Accelerator ion source power supply transmission system of 2.5 MV silicon rectifier stack high-voltage platform

Abstract

The invention discloses an accelerator ion source power supply transmission system of a 2.5 MV silicon rectifier stack high-voltage platform, which comprises a silicon rectifier stack high-voltage power supply, a high-voltage lead transmission device, a generator power supply device, an ion source device, an accelerating tube and a target material, and is characterized in that the silicon rectifier stack high-voltage power supply comprises a silicon rectifier stack, a silicon stack anode terminal and a silicon stack cathode terminal; the high-voltage lead transmission device comprises a silicon stack cathode lead column and a high-voltage lead column, and the generator power supply device comprises a generator, a generator stainless steel cover, a voltage stabilizer, an isolation transformer, an insulation rotating shaft and a motor. The ion source device comprises an ion source stainless steel cover, an extraction electrode direct current power supply, a suppression electrode direct current power supply, a radio frequency power supply, a matcher and an extraction electrode. By adopting the power supply transmission system, the structure is compact, isolated power supply can be provided for each device of the accelerator ion source working on a 2.5 MV high-voltage platform, and the isolated power supply cost is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of accelerators, and in particular to an accelerator ion source power supply transmission system of a 2.5MV silicon rectifier stack high-voltage platform. Background Art

[0002] Accelerators are used to accelerate protons and strike targets to produce high-yield neutrons, which have a wide range of application needs in the fields of detection, medical imaging, cancer treatment, and nuclide preparation. The 2.5MV high voltage required by the electrostatic accelerator can be achieved by converting high-frequency AC into high-voltage DC through a rectifier silicon stack. The ion source equipment works on the accelerator high-voltage platform. Considering the compact installation requirements, the high-voltage output of the horizontal silicon rectifier stack is connected to the top of the vertical accelerating tube. The ion source equipment is installed on the top of the accelerating tube. The charged particles generated by the ion source enter the accelerating tube under the action of the extraction electrode electric field and obtain acceleration energy. In order to ensure the normal operation of the ion source equipment at the top of the accelerating tube, the 2.5MV DC high voltage output by the rectifier silicon stack is required as the ground potential. At this time, the ion source equipment needs to establish a power supply system that can operate on the high-voltage platform. The power supply system needs to withstand 2.5MV high-voltage isolation. Therefore, the motor drives the insulated shaft to transmit energy to the generator. The generator provides the required potential and power output for the ion source equipment through the voltage regulator and isolation transformer. There is no perfect ion source and accelerator power supply transmission system in the prior art, which can provide stable isolated power supply for ion source equipment running on a 2.5MV silicon rectifier stack high-voltage platform. Summary of the invention

[0003] The main purpose of the present invention is to provide an accelerator ion source power supply system, and the ion source can stably operate on a 2.5MV silicon rectifier stack high voltage platform.

[0004] The present invention provides the following technical solutions: an accelerator ion source power supply transmission system of a 2.5MV silicon rectifier stack high-voltage platform, comprising a silicon rectifier stack high-voltage power supply, a high-voltage lead transmission device, a generator power supply device, an ion source device, an accelerating tube, and a target material;

[0005] The silicon rectifier stack high voltage power supply comprises a rectifier silicon stack, a silicon stack anode terminal, and a silicon stack cathode terminal;

[0006] The high-voltage lead transmission device includes a silicon stack cathode lead column and a high-voltage lead column;

[0007] The generator power supply device comprises a generator, a stainless steel cover of the generator, a voltage stabilizer, an isolation transformer, an insulating shaft, an extraction pole DC power supply, a suppression pole DC power supply, and a motor;

[0008] The ion source device comprises an ion source stainless steel cover, a radio frequency power supply, a matcher, and an extraction electrode.

[0009] The present invention has the following beneficial effects:

[0010] The present invention is an accelerator ion source device, and proposes a power transmission system with a compact installation structure. The ion source device and a 2.5MV silicon rectifier stack high-voltage power supply are installed inside a sealed container filled with sulfur hexafluoride insulating gas, which can increase the critical breakdown voltage between the various components of the accelerator relative to the atmospheric environment and reduce the risk of equipment ignition and breakdown, thereby providing environmental conditions for the compact structure of the accelerator system as a whole. The ion source device is encapsulated inside a sealed container and uses a generator power supply device that is also installed inside the sealed container. It has both isolated power supply for the ion source device and compact requirements, realizing a horizontal silicon rectifier stack, a vertical generator power supply device, and a vertical ion source and an accelerating tube. The overall three-cavity angle ruler-type integrated installation structure.

