Calibration device for beam position detector

Abstract

The invention belongs to the technical field of high-current ion accelerators, and relates to a calibration device for a beam position detector, which comprises a horizontal supporting platform, a two-dimensional moving platform, a signal wire fixing unit, a signal wire adjusting unit and a detector supporting part, the two-dimensional moving platform is arranged on the horizontal supporting platform, the signal wire fixing unit is fixed on the two-dimensional moving platform and is used for fixing a signal wire, the detector supporting part is arranged on the horizontal supporting platform and is used for placing a beam position detector, and the signal wire penetrates through the beam position detector and is fixed on two opposite side surfaces of the signal wire fixing unit. The two side faces for fixing the signal wire are each provided with a signal wire adjusting unit used for tensioning the signal wire. According to the scheme, the device is high in repeated positioning precision, easy to adjust, convenient to disassemble and assemble, simple in structure and stable in performance, and can be used for calibrating beam position detectors with various polar plates with different diameters.

Description

Technical Field

[0001] The invention relates to a calibration device for a beam position detector, belonging to the technical field of high-current ion accelerators. Background Art

[0002] The beam position detector is a key device in the accelerator beam diagnostic system, mainly used to measure the lateral position information of the center of mass of the charged particle bunch. As the core device for turn-by-turn position measurement, closed-orbit measurement, system debugging, and daily operation monitoring during the operation of the accelerator, its performance directly affects the operation quality of the accelerator. In the accelerator device system, the beam position detector is usually installed in a distributed layout at each key node of the accelerator system.

[0003] In the detector design stage, although the theoretical sensitivity coefficient K can be obtained through electromagnetic field simulation X and K Y However, due to mechanical errors in the manufacturing process (including processing tolerances, welding deformations, and assembly deviations, etc.), the key performance parameters of the actual product are often different from the theoretical design values. In addition, when the beam position deviates greatly from the mechanical center of the detector, there will be an obvious nonlinear relationship between the position coordinates X, Y and the output signal. At this time, if the linear model is continued to be used for calculation, it will lead to a large position measurement error. Therefore, accurate calibration of the detector before it is put into use is a necessary step to ensure its measurement accuracy, and a dedicated calibration device is the key equipment to achieve this goal.

[0004] Through the investigation of existing calibration devices at home and abroad, it is found that most of the current equipment is mainly aimed at small-caliber beam position detectors (the plate diameter is usually in the centimeter range), and the calibration method mostly adopts the solution of the detector moving with the mobile platform. However, taking the HIAF (High Intensity Heavy-ion Accelerator Facility) project as an example, the maximum diameter of the plate of the beam position detector used is 330mm, and the weight of the whole set of equipment can reach 70kg. If the traditional calibration scheme is used, the following technical challenges will be faced: First, the large motion platform will produce obvious mechanical deformation when carrying heavy detectors, and it is difficult to ensure the calibration accuracy; secondly, in order to adapt to the large-size beam position detector, it is necessary to increase the platform structure. The large platform structure will not only increase the complexity of the system, but also bring many inconveniences to the installation and replacement of the beam position detector and the subsequent equipment maintenance. Summary of the invention

[0005] In view of the above problems, an object of the present invention is to provide a calibration device for a beam position detector, which can be used to calibrate beam position detectors with various plate diameters and has high positioning accuracy and repeatability.

[0006] To achieve the above-mentioned purpose, the present invention proposes the following technical scheme: a calibration device for a beam position detector, comprising: a horizontal support platform, a two-dimensional mobile platform, a signal wire fixing unit, a signal wire adjustment unit and a detector support part; the two-dimensional mobile platform is arranged on the horizontal support platform, the signal wire fixing unit is fixed on the two-dimensional mobile platform, and is used to fix the signal wire; the detector support part is arranged on the horizontal support platform, and is used to place the beam position detector; the signal wire passes through the beam position detector and passes through two opposite sides of the signal wire fixing unit, and is connected to the signal feedthrough in the signal wire adjustment unit; the signal wire adjustment unit is fixed on two sides of the signal wire fixing unit, and is used to tension the signal wire.

