1092results about "Accelerators" patented technology

The utility model relates to the technical field of electron beam transmission, in particular to a magnet system. Comprising a first shaping unit and a second shaping unit, and the first shaping unit comprises first quadrupole iron tightly attached to an outlet of the accelerating tube and first octupole iron arranged at the focus position of the first quadrupole iron; the second shaping unit comprises second quadrupole iron and second octupole iron, the second quadrupole iron and the first octupole iron meet a first preset distance, the second octupole iron is arranged at the focus position of the second quadrupole iron, and the second shaping unit and the radiation field area meet a second preset distance; the inner diameter of the first octupole iron and the inner diameter of the second octupole iron are both larger than or equal to the maximum size of an electron beam group. Therefore, the quadrupole iron and the octupole iron are utilized to form the shaping unit which is homogenized in one direction, so that the problems that in the prior art, in the electron beam transmission process, a large amount of dose is lost, the size of a radiation field is limited, and the radiation field cannot be adjusted at will are solved; therefore, the electron beam bunch generated by the linear accelerator can be expanded and homogenized in a short distance.

The invention discloses a linear beam homogenization transmission line debugging method based on a four-and-eight-pole composite magnet, and the method comprises the steps: adjusting the current of four-pole iron, and enabling the X-direction beam near the four-and-eight-pole composite magnet 1 to form a waist; the current of the quadrupole iron of the quadrupole-octupole composite iron 1 is adjusted, so that the Y-direction beam near the quadrupole-octupole composite iron 2 forms a waist; when the octupole field current of the fourth-and-eighth-level composite iron 1 is adjusted, the current of the intersection point is obtained for the second time; when the octupole field current of the fourth-and-eight-level composite iron 2 is adjusted, a method of combining intersection point current and quadrupole iron current increase is adopted. According to the invention, through a method of forming a waist in an X-direction beam near the four-eight-pole composite iron 1, forming a waist in a Y-direction beam near the four-eight-pole composite iron 2, and combining dynamic intersection points and adjustment of current of the four-pole iron, the problem that a transmission line based on discrete components of the four-pole iron and the eight-pole iron in the prior art is poor in transmission efficiency is solved. And the beam homogenization debugging of octopole iron is difficult to homogenize the Gaussian distribution beam.

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 discloses a point light source electron accelerator which comprises a sealing box body, a cathode, a laser emitter, a reflecting cover, a grid plate and a mounting plate, the mounting plate is erected in the sealing box body, a mounting hole is formed in the mounting plate, the cathode is mounted in the mounting hole, and the laser emitter is arranged in the sealing box body. The reflecting cover is arranged at the top of the mounting hole; the reflecting cover is a semi-spherical surface, a laser through hole is formed in the top of the semi-spherical surface, and the laser through hole is coaxial with the cathode; the transmitting end of the laser transmitter is aligned with the cathode; the grid plate is mounted below the mounting plate and is aligned with the mounting holes; and an electron outlet is formed below the grid plate. The invention provides a point light source electron accelerator, and the point light source electron accelerator provides a light and miniaturized electron accelerator design, so that the application field of the accelerator is wider.

The invention discloses an exciting current adjusting method for four-pole / eight-pole composite iron. The exciting current adjusting method comprises the following steps: establishing a two-dimensional data comparison table of coil currents of four-pole iron and eight-pole iron; performing experimental measurement to obtain a quadrupole field magnetic field gradient three-dimensional curved surface sample database and an octupole field magnetic field gradient three-dimensional curved surface sample database; performing two-dimensional interpolation on the magnetic field gradient three-dimensional curved surface sample database by using a cubic spline function; a quadrupole field magnetic field gradient plane and an octupole field magnetic field gradient plane are selected and intersect with the quadrupole field magnetic field gradient three-dimensional curved surface sample database curved surface and the octupole field magnetic field gradient three-dimensional curved surface sample database curved surface respectively, and current curves meeting the quadrupole field gradient and the octupole field gradient are obtained; and obtaining an intersection point of the two curves, and using the intersection point as a solution of the compound iron exciting current. According to the invention, based on magnetic field measurement data under a few groups of excitation currents, a large amount of excitation current debugging time is saved, and accurate adjustment of the magnetic field gradient of the composite multi-pole magnet can be realized.