[0011] Furthermore, the ion source power supply transmission system proposed in the present invention adopts a generator, a motor, an insulating shaft, and a voltage stabilizer device to achieve isolated power supply under a high potential difference of up to 2.5MV, and has the advantages of relatively simple design structure, convenient debugging and maintenance, and low cost. The power supply power is not less than 3kW, which can meet the power supply requirements of ion source equipment using inductively coupled plasma generation technology.

[0012] The silicon stack cathode lead column and high-voltage lead column adopt a coaxial core wire installation structure to transmit the 2.5MV high-voltage potential to the subsequent stage and provide accelerated DC high voltage for the charged particles generated by the ion source equipment. The extraction-stage DC power supply, suppression-stage DC power supply, and isolation transformer equipment are placed on the generator equipment platform in the middle cavity of the sealed container, and the RF power supply, matching device, and ion source electrode equipment are placed on the ion source equipment platform in the side cavity of the sealed container to pass through the power supply transmission line of the middle thin-walled hollow high-voltage lead column to provide the required power or potential for the ion source equipment platform. The placement of each device in the separate cavity of the sealed container greatly reduces the space and structural load-bearing requirements of each high-voltage platform of the overall accelerator system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0014] Figure 1 This is the overall longitudinal cross-sectional view of the accelerator ion source power supply transmission system of the 2.5MV silicon rectifier stack high voltage platform;

[0015] Figure 2A longitudinal sectional view of the generator power supply device;

[0016] Figure 3 It is a longitudinal cross-sectional view of the ion source device and the accelerating tube;

[0017] Figure 4 It is a radial cross-sectional view of the high voltage lead column;

[0018] Figure 5 This is the working diagram of the accelerator ion source power supply transmission system of the 2.5MV silicon rectifier stack high voltage platform.

[0019] Description of Figure Numbers:

[0020] DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0025] Finally, it should be noted that the embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

[0026] like Figure 1-5As shown, an accelerator ion source power supply transmission system of a 2.5MV silicon rectifier stack high-voltage platform of the present invention includes a silicon rectifier stack high-voltage power supply, a high-voltage lead transmission device, a generator power supply device 9, an ion source device 10, an accelerating tube 6, and a target material 7;

[0027] The silicon rectifier stack high voltage power supply comprises a rectifier silicon stack 2, a silicon stack anode terminal 1, and a silicon stack cathode terminal 3;

[0028] The high-voltage lead transmission device includes a silicon stack cathode lead column 4 and a high-voltage lead column 5;

[0029] The generator power supply device 9 includes a generator 16, a generator stainless steel cover 11, a voltage stabilizer 12, an isolation transformer 14, an insulating shaft 17, an extraction pole DC power supply 13, a suppression pole DC power supply 15, and a motor 18;

[0030] The ion source device 10 includes an ion source stainless steel cover 20 , a radio frequency power supply 19 , a matcher 21 , and an extraction electrode 22 .

[0031] The main purpose of the present invention is to provide an accelerator ion source power supply system, and the ion source can stably operate on a 2.5MV silicon rectifier stack high voltage platform.

[0032] The motor 18 is installed and fixed at the bottom position of the middle cylinder of the sealed container 8; the rotating shaft of the motor 16 is coaxially connected with the insulating rotating shaft 17, and extends to be connected to the rotating shaft of the generator 16; the generator 16 is supported by an insulating panel, and the outer casing of the generator 16 is respectively connected to the cathode lead column 4 and the high-voltage lead column 5 of the silicon stack through the generator stainless steel cover 11; the output end of the generator 16 is connected to the input end of the voltage regulator 12; the output end of the voltage regulator 12 is respectively connected to the lead-out DC power supply 13, the suppression DC power supply 15 and the input end of the isolation transformer 14; the grounding end of the voltage regulator 12 is connected to the generator stainless steel cover 11; the high-voltage output end of the lead-out DC power supply 13 is connected to the lead-out power supply high-voltage transmission line 26; the high-voltage output end of the suppression DC power supply 15 is connected to the suppression power supply high-voltage transmission line 26.