[0007] Furthermore, the horizontal support platform includes a height-adjustable support column and a support platform, and the height-adjustable support column is arranged below the support platform and is used to adjust the height of the support platform.

[0008] Furthermore, the two-dimensional moving platform includes a horizontal moving part, a vertical moving part and a connecting part; the horizontal moving part is fixed at one end of the support platform, the vertical moving part can move horizontally on the horizontal moving part, the connecting part is arranged on the vertical moving part and can move up and down relative to the vertical moving part, and the connecting part is used to connect the signal wire fixing unit.

[0009] Furthermore, the horizontal motion part includes a base plate, a guide groove, a guide rail, a slider, a horizontal support plate and a motor. The guide groove is arranged on the base plate, the guide rail is arranged on the guide groove, and the slider is arranged on the guide rail. The slider is driven to slide horizontally by a motor fixed to the base plate. A horizontal support plate is arranged on the slider to support the vertical motion part. Horizontal pressure plates are installed on both sides of the horizontal support plate to control the flatness of the slider.

[0010] Furthermore, the signal wire fixing unit includes a cross beam, a wire end fixing plate and a reinforcing rib plate. The wire end fixing plates are two in number and are arranged opposite to each other. A through hole is arranged at the center of each of the wire end fixing plates for the signal wire to pass through. There are two cross beams, which form a frame structure with the two wire end fixing plates. The reinforcing rib plate is fixed on each of the cross beams to increase the rigidity of the cross beam.

[0011] Further, the signal wire adjustment unit includes a signal wire perforating member, a signal wire tensioning member and a signal feedthrough. The signal wire perforating member includes a positioning plate, a small hole is arranged on the positioning plate, and its position corresponds to the position of the through hole of the wire end fixing plate; after the signal wire passes through the through hole, it passes through the small hole and the signal feedthrough, and the aperture of the small hole is smaller than that of the through hole, which is used to limit the position of the signal wire. The signal wire tensioning member is arranged on one side of the signal wire, and it is a retractable structure. When the signal wire tensioning member is extended, the signal wire is tensioned; the signal feedthrough is used to input or export the signal in the signal wire.

[0012] Further, the signal feedthrough in the signal wire adjustment unit is arranged in a direction perpendicular to the radial direction of the signal wire, and a signal wire guide for changing the direction of the signal wire is arranged between the signal feedthrough and the signal wire tensioning member.

[0013] Furthermore, the signal wire adjustment unit also includes a calibration reference piece, which is arranged on the top of the positioning plate and located directly above the small hole, and is used to calibrate the position of the signal wire.

[0014] Furthermore, the signal wire adjustment unit also includes a signal wire two-dimensional adjustment member, which is arranged between the positioning plate and the wire end fixing plate and can drive the positioning plate to move horizontally and vertically to adjust the horizontal and vertical position of the signal wire.

[0015] Furthermore, the detector support part includes a welding platform, a height adjustment unit and a support member, the height adjustment unit is arranged on the welding platform, the support member is arranged on the height adjustment unit, the support member is used to support the beam position detector, and the support member and the connecting part are precision-machined support groove structures.

[0016] The technical solution of the present invention has at least the following technical effects or advantages:

[0017] The device of the present invention solves the problem of reduced calibration accuracy caused by mechanical deformation during calibration of a large-caliber beam position detector; at the same time, the support components designed for beam position detectors of different specifications greatly improve the installation accuracy and replacement and disassembly efficiency of the beam position detector during calibration;

[0018] The device of the present invention solves the problem of slight deviation of the mechanical center axis position of different beam position detectors due to differences in processing, welding and assembly. With the assistance of mechanical alignment personnel, the position error of the calibration signal wire can be simply and quickly adjusted to within 0.05mm, greatly improving the accuracy of the calibration result.

