CN112461509B - Welding type target seat for particle accelerator element collimation measurement and use method thereof - Google Patents
Welding type target seat for particle accelerator element collimation measurement and use method thereof Download PDFInfo
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- CN112461509B CN112461509B CN202011221800.8A CN202011221800A CN112461509B CN 112461509 B CN112461509 B CN 112461509B CN 202011221800 A CN202011221800 A CN 202011221800A CN 112461509 B CN112461509 B CN 112461509B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0221—Testing optical properties by determining the optical axis or position of lenses
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
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Abstract
The invention relates to a welded target seat for particle accelerator element collimation measurement and a use method thereof, which are characterized by comprising a target seat substrate, a permanent magnet and a clamp spring; a stress release groove for releasing stress after welding the target base substrate and the particle accelerator is formed in the lower circumferential direction of the target base substrate; a central hole is formed in the base body of the target base, and a permanent magnet for magnetically attracting a target ball of the laser tracker is arranged in the central hole; the target base is positioned above the permanent magnet, a clamping groove is formed in the target base body, and a clamping spring for clamping and fixing the permanent magnet is arranged in the clamping groove; the top of the target base body above the clamping groove is provided with three arc-shaped grooves at uniform intervals, a boss at the intersection of every two of the three arc-shaped grooves is provided with a measurement reference arc surface, and the measurement reference arc surface is used for matching and connecting the target base body and a target ball of the laser tracker in the measurement process.
Description
Technical Field
The invention relates to a welding type target seat for collimating measurement of a particle accelerator element and a using method thereof, belonging to the technical field of collimating measurement of a particle accelerator by using a laser tracker.
Background
With the continuous increase of the complexity and the mass of the large-scale particle accelerator, the precision requirement of the alignment installation of the particle accelerator elements is higher and higher, the traditional measuring instrument and the alignment measuring method are difficult to meet the measurement precision requirement, and a high-precision three-dimensional measuring instrument is often required to finish the alignment measurement work in the measurement. In order to transmit charged particles in an accelerating device according to a theoretical orbit of physical design and reduce the loss of beam in a pipeline aperture as much as possible, the installation collimation precision of a particle accelerator element must be ensured to meet the physical design requirement, particularly, the collimation precision of an electromagnet and other elements playing a leading role in an accelerator directly causes the closed orbit distortion and the increase of emittance of accelerated beam, and further influences the quality and the service life of the accelerated beam.
In order to accurately mount and align a particle accelerator element at a physical design position, the prior art commonly adopts a laser tracker alignment method based on welding a target seat on the outer surface of the particle accelerator element, calibrates the geometric center of the element based on the target seat welded on the surface of the particle accelerator element in advance, measures and monitors target seat calibration data on the outer surface of the particle accelerator element by using a laser tracker through the conversion of a space coordinate system by means of a three-dimensional control network on an accelerator mounting site, and accurately aligns the coordinate position and the posture of the particle accelerator element to a theoretical design position by referring to the monitored value and the three-dimensional deviation amount of the calibration value of the target seat on the outer surface of the element through adjustment. Because the calibration and alignment installation of the particle accelerator component need to be completed by measuring the data of the target holder on the outer surface through the laser tracker for many times, the target holder installed on the surface of the particle accelerator component is a very important part in the alignment measurement process, and the structure and the installation mode of the target holder directly influence the stability and the measurement accuracy of the measurement target ball of the laser tracker.
Generally, a conventional target seat on the market is made of stainless steel or carbon steel materials with the diameter of 35mm, and in order to enable a measurement target ball of a laser tracker to be stably combined with the target seat, a permanent magnet with strong magnetism is firmly bonded in the target seat, the permanent magnet cannot be taken out, and a stress release groove is not reserved in the target seat. In order to permanently and stably mount the target holder on the surface of the accelerator magnet element, a welding process is generally adopted for mounting, however, if a conventional laser tracker target holder is used, the built-in permanent magnet is demagnetized due to high temperature during welding, and the target holder is deformed due to stress release after welding, so that the matching performance and the measurement accuracy between the target holder and the laser tracker measurement target ball are directly influenced.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a welded target holder for alignment measurement of a particle accelerator component and a method for using the same, which can solve the problems of high temperature demagnetization of a built-in magnet and deformation of a measurement standard during welding of the target holder and the component.
