A measuring device for an ultrahigh vacuum cyclotron

Abstract

This invention discloses a measuring device for an ultra-high vacuum cyclotron particle accelerator, comprising a rotating introducer. A flange assembly is mounted at the output end of the rotating introducer, and a conduit is installed inside the flange assembly. A coupling assembly is disposed inside the conduit, and the coupling assembly is rotatable within the conduit. A measuring shaft is mounted at one end of the coupling assembly, and the other end of the coupling assembly is connected to the output crankshaft of the rotating introducer. A docking flange is provided at one end of the conduit. The measuring shaft is equipped with a measuring probe for acquiring and transmitting signals, and an electrical signal transmission component. When the measuring shaft reciprocates, the probe can detect electric fields, magnetic fields, beam equivalents, etc., at different angles and locations within the vacuum chamber, greatly enhancing the flexibility of the device, reducing limitations in the detection position, increasing the detection range, and improving the device's effectiveness.

Description

Technical Field

[0001] This invention relates to the field of measuring instrument technology, specifically to a measuring instrument for an ultra-high vacuum cyclotron particle accelerator. Background Technology

[0002] Electron irradiation accelerators are widely used in industrial irradiation processing, such as irradiation sterilization in the food industry, irradiation aging in manufacturing, and irradiation pharmaceutical manufacturing in the medical industry. Ultra-high vacuum cyclotron particle accelerators (hereinafter referred to as accelerators) inject charged particles (electrons or ions) into an ultra-high vacuum cavity at a certain speed. Utilizing the combined action of strong magnetic and electric fields, the charged particles undergo cyclotron acceleration within the vacuum cavity, acquiring sufficiently high energy. These high-energy particles then bombard the materials or products to be processed, thereby irradiating them. Oscillating and rotating measuring instruments are used to detect the equivalent of electric field, magnetic field, and beam current at specific locations within the vacuum cavity during accelerator operation. This ensures that these equivalents meet the required parameters, allowing for real-time adjustment of the electric field strength, magnetic field strength, and particle beam flow rate. This enables charged particles to bombard the materials or products to be processed more efficiently and precisely with the required energy and quantity.

[0003] However, the measurement of electric field, magnetic field, beam equivalent, etc. within a vacuum cavity is very limited. There are also measuring instruments that use O-ring sealed transmission, but they have high rotational resistance and cannot withstand the high temperature on the measuring rod. Therefore, they do not meet the current requirements. In response, we propose a measuring instrument for an ultra-high vacuum cyclotron particle accelerator. Summary of the Invention

[0004] The purpose of this invention is to provide a measuring device for an ultra-high vacuum cyclotron particle accelerator, in order to solve the problems mentioned in the background art, such as the low flexibility and limited detection position of the measuring and sensing device extending into the ultra-high vacuum cavity of the accelerator and being fixedly installed in the vacuum cavity to detect the electric field, magnetic field, beam equivalent, etc. in the vacuum cavity, as well as the problems of the O-ring sealed transmission, which has high rotational resistance, is inflexible, and cannot withstand the high temperature on the measuring rod.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a measuring device for an ultra-high vacuum cyclotron particle accelerator, comprising a rotating inductor, wherein a flange assembly is installed at the output end of the rotating inductor; a conduit is installed inside the vacuum assembly, and the conduit, the vacuum flange, the rotating inductor vacuum flange, and the rotating inductor output support are all fixedly connected; a coupling assembly is provided inside the conduit, the coupling assembly has a gap with the conduit and can rotate inside the conduit; the coupling assembly is fixedly connected to the inductor output crankshaft; a docking flange is provided at one end of the conduit; the measuring shaft is equipped with a measuring probe for acquiring and transmitting signals and an electrical signal transmission assembly.

[0006] Preferably, the flange assembly includes a rotary inlet vacuum flange mounted on one side of the rotary inlet output support, and a vacuum flange mounted on one side of the rotary inlet vacuum flange; the conduit is placed inside the vacuum flange; and a copper sealing ring is provided between the vacuum flange and the rotary inlet vacuum flange.

[0007] Preferably, the rotary inlet is a flexible bellows rotary inlet; a support connecting plate is installed on the other side of the rotary inlet housing, a coupling is installed on the side of the support connecting plate away from the measuring shaft, a motor support plate is installed on the side of the coupling away from the measuring shaft, and a servo motor is installed on the side of the motor support plate away from the measuring shaft. The servo motor is fixedly connected to both the coupling and the motor support plate; a support rod is provided between the rotary inlet housing and the motor support plate.

