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CN-122017930-A - Resolution measurement tool convenient for improving size of beam section in accelerating tube

CN122017930ACN 122017930 ACN122017930 ACN 122017930ACN-122017930-A

Abstract

The invention discloses a resolution measurement tool convenient for improving the size of a beam section in an accelerating tube, which relates to the technical field of accelerating tube measurement and comprises a vacuum chamber, a target frame and a linear electric driving device, wherein an independent adjustable support base is arranged in the vacuum chamber, a cavity reflector is arranged in the independent adjustable support base, two groups of observation windows are arranged on one side, far away from the independent adjustable support base, of the vacuum chamber, a fluorescent target is arranged in the target frame, the device is provided with a function of reflecting fluorescence emitted by the fluorescent target through the cavity reflector, the fluorescence is led out from a right observation window and then is imaged by a CCD camera at the observation window through an optical path component, the structure can observe the shape of a beam spot through the CCD camera, and the resolution of the light beam during viewing can be improved by arranging the cavity reflector in the vacuum chamber.

Inventors

  • HU YONG
  • XING LEI
  • WANG YAPING
  • HUANG MIN
  • XING XIUBIN
  • CHENG YUHUA

Assignees

  • 安徽海泰科电子科技有限公司

Dates

Publication Date
20260512
Application Date
20260112

Claims (7)

  1. 1. The resolution measurement tool convenient for improving the size of the beam section in the accelerating tube comprises a vacuum chamber (1), a target frame (2) and a linear electric driving device (3) and is characterized in that an independent adjustable support base (5) is arranged in the vacuum chamber (1), a cavity reflector (6) is arranged in the independent adjustable support base (5), two groups of observation windows (4) are arranged on one side, far away from the independent adjustable support base (5), in the vacuum chamber (1), and fluorescent targets (7) are arranged in the target frame (2).
  2. 2. The resolution measuring tool for conveniently improving the beam cross section in the accelerating tube according to claim 1 is characterized in that one side of the output end of the linear electric driving device (3) is communicated with the vacuum chamber (1) through a target frame (2).
  3. 3. The resolution measurement tool for conveniently improving the beam cross section in an accelerating tube according to claim 1, wherein the independent adjustable support base (5) comprises a support frame (501) and a fixed shaft (502), the fixed shaft (502) is arranged in the support frame (501), a ratchet wheel (503) is arranged on the outer wall of the fixed shaft (502), an annular groove (504) is arranged on the outer wall of the support frame (501) through a bearing, and a connecting frame (509) connected with the intracavity reflector (6) is arranged on the outer wall of the annular groove (504).
  4. 4. The resolution measurement tool for conveniently improving the beam cross section in the accelerating tube according to claim 3 is characterized in that a movable groove (505) is formed in the annular groove (504), a T-shaped pull rod (506) is arranged in the movable groove (505), and a spring piece (507) matched with the outer wall of the ratchet wheel (503) is arranged at the bottom end of the T-shaped pull rod (506).
  5. 5. The resolution measuring tool for conveniently improving the beam cross section in the accelerating tube according to claim 4, wherein the outer wall of the T-shaped pull rod (506) is sleeved with a spring (508) connected with the inner wall of the movable groove (505).
  6. 6. The resolution measuring tool for conveniently improving the size of the beam cross section in the accelerating tube according to claim 1 is characterized in that a CCD camera is arranged on one side of the observation window (4).
  7. 7. The resolution measuring tool for conveniently improving the beam cross section in the accelerating tube according to claim 1 is characterized in that the intracavity reflector (6) is made of gold sheet.

Description

Resolution measurement tool convenient for improving size of beam section in accelerating tube Technical Field The invention relates to the technical field of accelerating tube measurement, in particular to a resolution measurement tool convenient for improving the size of a beam section in an accelerating tube. Background The hard X-ray free electronic laser device is one of the most efficient and advanced free electronic laser user devices in the world, and can provide tip research means such as high-resolution imaging, ultrafast process exploration, advanced structure analysis and the like for multiple subjects such as physics, chemistry, life science, material science, energy science and the like. For the hard X-ray project, the beam diagnosis system is an important component, and scientific researchers can measure various parameters of the beam through the beam diagnosis system so as to know the running state of the beam. The transverse beam profile diagnosis technology is always a key component of Free Electron Laser (FEL) design and optimization, and is widely applied to free electron laser devices. However, for SHINE engineering, part of the Profile target will be used for accurate spot size measurement in the case of small beam spots, ultra-short beam lengths, and the optimal measurement resolution requirement will be as low as 5um. Under the working parameters, the measurement resolution of the traditional Profile measurement system is mainly influenced by the excessive system point spread function caused by coherent OTR radiation (COTR) and the thickness of the target slice. Several experiments have reported observations of the adverse effects of COTR on the measurement, and the lateral dimensions of the beam spot of the SHINE device will be compressed to only 10 μm, and the excessive point spread function caused by the thickness of the target will amplify the resulting measurement error. For this purpose, a part of novel anti-COTR interference accurate measurement Profile measurement system is planned for the SHINE project. Disclosure of Invention The invention aims to provide a resolution measuring tool which is convenient for improving the size of a beam section in an accelerating tube so as to solve the related problems in the prior art. In order to solve the technical problems, the invention provides the technical scheme that the resolution measuring tool for conveniently improving the beam cross section size in the accelerating tube comprises a vacuum chamber, a target frame and a linear electric driving device, wherein an independent adjustable supporting base is arranged in the vacuum chamber, a cavity reflector is arranged in the independent adjustable supporting base, two groups of observation windows are arranged on one side, far away from the independent adjustable supporting base, in the vacuum chamber, and a fluorescent target is arranged in the target frame. As a preferable scheme of the resolution measuring tool for conveniently improving the beam cross section size in the accelerating tube, one side of the output end of the linear electric driving device is communicated with the vacuum chamber through the target frame. As a preferable scheme of the resolution measuring tool convenient for improving the beam cross section size in the accelerating tube, the independent adjustable supporting base comprises a supporting frame and a fixed shaft, the fixed shaft is arranged in the supporting frame, a ratchet wheel is arranged on the outer wall of the fixed shaft, an annular groove is arranged on the outer wall of the supporting frame through a bearing, and a connecting frame connected with the intracavity reflecting mirror is arranged on the outer wall of the annular groove. As a preferable scheme of the resolution measuring tool for conveniently improving the size of the beam section in the accelerating tube, the movable groove is formed in the annular groove, the T-shaped pull rod is arranged in the movable groove, and the bottom end of the T-shaped pull rod is provided with the elastic sheet matched with the outer wall of the ratchet wheel. As a preferable scheme of the resolution measuring tool convenient for improving the size of the beam section in the accelerating tube, the outer wall of the T-shaped pull rod is sleeved with the spring connected with the inner wall of the movable groove. As a preferable scheme of the resolution measuring tool convenient for improving the size of the beam section in the accelerating tube, one side of the observation window is provided with the CCD camera. As a preferable scheme of the resolution measuring tool for conveniently improving the size of the beam section in the accelerating tube, the intracavity reflector is made of gold sheet. The resolution measurement tool for conveniently improving the size of the beam section in the accelerating tube has the beneficial effects that: 1. the invention adopts the fluorescent target to emit fluorescen