In order to achieve the purpose, the invention adopts the following technical scheme: a welded target holder for particle accelerator component collimation measurement comprises a target holder base body, a permanent magnet and a clamp spring;
a stress release groove for releasing stress after welding the target base substrate and the particle accelerator is formed in the lower circumferential direction of the target base substrate; a central hole is formed in the base body of the target base, and a permanent magnet for magnetically attracting a target ball of the laser tracker is arranged in the central hole; the target base is positioned above the permanent magnet, a clamping groove is formed in the target base body, and a clamping spring for clamping and fixing the permanent magnet is arranged in the clamping groove;
the laser tracker target ball measuring device is characterized in that three arc-shaped grooves are formed in the top of the target base body above the clamping groove at even intervals, a measuring reference arc surface is arranged on a boss at the intersection of every two arc-shaped grooves and used for matching the target base body with a laser tracker target ball in the measuring process.
Further, the target seat base body adopts a stainless steel columnar structure with the diameter of 26 mm.
Further, the laser tracker target ball is made of 1.5-inch steel.
Further, the arc-shaped groove is petal-shaped.
Further, the radius of the measurement reference cambered surface is the same as that of the target ball of the laser tracker.
A method for using a welding type target holder for particle accelerator element collimation measurement comprises the following steps:
1) welding the welding type target seats at the designated positions of the particle accelerator element at intervals, and erecting a laser tracker on one side of the particle accelerator element;
2) the laser tracker is freely arranged, and according to the sequence of the numbers of the target base matrixes on the particle accelerator element, the laser tracker is adopted to respectively measure the three-dimensional coordinate data of the measurement reference cambered surface on each target base matrix relative to the laser tracker through the target ball of the laser tracker;
3) constructing a component coordinate system of the particle accelerator component, converting the measured three-dimensional coordinate data into three-dimensional coordinate data relative to the component coordinate system of the particle accelerator, and storing the three-dimensional coordinate data as calibration data of the particle accelerator component;
4) on the installation site of the particle accelerator element, an installation coordinate system of the particle accelerator element is constructed by adopting measurement software, and calibration data of the particle accelerator element is imported under the installation coordinate system;
5) monitoring the difference value of the actual three-dimensional coordinate data of each measurement reference cambered surface of the target ball of the laser tracker in the installation coordinate system of the particle accelerator element and the three-dimensional coordinate data of the calibration data of the particle accelerator element in the installation coordinate system of the particle accelerator element in real time;
6) manually adjusting the particle accelerator element according to the difference value of the three-dimensional coordinate data monitored in real time until the particle accelerator element is adjusted to a theoretical position;
7) calculating the deviation amount between the geometric center and the theoretical position of the particle accelerator element according to the actual three-dimensional coordinate data of each measurement reference cambered surface under the adjusted installation coordinate system of the particle accelerator element and the calibration data of the particle accelerator element;
8) judging whether the calculated deviation amount meets the preset precision requirement, if not, entering the step 6) until the calculated deviation amount meets the preset precision requirement; if the measured values are consistent with the preset values, the measurement result is saved, and the mounting alignment of the particle accelerator element is completed.