[0008] Preferably, the output end of the servo motor is equipped with a shielding support frame, the upper end of the shielding support frame is equipped with a photoelectric switch shielding plate, a photoelectric switch is installed above the photoelectric switch shielding plate, and the photoelectric switch is fixedly connected to the motor support plate.

[0009] Preferably, the electrical signal transmission component includes an electrical outlet pipe installed at the upper end of the conduit, an insulating conduit installed inside the electrical outlet pipe, a sliding electrical connection contact rod installed inside the insulating conduit, the sliding electrical connection contact rod being able to reciprocate up and down within the insulating conduit, a spring installed at the upper end of the sliding electrical connection contact rod, a vacuum flange installed at the upper end of the electrical outlet pipe, a first vacuum coaxial RF connector installed inside the vacuum flange, a first wire installed at the lower end of the first vacuum coaxial RF connector, and the first wire being electrically connected to both the first vacuum coaxial RF connector and the sliding electrical connection contact rod.

[0010] Preferably, the coupling assembly includes a connecting shaft end connected to the output crankshaft of the inlet, a measuring shaft end connected to the measuring shaft, and an intermediate ceramic section for connecting the measuring shaft end and the connecting shaft end.

[0011] Preferably, the electrical signal transmission component includes a second vacuum coaxial RF connector mounted on the upper part of the docking flange. The vacuum coaxial RF connector is fixedly connected to the docking flange. A second wire is provided between the second vacuum coaxial RF connector and the measuring shaft. One end of the second wire is electrically connected to the second vacuum coaxial RF connector, and the other end passes through the inside of the measuring shaft and is electrically connected to two second measuring probes mounted on the measuring shaft.

[0012] Preferably, a connecting rod positioning ring is installed at one end of the coupling assembly.

[0013] Preferably, the coupling assembly is a No. 1 coupling, which is located inside the guide tube. One end of the No. 1 coupling is connected to the output crankshaft of the inlet, and the other end is connected to the measuring shaft.

[0014] Preferably, a wire outlet hole 41 is provided on the measuring shaft near the second measuring probe, and a wire inlet hole 41 is provided on the measuring shaft near the second wire.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. In Embodiment 1 of the present invention, the installation of an insulating conduit can isolate the power supply and prevent leakage of the device. The installation of a sliding electrical connection contact rod and a spring can press down the sliding electrical connection contact rod to ensure that the sliding electrical connection contact rod is always in close contact with the measuring shaft, thereby enhancing the performance of the device. The servo motor, in conjunction with the sliding electrical connection contact rod, enables the first measuring probe to perform continuous 360-degree rotation measurement within the ultra-high vacuum cavity of the accelerator, detecting the electric field, magnetic field, beam current equivalent, etc. at different angles within the vacuum cavity. This provides high flexibility, good performance, and stability and reliability.

[0017] 2. In Embodiment 2 of the present invention, by installing a second measuring probe on both the rear end face of one side of the measuring shaft and the front end face of the other side, the measuring shaft can be rotated 360 degrees back and forth for measurement. The second measuring probe can detect the electric field, magnetic field, beam current equivalent, etc. at different angles and locations in the vacuum cavity. It has good performance, is stable and reliable, and has a simpler structure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the ultra-high vacuum cyclotron particle accelerator of the present invention;

[0019] Figure 2 This is a top view of Embodiment 1 of an ultra-high vacuum cyclotron particle accelerator according to the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the ultra-high vacuum cyclotron particle accelerator of the present invention;

[0021] Figure 4 This is a top view of Embodiment 2 of the ultra-high vacuum cyclotron particle accelerator of the present invention.

[0022] Figure 5 This is an enlarged view of part I of an ultra-high vacuum cyclotron particle accelerator according to the present invention.

[0023] Figure 6 This is an enlarged view of part A of an ultra-high vacuum cyclotron particle accelerator according to the present invention.