[0019] The invention can be widely used for accurately calibrating beam position detectors in the field of beam diagnosis of high-current heavy ion (including proton beam) accelerators. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of a calibration device for a beam position detector in one embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of the structure of a two-dimensional mobile platform in one embodiment of the present invention;

[0022] Figure 3 is a schematic structural diagram of a horizontal motion part in one embodiment of the present invention;

[0023] Figure 4 is a schematic structural diagram of a signal wire fixing unit in one embodiment of the present invention;

[0024] Figure 5 is a schematic structural diagram of a signal wire adjustment unit in one embodiment of the present invention;

[0025] Figure 6 is a schematic structural diagram of a detector support portion in one embodiment of the present invention;

[0026] Figure 7 Schematic diagram of a 202 mm diameter large-aperture oblique beam position detector calibration device according to an embodiment of the present invention;

[0027] Figure 8 This is a diagram of the calibration results of a 202mm diameter large-aperture oblique beam position detector in one embodiment of the present invention;

[0028] Fig. 9 Schematic diagram of a beam position detector calibration device with parallel plates of 166 mm in diameter according to an embodiment of the present invention;

[0029] Fig.10 This is a diagram of the calibration results of a 166 mm diameter parallel plate beam position detector in one embodiment of the present invention. Description of the drawings:

[0031] 1-horizontal support platform; 2-two-dimensional moving platform; 21-horizontal motion part; 211-bottom plate; 212-guide rail; 213-horizontal support plate; 214-motor; 215-horizontal pressure plate; 22-vertical motion part; 23-connecting part; 24-slider; 3-signal wire fixing unit; 31-crossbeam; 32-wire end fixing plate; 321-through hole; 33-reinforcement rib plate; 4-signal wire adjustment unit; 41-signal wire perforating member; 42-signal wire guide member; 43-signal feedthrough; 44-signal wire tensioning member; 45-calibration reference member; 46-signal wire two-dimensional adjustment member; 47-signal wire; 5-detector support part; 51-welding platform; 52-height adjustment unit; 53-support member. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail through specific embodiments. However, it should be understood that the provision of specific embodiments is only for a better understanding of the present invention, and they should not be understood as limitations of the present invention. In the description of the present invention, it should be understood that the terms used are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0033] In order to solve the problems existing in the prior art, such as the whole set of beam position detectors is heavy, mechanical deformation increases, accuracy is difficult to meet requirements, beam position detectors are inconvenient to replace and disassemble, and maintenance is difficult and costly, the present invention proposes a calibration device for beam position detectors, including a horizontal support platform 1, a two-dimensional mobile platform 2, a signal wire fixing unit 3, a signal wire adjustment unit 4 and a detector support 5, the beam position detector is installed on the leveled detector support 5, and the detector support 5 is fixed on the horizontal support platform 1; the two-dimensional mobile platform 2 drives the signal wire 47 to move in two dimensions, and the signal wire adjustment unit 4 tensions and adjusts the signal wire 47. During the calibration process, the signal wire 47 and the center line of the beam position detector are adjusted to be collinear through the two-dimensional mobile platform 2, and this position is used as the origin of calibration to accurately calibrate the beam position detector. The device of the present invention has high repeatability positioning accuracy, simple adjustment, convenient disassembly and assembly, simple structure and stable performance, and can be used to calibrate beam position detectors with various different plate diameters. The scheme of the present invention is described in detail below through embodiments.

[0034] Example

[0035] This embodiment discloses a calibration device for a beam position detector, such as Figure 1 As shown, it includes: a horizontal support platform 1, a two-dimensional moving platform 2, a signal wire fixing unit 3, a signal wire adjustment unit 4 and a detector support part 5;

[0036] The two-dimensional mobile platform 2 is arranged on the horizontal support platform 1, the signal wire fixing unit 3 is fixed on the two-dimensional mobile platform 2, and is used to fix the signal wire 47. The detector support part 5 is arranged on the horizontal support platform 1, and is used to place the beam position detector. The cavity of the beam position detector is hollow, so the signal wire 47 can pass through the beam position detector and pass through the two opposite sides of the signal wire fixing unit 3, and be connected with the signal feedthrough in the signal wire adjustment unit 4. The signal wire adjustment unit 4 is fixed on the two sides of the signal wire fixing unit 3, and is used to tension the signal wire 47.