Further, the specific process of the step 1) is as follows:
1.1) welding a plurality of target seat matrixes at specified positions of a particle accelerator element at intervals;
1.2) standing the welded particle accelerator element for several hours at room temperature, and releasing the stress of the corresponding target seat base body after welding through the stress release groove at the lower part of each target seat base body;
1.3) arranging permanent magnets in the central hole of each target seat base body, arranging clamp springs in the clamping grooves of each target seat base body, and fixing each permanent magnet in the corresponding target seat base body through the corresponding clamp spring;
1.4) erecting a laser tracker on one side of the particle accelerator element, so that the measurement range of the laser tracker can cover all target seat matrixes welded on the particle accelerator element;
and 1.5) respectively placing the target balls of the laser tracker on the measuring reference cambered surfaces of the corresponding target seat matrixes, wherein the target balls of the laser tracker are closely matched and connected with the corresponding measuring reference cambered surfaces through the magnetic attraction of the corresponding permanent magnets, so that errors are eliminated.
Further, the specific process of step 3) is as follows:
3.1) measuring a collimation reference reserved outside the particle accelerator element to construct the geometric center of the particle accelerator element;
3.2) constructing an element coordinate system of the particle accelerator element by taking the constructed geometric center as a coordinate origin and the beam advancing direction as a Z axis;
3.3) converting the three-dimensional coordinate data of the determined measurement reference cambered surface on each target seat substrate relative to the laser tracker into three-dimensional coordinate data relative to a particle accelerator element coordinate system, and storing the three-dimensional coordinate data as calibration data of the particle accelerator element.
Further, the specific process of the step 4) is as follows:
4.1) in the installation site of the particle accelerator element, measuring a three-dimensional collimation control network which is arranged in the installation site in advance through a laser tracker by adopting measurement software, and positioning the laser tracker in the global installation coordinate system of the particle accelerator;
4.2) based on the global installation coordinate system of the particle accelerator, constructing the installation coordinate system of the particle accelerator element in the measurement software according to the physical design coordinate of the particle accelerator element relative to the global installation coordinate system;
4.3) introducing the calibration data of the particle accelerator element under the installation coordinate system of the particle accelerator element by using measurement software.
Further, the specific process of step 7) is as follows:
7.1) measuring the actual three-dimensional coordinate data of each measurement reference cambered surface under the installation coordinate system of the adjusted particle accelerator element again through the laser tracker;
and 7.2) calculating the deviation amount of the geometric center and the theoretical position of the accelerator quadrupole lens in 6 degrees of freedom by adopting measurement software according to the adjusted actual three-dimensional coordinate data of each measurement reference cambered surface and the calibration data of the accelerator quadrupole lens.
Due to the adoption of the technical scheme, the invention has the following advantages:
1. the target base body can be arranged on a particle accelerator element which is measured in an alignment mode through a welding process, deformation of a part of measurement reference above the stress release groove can be reduced through the stress release groove arranged at the lower portion of the target base body, and the problem of welding deformation of a laser tracker target base which is arranged on the surface of the particle accelerator element through the welding process in the prior art is solved.
2. According to the invention, as the structure of the clamp spring and the embedded permanent magnet is arranged in the target seat base body, the built-in permanent magnet can be installed or disassembled according to the field requirements in the use process, so that the high-temperature demagnetization caused by the built-in permanent magnet of the target seat base body in the welding process with the particle accelerator element can be effectively prevented, the target seat base body can not lose magnetism after welding, and the precise matching connection between the measurement reference cambered surface of the target seat and the measurement target ball of the laser tracker is ensured.
3. When the device is used, the permanent magnet and the clamp spring are installed after the stress to be welded is released, and the permanent magnet is fixed in the target by the clamp spring, so that the stability and the measurement precision of the measurement reference cambered surface of the target ball and the target seat of the laser tracker can be ensured in the measurement process, and the device can be widely applied to the technical field of collimation measurement of particle accelerator elements by using the laser tracker.
Drawings
FIG. 1 is a schematic diagram of a vertical cross-section of a welded target mount according to the present invention;
FIG. 2 is a top view of a welding-type target holder of the present invention;
FIG. 3 is a schematic illustration of the mating of a welding-type target holder with a laser tracker ball according to the present invention;
fig. 4 is a schematic view of the installation and application of the welding type target holder in the quadrupole lens of the accelerator.