[0024] In the diagram: 1. Rotary inlet housing; 2. Measuring shaft; 3. Docking flange; 4. First vacuum coaxial RF connector; 5. Coupling assembly; 6. Copper sealing ring; 7. First wire; 8. Coupling; 9. Motor support plate; 10. Servo motor; 11. Second wire; 12. Connecting rod positioning ring; 13. Conduit; 14. Vacuum flange No. 1; 15. Rotary inlet vacuum flange; 16. Rotary inlet output support; 17. First bearing; 18. Flexible bellows; 19. Inlet output crankshaft; 20. Second bearing; 21. Rotary inlet isolation transmission component; 22. Rotary inlet crankshaft; 23. Support connecting plate; 24. Photoelectric switch shield; 25. Shield support frame; 26. Support rod; 27. Vacuum flange No. 2; 28. Spring; 29. ​​Electrical outlet pipe; 30. Insulating conduit; 31. Sliding electrical connection contact rod; 32. O-ring seal; 33. First measuring probe; 34. Second measuring probe; 35. Second vacuum coaxial RF connector; 36. Photoelectric switch; 37. Connecting shaft end; 38. Measuring shaft extension end; 39. Ceramic section; 40. Coupling No. 1; 41. Outlet hole; 42. Inlet hole. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0026] Example 1 (Rotational Measuring Instrument)

[0027] Please see Figure 1 and Figure 2An embodiment of the present invention provides a measuring device for an ultra-high vacuum cyclotron particle accelerator, comprising a flexible bellows rotary inductor. The rotary inductor includes a rotary inductor housing 1, an inductor output crankshaft 19 is installed inside the rotary inductor housing 1, and a rotary inductor output support 16 is provided on the outside of one side of the inductor output crankshaft 19. First bearings 17 are installed between one end opening of the rotary inductor output support 16 and the inductor output crankshaft 19, and between the other end opening of the rotary inductor output support 16 and the rotary inductor input crankshaft 22. Second bearings 20 are installed between the rotary inductor isolation transmission component 21 and the inductor output crankshaft 19, and between the rotary inductor isolation transmission component 21 and the rotary inductor input crankshaft 22. A flange assembly is installed on one side of component 16. The flange assembly includes a rotary inlet vacuum flange 15 and a first vacuum flange 14 installed on one side of the rotary inlet vacuum flange 15. A conduit 13 is installed inside the first vacuum flange 14. The conduit 13, the first vacuum flange 14, the rotary inlet vacuum flange 15, and the rotary inlet output support component 16 are all fixedly connected. A coupling assembly 5 is provided inside the conduit 13. The coupling assembly 5 has a gap with the conduit 13 and can rotate inside the conduit. The coupling assembly 5 is fixedly connected to the inlet output crankshaft 19. A measuring shaft 2 is installed at one end of the coupling assembly 5. The measuring shaft 2 is connected to the coupling assembly 5. A docking flange 3 is provided at one end of the conduit 13. The rotary inlet housing 1 is fixedly connected to the rotary inlet output support component 16.

[0028] Furthermore, a support connecting plate 23 is installed on the other side of the rotary introducer housing 1, and the support connecting plate 23 is fixedly connected to the rotary introducer housing 1. A rotary introducer input crankshaft 22 is installed on the other side of the introducer output crankshaft 19, and the rotary introducer input crankshaft 22 is fixedly connected to the introducer output crankshaft 19. A coupling 8 is installed on the side of the support connecting plate 23 away from the measuring shaft 2. A motor support plate 9 is installed on the side of the coupling 8 away from the measuring shaft 2. A servo motor 10 is installed on the side of the motor support plate 9 away from the measuring shaft 2. The servo motor 10 is fixedly connected to both the coupling 8 and the motor support plate 9. A vacuum flange 14 and a rotary introducer vacuum flange 15 are provided. There is a copper sealing ring 6, a vacuum flange (14) and (15), with a copper sealing ring placed between them for vacuum sealing connection between the rotary introducer and the conduit (5); a shielding plate support frame 25 is installed at the output end of the servo motor 10, a photoelectric switch shielding plate 24 is installed at the upper end of the shielding plate support frame 25, a photoelectric switch 36 is installed above the photoelectric switch shielding plate 24, and the photoelectric switch 36 is fixedly connected to the motor support plate 9; the photoelectric switch is used to set the zero angle of the motor shaft, so that the angle of the motor rotation can be set or controlled according to the actual working conditions or requirements, thereby controlling the angle position of the measuring shaft and the measuring probe on it by controlling the direction and angle of the motor rotation and the number of rotations.