[0037] The horizontal support platform 1 includes a height-adjustable support column and a support table. In this embodiment, the support table is a stainless steel support platform. There are four height-adjustable support columns, which are respectively arranged at the four corners of the support table. The height-adjustable support columns are arranged below the support table to adjust the height of the support table and level the rigid support table as a whole. This embodiment abandons the commonly used vibration isolation optical platform. Due to the existence of elastic support, the vibration isolation platform will sink and deform by 2-3mm during the center of gravity shift of the heavy weight mechanism movement, which has a serious impact on the calibration results. Therefore, a horizontal rigid platform is used in this embodiment to minimize the sinking deformation caused by the center of gravity shift of the motion mechanism to ensure the accuracy of the calibration results.

[0038] The two-dimensional mobile platform 2 includes a horizontal motion part 21, a vertical motion part 22 and a connecting part 23; the horizontal motion part 21 is fixed to one end of the support platform, the vertical motion part 22 can move horizontally on the horizontal motion part 21, and a connecting part 23 is arranged on the vertical motion part 22, and the connecting part 23 can move up and down relative to the vertical motion part 22, and the connecting part 23 is used to connect the signal wire fixing unit 3. The positioning accuracy and repeated positioning accuracy of the two-dimensional mobile platform 2 are controlled within 0.1mm / 150mm.

[0039] like Figure 2 , Figure 3As shown, the horizontal motion part 21 includes a bottom plate 211, a guide groove, a guide rail 212, a slider 24, a horizontal support plate 213 and a motor 214. The bottom plate 211 is arranged at the bottom of the horizontal motion part 21 and connected to the horizontal support platform 1, and is used to control the vertical motion part 22 to move in the horizontal direction, that is, to move forward and backward in the length direction of the horizontal motion part 21. Two guide grooves parallel to the long side of the bottom plate 211 are arranged on the side of the bottom plate 211 away from the horizontal support platform 1, the guide rail 212 is arranged on the guide groove, and the slider 24 is arranged on the guide rail 212. The motor 214 is arranged on the bottom plate 211, connected to the slider 24 through a ball screw pair, and drives the slider 24 to slide horizontally. A ball screw support seat is arranged at each end of the wide side of the bottom plate 211, which is used to fix the ball screw pair. A horizontal support plate 213 is provided on the slider 24 for supporting the vertical moving part 22. Horizontal pressure plates 215 are installed on both sides of the horizontal support plate 213 to increase the rigidity of the overall structure and reduce the slight deformation caused by gravity, so that the overall flatness of the calibration device can be controlled.

[0040] In this embodiment, the parallelism error of the two guide grooves is within 0.05mm, and the straightness error is within 0.05mm. The guide rail 212 is close to the guide groove. After installation, the measurement arm test shows that the parallelism error and the branch line error of the two guide rails 212 are within 0.05mm. The material of the horizontal support plate 213 is a high-strength hard aluminum alloy plate with a thickness of 20mm.

[0041] like Figure 2 , Figure 3 As shown, the structure of the vertical motion part 22 is similar to that of the horizontal motion part 21. That is, the vertical motion part 22 is a box-shaped structure, and two vertical guide grooves parallel to the long sides of the box-shaped structure are arranged on one side thereof, and a vertical guide rail is arranged on the vertical guide groove, and a vertical slider is arranged on the vertical guide rail. The vertical slider is connected to the motor through a ball screw pair, and the motor and the ball screw pair are both fixed on the box body of the box-shaped structure. The motor drives the vertical slider to move vertically, that is, to move up and down relative to the box-shaped structure. In the vertical motion part 22, in order to reduce its assembly error, a rectangular aluminum profile with a larger bending section modulus in the vertical direction is selected to assemble the vertical motion part 22, and at the same time, the mounting surface at the bottom thereof is finely processed to ensure the verticality between the vertical motion part 22 and the horizontal motion part 21.

[0042] In this embodiment, the connection portion 23 is a precision-machined support groove structure, and its material is aluminum profile.