Detailed Description
The present invention is described in detail below with reference to the attached drawings. It is to be understood, however, that the drawings are provided solely for the purposes of promoting an understanding of the invention and that they are not to be construed as limiting the invention. In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 3, the welded target holder for alignment measurement of a particle accelerator element provided by the present invention includes a target holder base 1, a stress relief groove 2, a permanent magnet 3, a clamping groove 4, a clamp spring 5, an arc groove 6, and a measurement reference arc surface 7.
And a stress release groove 2 is formed in the lower circumferential direction of the target base substrate 1 and used for releasing stress after the target base substrate 1 and the particle accelerator element are welded. A central hole is formed in the base body 1 of the target seat, and a permanent magnet 3 is arranged in the central hole and used for magnetically attracting a target ball 8 of the laser tracker. And a clamping groove 4 is formed in the target base body 1 above the permanent magnet 3, and a clamping spring 5 for clamping and fixing the permanent magnet 3 is arranged in the clamping groove 4.
The top of the target base matrix 1 above the clamping groove 4 is provided with three petal-shaped arc grooves 6 at even intervals, a boss at the intersection of every two of the three arc grooves 6 is provided with a measurement reference arc surface 7 with the same radius as the target ball 8 of the laser tracker, and the measurement reference arc surface 7 is used for precise matching and connection of the target base matrix 1 and the target ball 8 of the laser tracker in the measurement process.
In a preferred embodiment, the target holder base 1 may be a stainless steel cylindrical structure with a diameter of 26 mm.
In a preferred embodiment, the laser tracker target ball 8 may be a 1.5 inch steel laser tracker target ball.
The following describes in detail the method of using the welding type target holder for the alignment measurement of the particle accelerator component, with an accelerator quadrupole lens in the particle accelerator as a specific embodiment:
1) as shown in fig. 4, a plurality of target holder substrates 1 of the present invention are welded at intervals at designated positions (B1, B2 … B6) on the upper surface and the side surface of the accelerator quadrupole lens, wherein the welding positions and numbers of the target holder substrates 1 can be set according to actual situations, which is not described herein.
2) The welded accelerator quadrupole lens is stood for more than 5 hours at room temperature, and the deformation stress at the top of the target base body 1 caused by high temperature in the welding process is absorbed and eliminated through the stress release groove 2 at the lower part of the target base body 1, so that the deformation of the measurement reference cambered surface 7 is reduced.
3) After the stress is released, a permanent magnet 3 is arranged in the central hole of each target base matrix 1, a clamp spring 5 is arranged in a clamp groove 4 of each target base matrix 1, and the permanent magnet 3 in the central hole of each target base matrix 1 is fixed in the corresponding target base matrix 1 through the corresponding clamp spring 5.
4) The laser tracker is arranged on one side (about 2m range) of the accelerator quadrupole lens, so that the measuring range of the laser tracker can cover all target holder substrates 1 welded on the accelerator quadrupole lens.
5) The laser tracker target balls 8 are respectively placed on the measurement reference cambered surfaces 7 of the corresponding target seat base bodies 1 according to numbers, the laser tracker target balls 8 are closely matched and connected with the corresponding measurement reference cambered surfaces 7 through the magnet attraction of the permanent magnets 3 arranged in the corresponding target seat base bodies 1, and the measurement error caused by unconscious shaking of human hands when an operator places the laser tracker target balls 8 in the measurement process is eliminated.
6) The laser tracker freely establishes a station, and according to the sequence of the numbers of the target base substrates 1 on the accelerator quadrupole lens, the laser tracker is adopted to respectively measure the three-dimensional coordinate data of the measuring reference cambered surface 7 on each target base substrate 1 relative to the laser tracker through the target ball 8 of the laser tracker.
7) Constructing an element coordinate system (namely a coordinate system a in fig. 4) of the accelerator quadrupole lens, converting the three-dimensional coordinate data measured in the step 6) into three-dimensional coordinate data relative to the element coordinate system of the accelerator quadrupole lens, and storing the three-dimensional coordinate data as calibration data of the accelerator quadrupole lens, specifically:
7.1) measuring a collimation reference reserved outside the accelerator quadrupole lens to construct the geometric center of the accelerator quadrupole lens.