[0029] Furthermore, a flexible bellows 18 is installed on the other side of the rotary inlet output support 16. The flexible bellows 18 is fixedly connected to the rotary inlet output support 16. A rotary inlet isolation transmission component 21 is installed on the side of the flexible bellows 18 away from the measuring shaft 2. The rotary inlet isolation transmission component 21 is fixedly connected to the flexible bellows 18. A support rod 26 is provided between the rotary inlet housing 1 and the motor support plate 9.

[0030] Furthermore, the electrical signal transmission component includes an electrical outlet pipe 29 installed at the upper end of the conduit 13. The electrical outlet pipe 29 is fixedly connected to the conduit 13. An insulating conduit 30 is installed inside the electrical outlet pipe 29. The insulating conduit 30 can isolate the power supply and prevent leakage of the device. A sliding electrical connection contact rod 31 is installed inside the insulating conduit 30, so that the first measuring probe 33 at one end of the measuring shaft 2 remains energized when the measuring shaft 2 rotates, enhancing the practicality of the device. The sliding electrical connection contact rod 31 can reciprocate up and down inside the insulating conduit 30. A spring 28 is installed at the upper end of the sliding electrical connection contact rod 31. The spring 28 can press down the sliding electrical connection. The contact rod 31 ensures that the sliding electrical connection contact rod 31 is always in close contact with the measuring shaft 2, enhancing the effectiveness of the device. A second vacuum flange 27 is installed at the upper end of the electrical outlet pipe 29, and the second vacuum flange 27 is fixedly connected to the electrical outlet pipe 29. A first vacuum coaxial RF connector 4 is installed inside the second vacuum flange 27. A first wire 7 is installed at the lower end of the first vacuum coaxial RF connector 4, and the first wire 7 is electrically connected to both the first vacuum coaxial RF connector 4 and the sliding electrical connection contact rod 31. A first measuring probe 33 is installed at one end of the measuring shaft 2, and the first measuring probe 33 is fixedly connected to the measuring shaft 2. An O-ring seal 32 is provided inside the mating flange 3. The servo motor 10 drives the first measuring probe 33 to rotate, enabling the first measuring probe 33 to perform continuous 360-degree rotation measurement within the ultra-high vacuum chamber of the accelerator. It can detect data such as electric field, magnetic field, and beam equivalent at different angles within the vacuum chamber in real time, and transmit the data signal to the first vacuum coaxial RF connector 4 through the measuring shaft 2. This provides high flexibility, reduces the limitation of the detection position, and enhances the effectiveness of the device.

[0031] The coupling assembly includes a connecting shaft end 37 connected to the output crankshaft of the inlet, a measuring shaft extension end 38 connected to the measuring shaft, and an intermediate ceramic section 39 connecting the measuring shaft extension end 38 and the connecting shaft end 37. The measuring shaft end is used for both shaft transmission and electrical conduction, while the connecting shaft end is only used for shaft transmission. Furthermore, the measuring shaft end experiences high temperatures (approximately 400 degrees Celsius). Therefore, the first coupling assembly uses the intermediate ceramic section to fix the two metal parts together into a single unit, thus balancing the coupling's strength, high-temperature resistance, and insulation between the two metal parts. Both the coupling and the connecting shaft end 37 have a recessed mounting groove at the end where the ceramic section 39 is installed to facilitate its installation. The ceramic section 39 can be installed using a pin connection or threaded connection. (The intermediate ceramic section securely connects the two metal ends into a single coupling (which can be achieved through bonding, welding, pin connection, ceramic screw bolting, etc.), balancing strength, high-temperature resistance, and insulation between the two metal parts. This coupling assembly can be called an "insulated coupling.") Example 2 (Oscillating Measuring Instrument)

[0032] Please see Figure 3 and Figure 4 The present invention provides an embodiment: based on embodiment 1, the electrical signal transmission component includes a second vacuum coaxial RF connector 35 mounted on the upper part of the docking flange 3, the vacuum coaxial RF connector being fixedly connected to the docking flange 3, and a second wire 11 being provided between the second vacuum coaxial RF connector 35 and the measuring shaft 2; the measuring shaft is a hollow structure; one end of the second wire 11 is electrically connected to the second vacuum coaxial RF connector 35, and the other end passes through the interior of the measuring shaft 2 and is electrically connected to two second measuring probes 34 mounted on the measuring shaft 2.