[0033] The high-voltage lead column 5 described in the present invention includes an isolation transformer output neutral line 24, an isolation transformer output live line 25, a lead-out power supply high-voltage transmission line 26, and a suppression power supply high-voltage transmission line 27; the high-voltage lead column 5 is a hollow aluminum conductive column with a thin wall in the middle; both ends of the high-voltage lead column 5 have holes for the power supply transmission line to pass through; the isolation transformer output neutral line 24, the isolation transformer output live line 25, the lead-out power supply high-voltage transmission line 26 and the suppression power supply high-voltage transmission line 27 pass through the holes at both ends of the high-voltage lead column 5, thereby realizing the conductive transmission connection of the equipment at both ends of the high-voltage lead column 5.

[0034] The ion source device 10 of the present invention comprises a radio frequency power supply 19, an ion source stainless steel cover 20, a matcher 21, an extraction electrode 22, and a suppression electrode 23; the output end of the radio frequency power supply 19 is connected to the input end of the matcher 21; the extraction electrode 22 is connected to the extraction power supply high-voltage transmission line 26 and the shell of the radio frequency power supply 19 by a metal wire; the suppression electrode 23 is connected to the suppression power supply high-voltage transmission line 26 by a metal wire; the radio frequency power supply 19, the ion source stainless steel cover 20, the matcher 21, the extraction electrode 22 and the suppression electrode 23 are supported by an accelerating tube 6 and an insulating panel; the sealed container 8 is filled with sulfur hexafluoride insulating gas of not less than 0.65Mpa; the silicon stack anode terminal 1 is connected to an external high-frequency high-voltage power supply, and is rectified by a rectifier silicon stack by 2 times the voltage, and a maximum high-voltage direct current of 2.5MV is output at the silicon stack cathode terminal 3; the input end of the rectifier silicon stack 2 is the silicon stack anode terminal 3, and the silicon stack anode terminal 3 is connected to the high-voltage transmission line that feeds into the sealed container, and a high-frequency high-voltage input of up to 200kV (120kHz) is introduced.

[0035] The motor 18 is connected to the generator 16 through the insulating shaft 17, and the power output by the generator 16 is transmitted to the generator 16 through mechanical transmission; the insulating shaft 17 provides 2.5MV insulation between the generator 16 and the equipment connected to the rear end and the ground; the 2.5MV high-voltage direct current output from the cathode terminal 3 of the silicon stack provides a working potential for the generator 16 through the cathode lead column 4 of the silicon stack, at which time the ground potential of the voltage regulator 12 and the lead-out DC power supply 13, the suppressor DC power supply 15, and the isolation transformer 14 connected to the output end of the generator 16 is the MV-level high-voltage potential output by the rectifier silicon stack 2; the output end of the voltage regulator 12 is connected to the emitter through the isolation transformer 14 The RF power supply 19 and the matcher 21 provide power supply; the shell of the RF power supply 19 is connected to the extraction electrode 22 through a metal wire; the output end of the matcher 21 is connected to the metal wire surrounding the outer wall of the hollow cylindrical glass tube in the middle, and the gas entering the glass tube can be ionized through high-frequency output; the extraction electrode DC power supply 13 is connected to the extraction electrode 22 through a metal wire, and provides an extraction potential for the extraction electrode 22; the suppression electrode DC power supply 15 is connected to the suppression electrode 23 through a metal wire, and provides a suppression potential for the suppression electrode 23; the charged particles enter the acceleration tube 6 through the extraction potential and the suppression potential, and are accelerated by the 2.5MV electric field, and finally bombard the target material 7.

[0036] More specifically, by Figure 1-Figure 3It can be seen that the sealed container 8 of the embodiment of the present invention is a square-shaped structure, and the entire sealed container 8 can be divided into three cavities. The first cavity is a horizontal structure, and a silicon rectifier stack high-voltage power supply is arranged inside. The silicon rectifier stack high-voltage power supply includes a silicon stack anode terminal 1, a rectifier silicon stack 2 and a silicon stack cathode terminal 3; the second cavity is a vertical structure, and a generator power supply device 9 is arranged inside. The generator power supply device 9 includes a generator 16, a generator stainless steel cover 11, a voltage stabilizer 12, an isolation transformer 14, an insulating shaft 17, an extraction pole DC power supply 13, a suppression pole DC power supply 15, and a motor 18; the third cavity is also a vertical structure, and an ion source device and an accelerating tube 6 are arranged inside.

[0037] The silicon rectifier stack high-voltage power supply described in this example adopts symmetrical voltage doubling technology and consists of two cascade voltage doubling circuits. The secondary side of the internal transformer is a double winding, so it can effectively reduce ripple and prevent excessive voltage drops. The silicon stack anode terminal 1 is connected to a high-frequency voltage of 120kHz / 200kV, and can output a maximum DC parameter of 2.5MV / 20mA at the silicon stack cathode terminal 3.