And 7.2) constructing an element coordinate system of the accelerator quadrupole lens by taking the constructed geometric center as a coordinate origin and the beam advancing direction as a Z axis.
7.3) converting the three-dimensional coordinate data of the measuring reference cambered surface 7 on each target seat substrate 1 measured in the step 6) relative to the laser tracker into three-dimensional coordinate data relative to an accelerator quadrupole lens element coordinate system, and storing the three-dimensional coordinate data as calibration data of the accelerator quadrupole lens.
8) At the installation site of the accelerator quadrupole lens, measurement software (for example: SA (Spatial Analyzer, Spatial analysis) measurement software), constructing an installation coordinate system of the accelerator quadrupole lens according to physical design coordinates of the accelerator quadrupole lens relative to a global installation coordinate system of the particle accelerator, and importing calibration data of the accelerator quadrupole lens obtained in step 7) under the installation coordinate system, specifically:
8.1) in the installation site of the quadrupole lens of the accelerator, measuring a three-dimensional collimation control network which is arranged in the installation site in advance through a laser tracker by adopting measurement software, and positioning the laser tracker in the global installation coordinate system of the particle accelerator.
8.2) based on the global installation coordinate system of the particle accelerator, constructing the installation coordinate system of the accelerator quadrupole lens in the measurement software according to the physical design coordinates of the accelerator quadrupole lens relative to the global installation coordinate system.
8.3) introducing the calibration data of the accelerator quadrupole lens obtained in the step 7) under the installation coordinate system of the accelerator quadrupole lens by adopting measurement software.
9) And (3) monitoring the difference value of the actual three-dimensional coordinate data (measured position) of each measurement reference cambered surface 7 of the target ball 8 of the laser tracker in the installation coordinate system of the accelerator quadrupole lens and the three-dimensional coordinate data of the calibration data (theoretical position) of the accelerator quadrupole lens in the installation coordinate system of the accelerator quadrupole lens in real time by adopting the laser tracker and matching with measurement software.
10) According to the difference value of the actual three-dimensional coordinate data of each measurement reference cambered surface 7 under the installation coordinate system of the accelerator quadrupole lens and the three-dimensional coordinate data of the calibration data of the accelerator quadrupole lens under the installation coordinate system of the accelerator quadrupole lens, which is monitored in real time, the three-dimensional adjustable support of the accelerator quadrupole lens is manually adjusted, and the accelerator quadrupole lens is sequentially and gradually adjusted to a theoretical position, namely the difference value of the three-dimensional coordinate data monitored in real time is 0.
11) Calculating the deviation value between the geometric center and the theoretical position of the accelerator quadrupole lens according to the actual three-dimensional coordinate data of each measurement reference cambered surface 7 under the adjusted installation coordinate system of the accelerator quadrupole lens and the calibration data of the accelerator quadrupole lens by adopting a laser tracker and matching with measurement software, and specifically comprises the following steps:
11.1) measuring the actual three-dimensional coordinate data of each measuring reference cambered surface 7 under the installation coordinate system of the adjusted accelerator quadrupole lens again through the laser tracker.
11.2) calculating the deviation amount of the geometric center and the theoretical position of the accelerator quadrupole lens in 6 degrees of freedom (3 displacement amounts and 3 rotation amounts) by adopting measurement software according to the adjusted actual three-dimensional coordinate data of each measurement reference cambered surface 7 and the calibration data of the accelerator quadrupole lens.
12) Judging whether the installation collimation result (namely the deviation calculated in the step 11) of the accelerator quadrupole lens meets the preset precision requirement or not, if so, storing the measurement result, and completing the installation collimation of the accelerator quadrupole lens; if not, the step 10) is carried out until the installation collimation result of the accelerator quadrupole lens meets the preset precision requirement.