The invention relates to the technical field of medical RFQ accelerators, and particularly discloses a medical RFQ accelerator multi-safety redundancy linkage protection system and method, and the method comprises the steps: collecting the working state image data of an accelerator, and generating a three-dimensional fusion feature map containing heat distribution, electromagnetic radiation intensity and mechanical vibration; a multi-dimensional safety index evaluation vector is output by using a multi-mode Transform model; constructing a dynamic safety boundary prediction model, and generating a real-time safety threshold curve of each subsystem according to the evaluation vector; performing parameter optimization by adopting a federated learning framework; constructing a non-tampering security event traceability chain by using a block chain; constructing a multi-stage protection strategy of the medical RFQ accelerator; and verifying the redundancy control channel through a cross-layer security verification mechanism, and finally executing a protection action. According to the invention, multiple safety redundancy protection of the medical RFQ accelerator is realized, the risk of false shutdown is reduced, and the requirement of high reliability of clinical radiotherapy is met.

The invention relates to a cutting magnet for a miniaturized particle accelerator, and the cutting magnet comprises a magnet core which is of an upper and lower half structure, the large-diameter end of the magnet core is provided with a notch groove, the notch groove is an air gap, and the inner wall of the notch groove forms a pole face; the magnet exciting coil comprises a saddle-shaped coil body formed by winding a plurality of turns of wires, and the multiple turns of wires at the inlet end and the outlet end of the saddle-shaped coil body are vertically arranged at intervals. The coil main body is embedded into an air gap of the magnet core; the plurality of turns of wires at the inlet end and the outlet end of the coil main body are respectively welded with the power connection copper bar, so that the plurality of turns of wires are connected in series, and the power connection copper bar is used for being connected with an external cable. The structure is simple, installation is convenient, and the installation space and the manufacturing cost are saved.

The invention relates to an online three-dimensional adjusting device and method for a dipolar magnet vacuum chamber of a rotating rack, and the device comprises a pipeline clamping mechanism which is used for clamping the vacuum chamber; the driving and adjusting assembly comprises an X-axis transverse adjusting unit, a Y-axis longitudinal adjusting unit and a Z-axis vertical adjusting unit, the X-axis transverse adjusting unit is vertically arranged on a moving part of the Y-axis longitudinal adjusting unit, and the Z-axis vertical adjusting unit is connected with the moving part of the X-axis transverse adjusting unit; the pipeline clamping mechanism is connected with the Z-axis vertical adjusting unit; and the controller is in communication connection with the driving and adjusting assembly and is used for acquiring position information of the vacuum chamber and analyzing position errors so as to control the driving and adjusting assembly, so that the three-dimensional space position of the vacuum chamber is adjusted. The device solves the problem that the interior of a vacuum chamber cannot be adjusted when a dipolar magnet is installed in an abnormal posture at present.

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 relates to a high-speed directional molecular flow generating device and application thereof. The device comprises an air supply system, an ion source, a grid electrode assembly, a neutral pore plate and a charged particle swallowing device, the gas supply system is communicated with the gas inlet end of the ion source through a pipeline and provides neutral gas for the ion source; the ion source is used for ionizing the neutral gas into plasma, and the gas outlet end of the ion source is sequentially connected with the grid electrode assembly, the neutral pore plate and the charged particle swallowing device in series; the grid electrode assembly is used for extracting ions, accelerating ions and focusing ions; the neutral pore plate is grounded and is used for enabling passing ion beams to be subjected to an Auger process and converting ions into neutral molecules; and the charged particle swallowing device is used for absorbing unconverted ions and drift electrons. According to the invention, the complexity is low, the generated high-speed oriented molecular flow has good collimation, and an important experimental basis is provided for development and ground calibration of a space vacuum measuring instrument.

A machine, article, process of using, process of making, products produced thereby and necessary intermediates. Illustratively, there can be a process that includes: ionizing at least some injected gas to form ions; confining, without using magnetic fields, at least some of said ions to produce confined ions; accumulating at least some of said confined ions to produce accumulated ions; cooling at least some of said accumulated ions to produce cooled ions; compressing, without using magnetic fields, at least some of said accumulated ions to produce compressed ions; accelerating at least some of said compressed ions to produce accelerated ions; ejecting at least some of said accelerated ions; and measuring at least one property of said ejected ions.