[0043] like Figure 4As shown, the signal wire fixing unit 3 includes a crossbeam 31, a wire end fixing plate 32 and a reinforcing rib plate 33. There are two wire end fixing plates 32, which are arranged opposite to each other. There are also two crossbeams 31, which are connected between the two wire end fixing plates 32. The crossbeam 31 and the wire end fixing plates 32 form a rectangular or square frame structure. The crossbeam 31 is made of aluminum profile material. The span of the two crossbeams 31 is 1000mm, and two upper and lower reinforcing rib plates 33 are fixed on each crossbeam 31. In actual use, the front end of the crossbeam 31 is pressed, and the position change before and after pressing is measured by a laser tracker. If the position change is within 0.02mm, the signal wire fixing unit 3 has a higher rigidity. A through hole 321 is set at the middle position of each wire end fixing plate 32 for the signal wire 47 to pass through. One end of the signal wire 47 passes through a through hole 321 and is connected to a signal feedthrough 43 , and the other end of the signal wire 47 passes through a through hole 321 on the wire end fixing plate 32 opposite to the through hole 321 and is connected to another signal feedthrough 43 .

[0044] like Figure 5 As shown, the signal wire adjustment unit 4 includes a signal wire perforating member 41, a signal wire guide member 42, a signal feedthrough 43, a signal wire tensioning member 44, a signal wire two-dimensional adjustment member 46 and a calibration reference member 45. After the signal wire 47 passes through the signal wire perforating member 41 and the signal wire guide member 42 in sequence, it is fixed on the signal feedthrough 43. As mentioned above, the signal feedthrough 43 is used to fix the signal wire 47, and input a signal to the signal wire or export a signal from the signal wire. In this embodiment, the signal feedthrough 43 is placed in a direction perpendicular to the radial direction of the signal wire 47 so as to better tension the signal wire 47. The signal wire perforating member 41 is composed of a positioning plate, and there is a distance between the positioning plate and the wire end fixing plate 32. A small hole is set at a position corresponding to the through hole 321 on the positioning plate and the wire end fixing plate 32. In this embodiment, the small hole corresponds to the through hole 321, which means that the center of the small hole and the center of the through hole 321 are on the same horizontal line. The aperture of the small hole is smaller than the aperture of the through hole 321, and slightly smaller than the diameter of the signal wire 47, but allows the signal wire 47 to pass through. That is, a transition fit of the base shaft system is adopted between the small hole and the signal wire 47. The signal wire 47 first passes through the through hole 321, and then passes through the small hole to connect with the signal feedthrough 43. Since the aperture of the through hole 321 is relatively large, the position of the signal wire 47 can be further limited by the small hole on the positioning plate.

[0045] The signal wire guide 42 is composed of a fixed pulley fixed on the positioning plate, and its function is to change the position of the signal wire through the fixed pulley so that it can be connected to the signal feedthrough 43 placed in a direction perpendicular to the radial direction of the signal wire 47. It should be noted that the fixed pulley structure is only a specific form of the signal wire guide 42, and other components with a steering function can also be used as the signal wire guide 42.

[0046] The signal wire tensioner 44 is located between the signal wire perforating member 41 and the signal wire guide member 42, on one side of the signal wire 47, which can be the left side or the right side. The signal wire tensioner 44 can be fixed on the positioning plate of the signal wire perforating member 41, away from the side of the wire end fixing plate 32. The signal wire tensioner 44 can be configured to include a motor and a push rod connected to the motor, and the motor drives the push rod to move in a radial direction perpendicular to the signal wire 47, that is, when the push rod is extended, the signal wire 47 is pushed from the left or right side. At this time, the signal wire 47 is tensioned, so that the signal wire 47 is a straight line when passing through the beam position detector. When the push rod is retracted, the signal wire 47 returns to a relaxed state. It should be noted that the structure of the signal wire tensioner 44 in this embodiment is only a schematic illustration, and the structures that can automatically perform piston movement in the prior art can be used for the signal wire tensioner 44 in this embodiment.

[0047] The signal wire two-dimensional adjustment member 46 is arranged between the positioning plate and the wire end fixing plate 32, which can drive the positioning plate to move horizontally and vertically, and is used to adjust the position of the positioning plate, especially the position accuracy of the small hole on the positioning plate corresponding to the through hole 321, so that the centers of the two are aligned, thereby adjusting the horizontal and vertical position accuracy of the signal wire 47 to make it coincide with the mechanical center of the beam detector.