The above embodiments are only used for illustrating the present invention, and the structure, connection mode, manufacturing process, etc. of the components may be changed, and all equivalent changes and modifications performed on the basis of the technical solution of the present invention should not be excluded from the protection scope of the present invention.
Claims (10)
1. A welded target holder for particle accelerator component collimation measurement is characterized by comprising a target holder matrix, a permanent magnet and a clamp spring;
a stress release groove for releasing stress after welding the target seat substrate and the particle accelerator element is formed in the lower circumferential direction of the target seat substrate; a central hole is formed in the base body of the target base, and a permanent magnet for magnetically attracting a target ball of the laser tracker is arranged in the central hole; the target base is positioned above the permanent magnet, a clamping groove is formed in the target base body, and a clamping spring for clamping and fixing the permanent magnet is arranged in the clamping groove;
the laser tracker target ball measuring device is characterized in that three arc-shaped grooves are uniformly formed in the top of the target base body above the clamping groove at intervals, measuring reference arc surfaces are arranged on bosses at the intersection of every two arc-shaped grooves and used for matching the target base body with a laser tracker target ball in the measuring process.
2. A welded target holder for particle accelerator component alignment measurement as claimed in claim 1 wherein the target holder base is a stainless steel cylindrical structure with a diameter of 26 mm.
3. A welded target holder for alignment measurement of particle accelerator components as claimed in claim 1 wherein said laser tracker ball is a 1.5 inch steel laser tracker ball.
4. A welded target holder for alignment measurement of particle accelerator components as recited in claim 1 wherein said arcuate recesses are petaloid.
5. A particle accelerator member alignment measuring welding-type target holder as claimed in claim 1 wherein the radius of the measurement reference arc is the same as the radius of the laser tracker target ball.
6. A method of using a welded target holder based on the alignment measurement of a particle accelerator component as claimed in any one of claims 1 to 5, comprising:
1) welding the welding type target seats at the designated positions of the particle accelerator element at intervals, and erecting a laser tracker on one side of the particle accelerator element;
2) the laser tracker is freely arranged, and according to the sequence of the numbers of the target base matrixes on the particle accelerator element, the laser tracker is adopted to respectively measure the three-dimensional coordinate data of the measurement reference cambered surface on each target base matrix relative to the laser tracker through the target ball of the laser tracker;
3) constructing an element coordinate system of the particle accelerator element, converting the measured three-dimensional coordinate data into three-dimensional coordinate data relative to the element coordinate system of the particle accelerator element and storing the three-dimensional coordinate data as calibration data of the particle accelerator element;
4) on the installation site of the particle accelerator element, an installation coordinate system of the particle accelerator element is constructed by adopting measurement software, and calibration data of the particle accelerator element is imported under the installation coordinate system;
5) monitoring the difference value of the actual three-dimensional coordinate data of each measurement reference cambered surface of the target ball of the laser tracker in the installation coordinate system of the particle accelerator element and the three-dimensional coordinate data of the calibration data of the particle accelerator element in the installation coordinate system of the particle accelerator element in real time;
6) manually adjusting the particle accelerator element according to the difference value of the three-dimensional coordinate data monitored in real time until the particle accelerator element is adjusted to a theoretical position;
7) calculating the deviation amount between the geometric center and the theoretical position of the particle accelerator element according to the actual three-dimensional coordinate data of each measurement reference cambered surface under the adjusted installation coordinate system of the particle accelerator element and the calibration data of the particle accelerator element;
8) judging whether the calculated deviation amount meets the preset precision requirement, if not, entering the step 6) until the calculated deviation amount meets the preset precision requirement; if the measured values are consistent with the preset values, the measurement result is saved, and the mounting alignment of the particle accelerator element is completed.