[0038] In this example, the 2.5 MV high voltage output by the rectifier silicon stack 2 is overlapped with the groove at one end of the outer surface of the generator stainless steel cover 11 through the silicon stack cathode lead column 4, so that the generator stainless steel cover 11 obtains the same potential as the output of the rectifier silicon stack 2. The other end of the outer surface of the generator stainless steel cover 11 is overlapped with the ion source stainless steel cover 20 through the aluminum high-voltage lead column 5 through the surface groove embedding, and the 2.5 MV high voltage potential is transmitted to the position of the ion source stainless steel cover 20.

[0039] In this example, the ion source device 10 adopts the inductively coupled plasma generation technology, which utilizes the gas entering the hollow glass tube to discharge at high frequency so as to ionize the gas and generate plasma.

[0040] Specifically, in this example, a radio frequency power source 19 with a rated output power of 300 W and a frequency of 13.56 MHz is used. The metal wire wound around the hollow glass tube via the matcher 21 outputs high-frequency power, which can enable the ion source device 10 to generate plasma and maintain stability.

[0041] The ion source device 10 is installed and fixed inside the ion source stainless steel cover 20. The bottom of the ion source stainless steel cover 20 is fixed to the flange at the top entrance of the accelerating tube 6 by bolts, so that a high voltage of 2.5MV is applied to the top entrance flange of the accelerating tube 6. The charged protons drawn out by the ion source device 10 enter the accelerating tube 6 and are accelerated by the DC high-voltage electrostatic field, bombarding the target material 7 installed at the bottom of the accelerating tube 6 vertically downward.

[0042] Depend on Figure 1-3It can be seen that the power supply of the ion source device 10 described in this example is provided by the generator power supply device 9. Since the working platform of the ion source device 10 is at a high voltage potential of 2.5MV, the RF power supply 19, the extraction stage DC power supply 13, and the suppression stage DC power supply 15 require industrial frequency 220V power supply.

[0043] Specifically, the generator power supply device 9 in this example uses an external 220V industrial frequency power supply, and its motor 18 is installed at the bottom of the second cavity in the middle of the sealed container 8. The motor 18 is installed and fixed vertically, and the rotating shaft is upright, and is coaxially fixed and linked with the rotating shaft of the generator 16 through a 2.5-meter-long insulating shaft 17. When the equipment is working, the motor 18 at the bottom moves, thereby driving the insulating shaft 17 to rotate, and then driving the generator 16 to operate and generate electricity. Since the voltage generated by the operation of the generator 16 is not stable enough, a voltage regulator 12 is connected to the output end of the generator 16, and then output to the lower-level equipment after voltage stabilization, thereby realizing the isolated power supply of the silicon rectifier stack high-voltage platform. The maximum power output of the generator 16 that can be stably operated is not less than 3kW.

[0044] The power frequency output of the voltage stabilizer 12 in this example can supply power to the extraction DC power supply 13 and the suppression DC power supply 15, and the output ends of the extraction DC power supply 13 and the suppression DC power supply 15 are respectively connected to the extraction power supply high voltage transmission line 26 and the suppression power supply high voltage transmission line 27. In addition, the output end of the voltage stabilizer 12 is connected to the isolation transformer 14 via a cable, and continues to provide power frequency 220V AC power supply to the lower-level equipment through the isolation transformer output neutral line 24 and the isolation transformer output live line 25.

[0045] In this example, the insulating shaft 17 is made of composite insulating material, which can withstand motor startup and a long-term operating speed of 1400r / min. Both ends need to be able to withstand a DC voltage of not less than 2.5MV in a sulfur hexafluoride gas environment of not less than 0.65Mpa without breakdown flashover.

[0046] It needs to be further explained that in this example, two insulating support panels with a thickness of not less than 2 cm are installed in the middle cavity of the sealed container 8. They are vertically installed and fixed. On the one hand, they play a supporting role for the stainless steel cover on the top of the generator power supply device and the internal equipment. On the other hand, the insulating shaft 17 can obtain a certain limiting alignment effect from the lateral support and fixing device arranged between the insulating support panels.