The invention relates to the technical field of refrigeration control, in particular to a water cooling system, a control method and a first-stage water cooling assembly, the water cooling system comprises a first circulation loop piece, a first control piece and a first adjusting piece, the first control piece is arranged on the first circulation loop piece, and the first adjusting piece is arranged on the first circulation loop piece; the second-stage water cooling assembly comprises a second circulation loop piece, a second control piece and a second adjusting piece, the second circulation loop piece is arranged on the first control piece and the first adjusting piece, the second control piece is arranged on the second circulation loop piece, the second adjusting piece is arranged on the second circulation loop piece, and the second control piece is arranged on the second circulation loop piece. Through interaction between the first-stage water cooling assembly and the second-stage water cooling assembly and combination of fuzzy control through PID, when semiconductor equipment and a particle accelerator operate, the water inlet temperature of a load can be accurately controlled.

Disclosed in the present invention are a scanning box device and an electron accelerator, the electron accelerator comprising an accelerating tube and a deflection coil; the scanning box device comprising a scanning chamber and a scanning box, wherein the scanning chamber is sealingly connected to the scanning box; the scanning chamber is arranged above the scanning box; the accelerating tube is arranged above the scanning chamber; the deflection coil is arranged on the outer side of the scanning chamber; and the scanning chamber is made of a non-metallic material. The present invention can prevent the generation of eddy currents in the scanning box, thus reducing the problems of energy loss and heat generation, improving the performance and stability of the apparatus.

The invention relates to the technical field of ion beam tubes, in particular to a titanium alloy lining dipolar iron pipeline treatment method which comprises the steps that a getter film is deposited on the inner wall of a dipolar iron pipeline; the dipolar iron pipeline is installed in an extremely high vacuum system to be subjected to vacuum baking activation; the dipolar iron pipeline is cooled through a low-temperature medium, so that the temperature of the getter film reaches a first set temperature; and continuously introducing a low-temperature medium into the cooling pipeline, and meanwhile, keeping an ion pump of the extremely high vacuum system in a working state until the target ultimate vacuum degree is obtained. According to the scheme, the defects that in the prior art, the vacuum degree of a titanium alloy lining dipolar iron pipeline is reduced in a high-temperature environment and the adsorption capacity of a getter film is reduced are overcome, and the purposes of improving the vacuum degree of the pipeline and enhancing the beam stability are achieved.

The invention relates to a beam feedback system based on radio frequency direct acquisition, which comprises a beam position detector, a sum and difference device, a front-end processing module, a feedback processor and an amplification excitation module which are connected in sequence, the sum-difference device is used for determining a horizontal position signal, a vertical position signal and a longitudinal position signal of the beam bunch according to the position signal of the beam bunch, the front-end processing module is used for pre-processing the position signals of the beam bunch, and the feedback processor is used for sampling the pre-processed position signals of the beam bunch; the feedback module is used for receiving a beam bunch and generating a horizontal feedback signal, a vertical feedback signal and a longitudinal feedback signal of the beam bunch, and the amplification excitation module is used for amplifying the feedback signals of the beam bunch and acting the amplified feedback signals of the beam bunch on the beam bunch, so that the instability of the beam is inhibited.

A system for mitigating backsputter to a thruster in a propulsion test facility includes a plate disposed in an output plume of the thruster and a magnetic field generator disposed about or at the plate and configured to generate a magnetic field between the thruster and the plate. The magnetic field generator is oriented such that a magnetic field is generated transverse to the output plume.

The invention provides a medical accelerator beam excitation device and a control method thereof, and belongs to the technical field of medical accelerators, and the medical accelerator beam excitation device comprises an integrated exciter which comprises a horizontally arranged first electrode pair and a vertically arranged second electrode pair; the excitation signal source is used for generating a working point excitation signal or a slow extraction excitation signal; the excitation signal source outputs a working point excitation signal or slowly leads out the excitation signal to the power amplification and routing module, and the power amplification and routing module is used for performing power amplification on the received excitation signal and routing the amplified excitation signal to the first electrode pair or the second electrode pair; and the first electrode pair and the second electrode pair are used for applying an excitation effect on the beam current according to the amplified excitation signal. According to the application, the excitation electrode and the power amplification link can be multiplexed, and two functions of working point excitation and slow extraction excitation can be simultaneously realized on one set of device, so that the space of the accelerator is effectively saved.

