged outside the dust passing window and on the supporting frame at the tail end of the laser beam. According to the counter disclosed by the invention, the application scene is expanded, and the dust particles carried by the gas flow in the vacuum state can be monitored on line.

The invention relates to an experimental platform for particle accelerator material irradiation, which comprises a six-dimensional mechanical arm, a camera and light spot identification system, a rotary grasping clamp and an integrated control system, and is characterized in that the camera and light spot identification system is used for acquiring a particle beam light spot image on a scintillator in real time, and transmitting data to the integrated control system; the integrated control system accurately calculates the real-time spatial position deviation of the sample relative to the center of the irradiation beam; then the six-dimensional mechanical arm is driven to dynamically adjust the posture compensation deviation, and meanwhile, the rotary gripper is controlled to stably clamp the sample and rotate by 360 degrees, so that accurate and flexible positioning, uniform irradiation, stable clamping and real-time monitoring and correction of the sample are realized, and the precision, reliability and efficiency of an experiment are improved; and an efficient, stable and intelligent experimental tool is provided for particle accelerator material irradiation research.

The invention provides an online self-checking method and system for a parallel plate ionization chamber and a beam loss monitoring system, and relates to the technical field of particle accelerators, the parallel plate ionization chamber comprises a bias pole plate and a signal pole plate, and a composite voltage formed by superposing a DC bias voltage and a preset low-frequency AC oscillation voltage is applied to the bias pole plate; a test current with the same frequency as the low-frequency alternating-current oscillation voltage is induced on the signal pole plate by using the natural capacitance between the bias pole plate and the signal pole plate; the test current is collected and analyzed to obtain at least one preset characteristic parameter, and the characteristic parameter comprises a quantity related to the magnitude or period of the test current; and comparing the characteristic parameters with a preset reference value so as to judge the health states of the parallel plate ionization chamber and the signal measurement link thereof. According to the invention, a radioactive source and a complex mechanical structure do not need to be additionally arranged, and online self-inspection with high reliability and comprehensive diagnosis of the parallel plate ionization chamber can be remotely realized.

The present disclosure provides an ultra-thin vacuum transition device and pressure difference elimination system, which can be applied to the field of particle accelerator technology. The vacuum transition device comprises: a vacuum transition film configured as a non-metal film with a thickness less than 0.1 mm, two sealing connectors respectively arranged on both sides of the vacuum transition film and connected to a particle beam pipeline. The vacuum transition device can realize the transition of the vacuum gradient in a super wide range while greatly reducing the energy loss of the particle beam. The pressure difference elimination system can accurately control the pressure on both sides of the vacuum transition film during the vacuum pumping and air amplification stages, thereby eliminating the pressure difference on both sides of the vacuum transition film during use to avoid bearing a large gas pressure, which can significantly reduce the risk of film structure damage, greatly increase the service life of the vacuum transition film, and ensure that the ultra-thin film structure vacuum transition device can realize long-term safe and stable operation.