[0047] Depend on Figure 3 , Figure 4It can be known that in this example, the radio frequency power supply 19 of the ion source device 10 obtains the industrial frequency 220V power supply through the isolation transformer output neutral line 24 and the isolation transformer output live line 25. The extraction power supply high-voltage transmission line 26 is connected to the extraction electrode 22, and provides the extraction electrode 22 with the positive high voltage potential output by the extraction electrode DC power supply 13. The extraction electrode 22 is installed near the outlet of the hollow glass cylinder of the ion source device 10, and can extract the positively charged particles of the ionized plasma. The suppression power supply high-voltage transmission line 27 is connected to the suppression electrode 23, and provides the suppression electrode 23 with the negative high voltage potential output by the suppression electrode DC power supply 15. The suppression electrode 23 is installed at the lower part of the particle beam outlet of the extraction electrode 22, which can play a role in suppressing the reverse electron bombardment of the extraction electrode 22 generated by the secondary collision of the charged particles.

[0048] In this example, the accelerating tube 6 is installed inside the third cavity on the side of the sealed container 8. The bottom of the accelerating tube 6 is fixed to the cavity base of the sealed container 8 by flanges and bolts. The top is connected to the ion source stainless steel cover 20 by metal to obtain the 2.5MV high-voltage DC potential output by the silicon rectifier stack high-voltage power supply. Therefore, the accelerating tube 6 has a 2.5MV DC high-voltage electrostatic field from top to bottom. The positively charged particles generated by the ion source device 10 enter the top of the accelerating tube 6, are accelerated by the DC high-voltage electrostatic field, and bombard the target material 7 installed at the bottom of the accelerating tube 6. According to different experimental conditions such as the beam intensity extracted by the ion source device 10, the target material and the acceleration energy, different neutron yields can be obtained.

[0049] It should be further explained that in this example, a molecular pump and a front-stage mechanical pump are provided at the bottom of the accelerating tube 6, and vacuum pumping needs to be continuously performed during the experiment, and the vacuum degree at the bottom of the accelerating tube 6 is required to be lower than 5.0E-5 Pa. The top of the accelerating tube 6 is connected and fixed to the ion source device 10 through a flange, and the sealing is ensured to prevent the high-pressure sulfur hexafluoride gas in the sealed container 8 from leaking into the interior of the accelerating tube.

[0050] like Figure 4 As shown, in this example, a hollow aluminum cylinder with a thin wall in the middle is used as the high-voltage lead column 5. On the one hand, its function is to connect the generator power supply device 9 and the stainless steel cover of the ion source device 10, and provide a 2.5MV high-voltage working potential. On the other hand, its internal hollow design enables the lead-out power supply high-voltage transmission line 26, the suppression power supply high-voltage transmission line 27, the isolation transformer output neutral line 24 and the isolation transformer output live line 25 to pass through the inner center of the high-voltage lead column 5, which greatly increases the space utilization rate while reducing the spatial capacitance interference between the transmission cables, provides industrial frequency power supply for the cable-connected ion source device 10, and provides lead-out potential and suppression potential for the lead-out electrode 22 and the suppression electrode 23.

[0051] like Figure 5As shown, it is a schematic diagram of the working principle of the accelerator ion source power supply transmission system of the 2.5MV silicon rectifier stack high-voltage platform of the present invention, wherein the voltage stabilizer 12, the generator 16, the extraction electrode DC power supply 13, the suppression electrode DC power supply 15, and the grounding cable of the next-door transformer 14 are connected to the output end of the rectifier silicon stack, and work on the 2.5MV DC high-voltage potential platform. The RF power supply 19 and the matcher 21 are powered by the isolation transformer 14. The movement path of the charged particles passes through the extraction electrode 22 and the suppression electrode 23 downward in sequence, and enters the top entrance of the acceleration tube with the same potential as the output end of the rectifier silicon stack 2, and is accelerated downward by the electrostatic field to bombard the target material 7. The acceleration tube 6 is welded and installed in series by multiple ceramic rings, and multiple voltage-dividing resistors are evenly connected in series on the outer electrode sheets of each ceramic ring of the acceleration tube. The top of the voltage-equalizing resistor is connected to the output end of the rectifier silicon stack through the top entrance flange of the acceleration tube, and the bottom of the voltage-equalizing resistor is connected to the metal base of the inner cavity of the sealed container 8.