[0048] In this embodiment, the structure of the signal wire two-dimensional adjustment member 46 is similar to the structure of the two-dimensional mobile platform 2, which includes a horizontal slide rail, a horizontal slider, a vertical slide rail and a vertical slider, and the horizontal slide rail is fixed on the wire end fixing plate 32. The horizontal slider is driven by a motor to reciprocate on the horizontal slide rail. The vertical slide rail is fixed on the horizontal slider, and the vertical slider is fixedly connected to the positioning plate, and the vertical slider is driven by a motor to reciprocate on the vertical slide rail. Thereby driving the positioning plate to perform two-dimensional movement relative to the wire end fixing plate 32. In this embodiment, the direction of the signal wire 47 can be adjusted by the signal wire two-dimensional adjustment member 46, so that the signal wire 47 is colinear with the mechanical center of the beam position detector, so as to find the calibrated mechanical center position and realize the accurate calibration of the beam position detector. The horizontal and vertical movement accuracy of the signal wire two-dimensional adjustment member 46 can be controlled within 0.05mm to ensure the positional requirements of the signal wire 47.

[0049] The calibration reference piece 45 is arranged just above the small hole on the positioning plate and is used to calibrate the position of the signal wire 47. That is, if the signal wire 47 is stretched or tightened excessively, it may break, so its length needs to be measured. In this embodiment, the length position is calibrated by the calibration reference piece 45. If the position of the calibration reference piece 45 exceeds the threshold, the signal wire 47 cannot be stretched. This prevents the calibration error caused by the insufficient rigidity of the measuring arm when directly measuring and calibrating the signal wire 47.

[0050] like Figure 5As shown, in this embodiment, a complete signal wire adjustment unit 4, that is, a signal adjustment unit 4 including all the above components, can be provided at both ends of the signal wire 47, or a complete signal wire adjustment unit 4 can be provided only at one end of the signal wire 47, and only a signal wire guide 42 and a signal feedthrough 43 can be provided at the other end of the signal wire 47, wherein the signal wire guide 42 is a fixed pulley fixed on the wire end fixing plate 32. The signal feedthrough 43 is fixed on the wire end fixing plate 32 through a bracket and connected to the other end of the signal wire 47.

[0051] like Figure 6 As shown, the detector support part 5 includes a welding platform 51, a height adjustment unit 52 and a support member 53. The height adjustment unit 52 is arranged on the welding platform 51, and the support member 53 is arranged on the height adjustment unit 52. The shape of the support member 53 varies according to the structure of the beam position detector. Taking the annular beam position detector on the HIAF as an example, the shape of its support member is a finely machined support groove. The welding platform 51 is finely machined on its upper and lower surfaces after welding to ensure the parallelism of the upper and lower planes and reduce the difficulty of leveling the beam position detector support adjustment platform. In order to facilitate the adjustment of the overall structure of the detector support part 5 and ensure the final calibration accuracy, the upper and lower planes of the welding platform 51 at the bottom are finely machined after welding, and the parallelism of the two planes is within 0.1mm; the height adjustment unit 52 installed thereon is locked at both ends after the overall structure is leveled, and it does not need to be adjusted in the subsequent calibration process of other beam position detectors.

[0052] In one embodiment of the present invention, Figure 7 As shown in the figure, the 202mm diameter large-aperture oblique beam position detector was calibrated by the calibration device, and its actual sensitivity coefficient K was obtained. X and K Y The value is very close to the simulation value, and the mapping diagram of the beam position detector is obtained, as shown in Figure 8 As shown, it provides data support for the online operation of the calibration device.