[0033] A wire outlet hole 41 is provided on the measuring shaft closer to the second measuring probe, and a wire inlet hole 41 is provided on the measuring shaft closer to the second wire; the setting of the wire outlet hole 41 and the wire inlet hole 42 facilitates the installation and wiring of the second wire.

[0034] Furthermore, a second measuring probe 34 is installed on both the rear end face of one side and the front end face of the other side of the measuring shaft 2. The second measuring probe 34 is fixedly connected to the measuring shaft 2, and a connecting rod positioning ring 12 is installed at one end of the coupling assembly 5. With the second measuring probe 34 installed on both the rear end face of one side and the front end face of the other side of the measuring shaft 2, the second measuring probe 34 can detect the electric field, magnetic field, beam current equivalent, etc., at different angles and locations within the vacuum chamber when the measuring shaft 2 rotates. This greatly enhances the flexibility of the device, reduces the limitations of the device's detection position, increases the detection range, and enhances the device's effectiveness.

[0035] The coupling assembly is a No. 1 coupling 40, which is located inside the guide tube. One end of the No. 1 coupling 40 is connected to the output crankshaft of the inlet, and the other end is connected to the measuring shaft.

[0036] The working principle of this invention will be explained below:

[0037] Example 1: In use, the measuring shaft 2 and measuring probe of this device are inserted into the ultra-high vacuum chamber of the accelerator and fixed to the vacuum chamber of the accelerator through the docking flange 3. Then, the servo motor 10 drives the input shaft of the rotary introducer to rotate through the coupling 8, thereby driving the rotary introducer isolation transmission component 21 to make a circular motion. The introducer drives the output crankshaft 19 to rotate, thereby causing the coupling assembly 5 to drive the measuring shaft 2 to rotate. In Example 1, when the measuring shaft 2 rotates, the sliding electrical connection contact rod 31 is always in contact with the measuring shaft 2 under the action of the spring 28, transmitting the measured current and voltage signals to the measuring shaft 2. The measuring shaft is a solid shaft to facilitate conductivity. The measuring shaft 2 then transmits the signal to the sliding electrical connection contact rod 31, and the sliding electrical connection contact rod 31 then transmits the signal to the first vacuum coaxial RF connector 4 through the wire. The installation of the insulating conduit 30 in this device can isolate the power supply, prevent leakage, avoid electric shock to personnel, and enhance the safety of the device. The installation of the sliding electrical connection contact rod 31 can provide contact conductivity, ensuring that the first measuring probe 33 at one end of the measuring shaft 2 remains electrically conductive while the measuring shaft 2 rotates, enhancing the practicality of the device. The installation of the spring 28 can press down the sliding electrical connection contact rod 31, ensuring that the sliding electrical connection contact rod 31 is always in close contact with the measuring shaft 2, enhancing the performance of the device. The servo motor 10, in conjunction with the sliding electrical connection contact rod 31, can keep the first measuring probe 33 working continuously while rotating, allowing the first measuring probe 33 to rotate continuously 360 degrees within the ultra-high vacuum cavity of the accelerator, detecting electric fields, magnetic fields, beam equivalents, etc. at different angles within the vacuum cavity. This provides high flexibility and less limitation on the detection position, further enhancing the performance of the device.