The invention discloses a compact accelerator extremely-high vacuum system and an implementation method thereof. The compact accelerator extremely-high vacuum system comprises a dipole iron vacuum chamber, a BUMP iron vacuum chamber, a BPM cavity, a vacuum pump chamber and a quadrupole iron vacuum chamber which are sequentially connected to form a beam main line. A plurality of non-evaporable getter sheets are arranged in the dipole iron vacuum chamber and the quadrupole iron vacuum chamber in an array manner and are used for extracting active gas in a beam main line to obtain extremely high vacuum; a vacuum measuring gauge tube, a sputtering ion pump, a molecular pump and a gate valve are installed on the vacuum pump chamber, the vacuum measuring gauge tube is used for measuring the vacuum degree in the beam main line, the sputtering ion pump is used for extracting argon and methane in the beam main line and conducting baking, and the molecular pump is used for rough extraction of the beam main line and exhaust in the baking process; the gate valve is used for separating the molecular pump from the beam main line. According to the invention, hydrogen, carbon monoxide and other active gases in the system can be extracted under the condition that a titanium sublimation pump cannot be installed due to insufficient space, so that extremely high vacuum can be obtained.

The invention relates to the technical field of high-energy physical equipment, and discloses a vacuum box of an undulator and a manufacturing method of the vacuum box. A vacuum cartridge of an undulator includes a first half-shell and a second half-shell. The first half shell is provided with a first beam groove extending in the length direction of the first half shell. The second half shell is provided with a second beam groove extending in the length direction of the second half shell, and the first half shell and the second half shell are arranged independently. The first half shell is provided with a first welding structure, the second half shell is provided with a second welding structure, the first welding structure and the second welding structure are welded, and the second beam groove and the first beam groove form a beam channel. According to the undulator, the vacuum box of the undulator is arranged to be of the split type structure formed by welding and connecting the first half shell and the second half shell, so that the first half shell and the second half shell can be machined in the manufacturing process, and the machining precision is guaranteed. Moreover, by arranging the first welding structure and the second welding structure which are used for welding, the influence of welding heat and welding stress on the size and form and location tolerance of the vacuum box of the undulator in the welding process is reduced.

Provided is a superconducting cryo module that can be made more compact. A superconducting cryo module according to the present disclosure comprises: a superconducting accelerating cavity that has a cell part accelerating electrons, a beam pipe part extending from the cell part to an electron incidence side, and an extraction part of the electrons which were accelerated by the cell part; and an electron gun that is located in the interior of the beam pipe part of the superconducting accelerating cavity, is located on the same axis as a beam axis BA of the superconducting accelerating cavity, and emits electrons into the cell part.

The invention provides a compact synchrotron vacuum system and a design method, and relates to the technical field of particle acceleration. The vacuum system comprises a first vacuum unit and a second vacuum unit, the first vacuum unit comprises at least two first beam deflection vacuum tubes, and the adjacent first beam deflection vacuum tubes are connected through a first beam regulation and control vacuum tube; the second vacuum unit comprises at least two second beam deflection vacuum tubes, and the adjacent second beam deflection vacuum tubes are connected through a second beam regulation and control vacuum tube; a second beam deflection vacuum tube at one end of the second vacuum unit is connected with a first beam regulation vacuum tube at the first end of the first vacuum unit, and a second beam deflection vacuum tube at the other end of the second vacuum unit is connected with a first beam regulation vacuum tube at the second end of the first vacuum unit; and a beam diagnosis element is arranged in the first beam regulation and control vacuum tube of the first vacuum unit, so that the perimeter of the vacuum system can be shortened, and the popularization difficulty of the medical accelerator treatment device in small and medium-sized medical institutions is reduced.

The invention discloses a particle accelerator system loop parameter on-line intelligent regulation and control method and device based on a large language model, and the method comprises the steps: obtaining the cavity operation data of a radio frequency cavity in real time, calculating the system state parameter of the current cavity, judging whether the system state parameter meets an adjustment and optimization termination condition or not, and continuing if the adjustment and optimization termination condition is not met; converting the system state parameter and the PI parameter tuning target into a structured system state description described by a natural language, and generating a task execution cue word; analyzing a system state by using a large language model based on the task execution cue word, and reasoning a PI parameter value; analyzing the output of the large language model, accurately extracting PI parameter values, and performing rationality check on the accurately extracted PI parameter values; and performing application execution on the extracted PI parameter value, and repeating the tuning process until tuning is completed. Therefore, an effective solution is provided for automatic PI parameter tuning, and the time cost and professional skill requirements of manual debugging are remarkably reduced while the quality of tuning is ensured.

An annular apparatus is provided for generating accelerated electrons, wherein ions from a glow discharge plasma may be accelerated onto the surface of an annular second cathode and electrons emitted by the annular second cathode may be accelerated towards an annular electron exit window by a second electrical voltage applied between the annular second cathode and an annular second anode, wherein a housing is designed as a first cathode; a first anode comprises a number of wire-like electrodes which extend completely or partially through an annular evacuable space, and wherein a second reservoir contains a hydrocarbon-containing compound which may be admitted into the evacuable space through the at least one first inlet.