[0053] In another embodiment of the present invention, Fig. 9 As shown in the figure, the calibration device was used to calibrate the beam position detector with a diameter of 166 mm and its actual sensitivity coefficient K was obtained. X and K Y The value is very close to the simulation value, and the mapping diagram of the beam position detector is obtained, as shown in Fig.10 As shown, it provides data support for the online operation of the calibration device.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation of the present invention can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not deviate from the spirit and scope of the present invention should be included in the protection scope of the claims of the present invention. The above content is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A calibration device for a beam position detector, characterized in that: include: A horizontal support platform, a two-dimensional moving platform, a signal wire fixing unit, a signal wire adjusting unit and a detector support; The two-dimensional mobile platform is arranged on the horizontal supporting platform, the signal wire fixing unit is fixed on the two-dimensional mobile platform and is used to fix the signal wire. The detector supporting part is arranged on the horizontal supporting platform and is used to place the beam position detector. The signal wire passes through the beam position detector and passes through two opposite sides of the signal wire fixing unit and is connected with the signal feedthrough in the signal wire adjustment unit. The signal wire adjustment unit is fixed on two sides of the signal wire fixing unit and is used to tension the signal wire.

2. The calibration device for a beam position detector according to claim 1, characterized in that: The horizontal support platform includes a height-adjusting support column and a support platform. The height-adjusting support column is arranged below the support platform and is used to adjust the height of the support platform.

3. The calibration device for a beam position detector according to claim 2, characterized in that: The two-dimensional moving platform includes a horizontal moving part, a vertical moving part and a connecting part; the horizontal moving part is fixed at one end of the support platform, the vertical moving part can move horizontally on the horizontal moving part, the connecting part is arranged on the vertical moving part and can move up and down relative to the vertical moving part, and the connecting part is used to connect the signal wire fixing unit.

4. The calibration device for a beam position detector according to claim 3, characterized in that: The horizontal motion part includes a base plate, a guide groove, a guide rail, a slider, a horizontal support plate and a motor. The guide groove is arranged on the base plate, the guide rail is arranged on the guide groove, and the slider is arranged on the guide rail. The slider is driven to slide horizontally by a motor fixed to the base plate. A horizontal support plate is arranged on the slider to support the vertical motion part. Horizontal pressure plates are installed on both sides of the horizontal support plate to control the flatness of the slider.

5. The calibration device for a beam position detector according to claim 1, characterized in that: The signal wire fixing unit includes a cross beam, a wire end fixing plate and a reinforcing rib plate. The wire end fixing plates are two and are arranged opposite to each other. A through hole is arranged in the center of each wire end fixing plate for the signal wire to pass through. There are two cross beams, which form a frame structure with the two wire end fixing plates. The reinforcing rib plate is fixed on each cross beam to increase the rigidity of the cross beam.

6. The calibration device for a beam position detector according to claim 5, characterized in that: The signal wire adjustment unit includes a signal wire punching piece, a signal wire tensioning piece and a signal feedthrough. The signal wire punching piece includes a positioning plate. A small hole is arranged on the positioning plate, and its position corresponds to the position of the through hole of the wire end fixing plate. After the signal wire passes through the through hole, it passes through the small hole and the signal feedthrough. The aperture of the small hole is smaller than that of the through hole, and is used to limit the position of the signal wire. The signal wire tensioning piece is arranged on one side of the signal wire, and is a retractable structure. When the signal wire tensioning piece is extended, the signal wire is tensioned. The signal feedthrough is used to input or output the signal in the signal wire.

7. The calibration device for a beam position detector according to claim 6, characterized in that: The signal feedthrough in the signal wire adjustment unit is arranged in a direction perpendicular to the radial direction of the signal wire, and a signal wire guide for changing the direction of the signal wire is arranged between the signal feedthrough and the signal wire tensioning member.

8. The calibration device for a beam position detector according to claim 6, characterized in that: The signal wire adjustment unit further comprises a calibration reference piece, which is arranged on the top of the positioning plate and located directly above the small hole, and is used for calibrating the position of the signal wire.

9. The calibration device for a beam position detector according to claim 7, characterized in that: The signal wire adjustment unit also includes a signal wire two-dimensional adjustment member, which is arranged between the positioning plate and the wire end fixing plate and can drive the positioning plate to move horizontally and vertically to adjust the horizontal and vertical positions of the signal wire.

10. The calibration device for a beam position detector according to claim 3, characterized in that: The detector support part includes a welding platform, a height adjustment unit and a support member, wherein the height adjustment unit is arranged on the welding platform, and a support member is arranged on the height adjustment unit, wherein the support member is used to support the beam position detector, and the support member and the connecting part are finely machined support groove structures.

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