[0038] Example 2: The servo motor 10 drives the measuring shaft 2 to rotate reciprocally, allowing the second measuring probe 34 on the rear end face of one side and the front end face of the other side of the measuring shaft 2 to detect the electric field, magnetic field, and beam current equivalent at different angles and locations within the vacuum cavity. Because the measuring shaft 2 rotates reciprocally, the second wire 11 will not become entangled in the measuring shaft 2. Installing the second measuring probe 34 on both the rear end face of one side and the front end face of the other side of the measuring shaft 2 allows the second measuring probe 34 to detect the electric field, magnetic field, and beam current equivalent at different angles and locations within the vacuum cavity during the reciprocating rotation of the measuring shaft 2. This greatly enhances the flexibility of the device, reduces limitations in the detection position, increases the detection range, and improves the overall effectiveness of the device.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A gauge for an ultrahigh vacuum cyclotron comprising a rotating introducer, characterized in that, The output end of the rotary introducer is provided with a flange assembly, the inside of the flange assembly is provided with a conduit (13); the inside of the conduit (13) is provided with a shaft coupling assembly (5), the shaft coupling assembly (5) can rotate in the conduit (13); one end of the shaft coupling assembly (5) is provided with a measuring rotating shaft (2), the other end of the shaft coupling assembly (5) is connected with the introducer output crankshaft (19) of the rotary introducer; one end of the conduit (13) is provided with a butt flange (3); the measuring rotating shaft is provided with a measuring probe and a telecommunication signal transmission assembly for collecting and transmitting signals; the rotary introducer is a flexible bellows rotary introducer; the other side of the rotary introducer shell frame (1) is provided with a support connecting plate (23), the side of the support connecting plate (23) away from the measuring rotating shaft (2) is provided with a shaft coupling (8), the side of the shaft coupling (8) away from the measuring rotating shaft (2) is provided with a motor support plate (9), the side of the motor support plate (9) away from the measuring rotating shaft (2) is provided with a servo motor (10), and the rotary introducer shell frame (1) and the motor support plate (9) are provided with a support rod (26).

2. A gauge for an ultrahigh vacuum cyclotron according to claim 1, characterized in that: The flange assembly comprises a rotary introducer vacuum flange (15) installed on one side of a rotary introducer output support (16) and a first vacuum flange (14) installed on one side of the rotary introducer vacuum flange (15); the conduit (13) is arranged in the first vacuum flange (14); and a copper sealing ring (6) is arranged between the first vacuum flange (14) and the rotary introducer vacuum flange (15).

3. The gauge of claim 1, wherein: The output end of the servo motor (10) is provided with a shielding plate support frame (25), the upper end of the shielding plate support frame (25) is provided with a photoelectric switch shielding plate (24), and the upper side of the photoelectric switch shielding plate (24) is provided with a photoelectric switch (36).

4. The gauge of claim 1, wherein: The telecommunication signal transmission assembly comprises an electrical outlet pipe (29) installed on the upper end of the conduit (13), an insulating conduit (30) installed in the electrical outlet pipe (29), a sliding electrical connection contact rod (31) installed in the insulating conduit (30), a spring (28) installed on the upper end of the sliding electrical connection contact rod (31), the sliding electrical connection contact rod (31) can reciprocate up and down in the insulating conduit (30), a second vacuum flange (27) installed on the upper end of the electrical outlet pipe (29), a first vacuum coaxial radio frequency connector (4) installed in the second vacuum flange (27), and a first lead wire (7) installed on the lower end of the first vacuum coaxial radio frequency connector (4), the first lead wire (7) is electrically connected with the first vacuum coaxial radio frequency connector (4) and the sliding electrical connection contact rod (31).

5. A gauge for an ultrahigh vacuum cyclotron as defined in claim 4, characterized in that: The shaft coupling assembly comprises a connecting rotating shaft end (37) connected with the introducer output crankshaft, a measuring rotating shaft extension end (38) connected with the measuring rotating shaft, and an intermediate ceramic section (39) for connecting the measuring rotating shaft extension end (38) and the connecting rotating shaft end (37).

6. The gauge of claim 1, wherein: The electric signal transmission assembly comprises a second vacuum coaxial radio frequency connector (35) installed on the upper part of the butt flange (3), and a second lead wire (11) is arranged between the second vacuum coaxial radio frequency connector (35) and the measurement rotating shaft (2); one end of the second lead wire (11) is electrically connected with the second vacuum coaxial radio frequency connector (35), and the other end penetrates through the inside of the measurement rotating shaft (2) and is electrically connected with two second measurement probes (34) installed on the measurement rotating shaft (2).

7. A gauge for an ultrahigh vacuum cyclotron as defined in claim 6, characterized in that: One end of the shaft coupling assembly (5) is provided with a connecting rod positioning ring (12).

8. The gauge of claim 6, wherein: The shaft coupling assembly is a first shaft coupling (40), the first shaft coupling (40) is located in the guide pipe, one end of the first shaft coupling (40) is connected with the guide-in device output crankshaft, and the other end is connected with the measurement rotating shaft.

9. The gauge of claim 6, wherein: Wire holes (41) are arranged on the measurement rotating shaft (2) close to the second measurement probes (34), and wire holes (41) are arranged on the measurement rotating shaft close to the second lead wire (11).

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