7. The method for using the welding-type target holder for the alignment measurement of the particle accelerator components as claimed in claim 6, wherein the specific process of the step 1) is as follows:
1.1) welding a plurality of target seat matrixes at specified positions of a particle accelerator element at intervals;
1.2) standing the welded particle accelerator element for several hours at room temperature, and releasing the stress of the welded corresponding target seat base body through a stress release groove at the lower part of each target seat base body;
1.3) arranging permanent magnets in the central hole of each target seat base body, arranging clamp springs in the clamping grooves of each target seat base body, and fixing each permanent magnet in the corresponding target seat base body through the corresponding clamp spring;
1.4) erecting a laser tracker on one side of the particle accelerator element, so that the measurement range of the laser tracker can cover all target seat matrixes welded on the particle accelerator element;
and 1.5) respectively placing the target balls of the laser tracker on the measuring reference cambered surfaces of the corresponding target seat matrixes, wherein the target balls of the laser tracker are closely matched and connected with the corresponding measuring reference cambered surfaces through the magnetic attraction of the corresponding permanent magnets, so that errors are eliminated.
8. The method for using the welding-type target holder for the alignment measurement of the particle accelerator components as claimed in claim 6, wherein the specific process of the step 3) is as follows:
3.1) measuring a collimation reference reserved outside the particle accelerator element to construct the geometric center of the particle accelerator element;
3.2) constructing an element coordinate system of the particle accelerator element by taking the constructed geometric center as a coordinate origin and the beam advancing direction as a Z axis;
3.3) converting the three-dimensional coordinate data of the determined measurement reference cambered surface on each target seat substrate relative to the laser tracker into three-dimensional coordinate data relative to a particle accelerator element coordinate system, and storing the three-dimensional coordinate data as calibration data of the particle accelerator element.
9. The method for using the welding-type target holder for the alignment measurement of the particle accelerator components as claimed in claim 6, wherein the specific process of the step 4) is as follows:
4.1) in the installation site of the particle accelerator element, measuring a three-dimensional collimation control network which is arranged in the installation site in advance through a laser tracker by adopting measurement software, and positioning the laser tracker in the global installation coordinate system of the particle accelerator;
4.2) based on the global installation coordinate system of the particle accelerator, constructing the installation coordinate system of the particle accelerator element in the measurement software according to the physical design coordinate of the particle accelerator element relative to the global installation coordinate system;
4.3) introducing the calibration data of the particle accelerator element under the installation coordinate system of the particle accelerator element by adopting space analysis measurement software.
10. The method for using the welding-type target holder for the alignment measurement of the particle accelerator components as claimed in claim 6, wherein the specific process of the step 7) is as follows:
7.1) measuring the actual three-dimensional coordinate data of each measurement reference cambered surface under the installation coordinate system of the adjusted particle accelerator element again through the laser tracker;
and 7.2) calculating the deviation amount of the geometric center and the theoretical position of the accelerator quadrupole lens in 6 degrees of freedom by adopting space analysis measurement software according to the adjusted actual three-dimensional coordinate data of each measurement reference cambered surface and the calibration data of the accelerator quadrupole lens.
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| US6219931B1 (en) * | 1998-03-10 | 2001-04-24 | Northrop Grumman Corporation | Target base for a measuring system |
| CN101813477B (en) * | 2010-01-28 | 2013-03-27 | 中铁宝桥集团有限公司 | Bolting type target base special for laser tracking measuring instrument |
| CN105157685B (en) * | 2015-08-12 | 2018-06-29 | 中航通飞华南飞机工业有限公司 | A kind of measurement target drone pedestal and full machine measure landmark system |
| CN208746271U (en) * | 2018-08-28 | 2019-04-16 | 成都飞机工业（集团）有限责任公司 | A kind of target seat |
| CN110793434A (en) * | 2019-10-12 | 2020-02-14 | 哈尔滨飞机工业集团有限责任公司 | Calibration device and calibration method for target base of laser tracker |
| CN110978062A (en) * | 2020-01-20 | 2020-04-10 | 上海交通大学烟台信息技术研究院 | Robot is markd with fast assembly high accuracy positioning with target seat |
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