Claims

1. An accelerator ion source power supply transmission system for a 2.5MV silicon rectifier stack high voltage platform, characterized in that: Including silicon rectifier stack high voltage power supply, high voltage lead transmission device, generator power supply device, ion source device, acceleration tube, target material; The silicon rectifier stack high voltage power supply comprises a rectifier silicon stack, a silicon stack anode terminal, and a silicon stack cathode terminal; The high-voltage lead transmission device includes a silicon stack cathode lead column and a high-voltage lead column; The generator power supply device comprises a generator, a stainless steel cover of the generator, a voltage stabilizer, an isolation transformer, an insulating shaft, an extraction pole DC power supply, a suppression pole DC power supply, and a motor; The ion source device comprises an ion source stainless steel cover, a radio frequency power supply, a matcher, and an extraction electrode.

2. The accelerator ion source power supply transmission system of the 2.5MV silicon rectifier stack high voltage platform as claimed in claim 1, characterized in that: The silicon rectifier stack high-voltage power supply, high-voltage lead transmission device, generator power supply device, ion source device, acceleration tube and target material are installed inside a sealed container, and the sealed container is filled with sulfur hexafluoride insulating gas of not less than 0.65Mpa.

3. The accelerator ion source power supply transmission system of the 2.5MV silicon rectifier stack high voltage platform as claimed in claim 1, characterized in that: The silicon rectifier stack high-voltage power supply is a horizontal structure. The rectifier silicon stack adopts a cascade voltage-doubling rectifier circuit to double the 120kHz / 200kV high-frequency AC input to the anode terminal of the silicon stack and output it from the cathode terminal of the silicon stack as 2.5MV DC through voltage-doubling rectification.

4. The accelerator ion source power supply transmission system of the 2.5MV silicon rectifier stack high voltage platform as claimed in claim 1, characterized in that: The high voltage lead column is an aluminum rod-shaped hollow cylinder.

5. The accelerator ion source power supply transmission system of the 2.5MV silicon rectifier stack high voltage platform as claimed in claim 1, characterized in that: The generator power supply device is a vertical installation structure, and the generator power supply device is located in the middle of the silicon rectifier stack high voltage power supply and the ion source device.

6. The accelerator ion source power supply transmission system of the 2.5MV silicon rectifier stack high voltage platform as claimed in claim 1, characterized in that: The ion source device adopts inductively coupled plasma generation technology and introduces charged particles into an accelerating tube for acceleration.

7. The accelerator ion source power supply transmission system of the 2.5MV silicon rectifier stack high voltage platform as claimed in claim 1, characterized in that: The generator, voltage stabilizer, isolation transformer, lead-out DC power supply, and suppression DC power supply are installed inside the stainless steel cover of the generator through a supporting structure.

8. The accelerator ion source power supply transmission system of the 2.5MV silicon rectifier stack high voltage platform as claimed in claim 1, characterized in that: The radio frequency power supply and the matcher are installed inside the stainless steel cover of the ion source through a supporting structure.

9. The accelerator ion source power supply transmission system of the 2.5MV silicon rectifier stack high voltage platform as claimed in claim 1, characterized in that: The two ends of the silicon stack cathode lead column are respectively connected to the silicon stack cathode terminal and the outside of the generator stainless steel cover, so that the generator stainless steel cover is at the 2.5MV DC high voltage potential output by the silicon rectifier stack.

10. The accelerator ion source power supply transmission system of the 2.5MV silicon rectifier stack high voltage platform as claimed in claim 1, characterized in that: The two ends of the high-voltage lead column are respectively overlapped and installed on the outside of the generator stainless steel cover and the ion source stainless steel cover, so that the ion source stainless steel cover is at the 2.5MV DC high voltage potential output by the silicon rectifier stack.

11. The accelerator ion source power supply transmission system of the 2.5MV silicon rectifier stack high voltage platform as claimed in claim 5, characterized in that: The generator power supply system is provided with an electric motor at the bottom and a generator at the top. The rotating shafts of the electric motor and the generator are connected by insulating rotating shafts to achieve rotational cooperation.

12. The accelerator ion source power supply transmission system of the 2.5MV silicon rectifier stack high voltage platform as claimed in claim 6, characterized in that: The ion source device and the ion source and the accelerating tube adopt a vertical installation structure.

13. The accelerator ion source power supply transmission system of the 2.5MV silicon rectifier stack high voltage platform as claimed in claim 11, characterized in that: The insulating shaft needs to withstand a maximum DC withstand voltage of 2.5 MV at both ends during operation.

14. The accelerator ion source power supply transmission system of the 2.5MV silicon rectifier stack high voltage platform as claimed in claim 11, characterized in that: The power output of the generator during operation is not less than 3kW.

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