The utility model discloses a beam scraping device structure for a beam line of an ion implanter, which relates to the technical field of high-energy physical experiments and accelerators and comprises a beam scraping device, the beam scraping device is integrally machined and formed, and the beam scraping device is of a structure with a square rod in the middle and disc flanges at two ends. Beam channels are formed in the middles of the two ends of the beam scraping device. The cross section of the beam channel is square and is adjusted according to the shape of the beam. A plurality of round holes are formed in the disc flange-shaped surfaces at the two ends of the beam scraping device, and the two ends of the beam scraping device are connected with the beam line main pipeline through the plurality of round holes. Two U-shaped tubular water cooling flow channels are formed in the middle of a square rod in the middle of the beam scraping device, and an inlet and an outlet are formed in the positions, on the surface of the beam scraping device, of the two ends of each water cooling flow channel respectively. The utility model relates to a beam scraping device with a long beam pipeline. The utility model relates to a beam scraping device with a water cooling structure. According to the beam scraping device, an integral processing mode is adopted, and a beam channel is processed in a wire cutting mode.

A seal for a vacuum chamber is formed from two outer insulation blocks (14), (16), an intermediate insulation block (34), (36), some interior insulation sheets (74), (76), (78) and some exterior insulation sheets (80), (82), (84). A first outer insulation block (14) seals between a first wall (2) of the vacuum chamber and a first power transmission plate (10). A second outer insulation block (16) seals between a second wall (4) of the vacuum chamber and a second power transmission plate (12). The intermediate insulation block seals between the first and second power transmission plates. The interior insulation sheets are arranged in slots (62), (64), (66) in a first side of the intermediate insulation block. The exterior insulation sheets are arranged in the slots (68), (70), (72) in a second side of the intermediate insulation block.

A device for measuring a quantity representative of a population (N) of cold atoms, the cold atoms being located in a cloud of cold atoms to be analyzed, the device includes a microwave source configured to generate an incident signal at a predetermined signal frequency, a microwave guide configured to propagate the incident signal and an antenna configured to emit the incident signal to the cloud of cold atoms and its environment, the antenna and the microwave guide also being able to recover an atomic reflected signal resulting from a reflection of the incident signal by the cloud and its environment, and which propagates in the waveguide in the opposite direction to the incident signal, a splitting device coupled to the microwave guide and configured to extract at least part of the atomic reflected signal, a detector configured to detect the atomic reflected signal extracted by the splitting device, the quantity representative of the population of cold atoms (N) being obtained from a detected value of the atomic reflected signal and from a detected value of a signal reflected by the environment in the absence of the cloud, called reference reflected signal.

A Flash beam dose control method and a related device. The Flash beam dose control method comprises: obtaining a Flash beam output dose demand; controlling, by means of a Flash tuning mode, the number of pulse periods of output beam charges within a preset time; and / or controlling the pulse width of an ion source voltage by means of a pulse width mapping curve, so as to control a Flash beam output dose rate. By precisely controlling the number of pulse periods of output beam charges and the pulse width of the ion source voltage, the Flash beam output dose rate can be precisely controlled without requiring an additional shielding function for a proton therapy room, so that the dose of Flash can also be tuned in a conventional proton therapy room, thereby facilitating implementation of particle Flash radiotherapy.

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 utility model discloses a tool mounting frame device applied to an accelerating tube in a BNCT accelerator, and particularly relates to the technical field of accelerators, which comprises a loading reference platform combination, a flange centering device, a ceramic / electrode profiling combination, an electrode profiling combination and a pressing device combination. According to the utility model, the two first M12 nuts are arranged to adjust the height of the loading reference platform, so that the efficiency of adjusting the included angle between the loading reference platform and the horizontal plane is improved; a flange centering device is used for rapidly positioning the accelerating tube lower flange, the ceramic ring and the electrode explorator; the positioning efficiency and accuracy of the ceramic ring and the electrode are improved by utilizing the ceramic / electrode profiling, and the coaxiality is ensured; the positioning efficiency and accuracy of the electrode are improved by utilizing the electrode explorator, and the coaxiality of the electrode is ensured; and the positioning locking tool, the welding pressing plate tool and the second M12 nut are used for rapidly pressing the ceramic ring, and axial pressure applied by the tool is completed.