Detector and method for detecting beam position by using synchrotron radiation polarization

A beam position and detector technology, applied in the field of synchrotron radiation, can solve the problem of not being able to monitor the beam position well

Active Publication Date: 2020-11-24
INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI +1
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Problems solved by technology

When the center or distribution of the center cannot be seen, these two types of detectors cannot monitor the beam position well

Method used

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  • Detector and method for detecting beam position by using synchrotron radiation polarization
  • Detector and method for detecting beam position by using synchrotron radiation polarization
  • Detector and method for detecting beam position by using synchrotron radiation polarization

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Embodiment Construction

[0042] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0043] The present invention is an XBPM that uses the polarization properties of synchrotron radiation to capture its central location. The device mainly includes a graphite single wafer 1, a vacuum cavity 3, two beryllium windows 4, a magnetic fluid transmission mechanism 2, a motor 7, two fluorescent plates 5, a rotatable visible light sensor 6 and other components. The following combination figure 2 and image 3 A detailed introduction to the main components:

[0044] The graphite single wafer 1 with a small hole in the center is the probe part of the present invention. It has good permeability to the synchrotron radiation light source, has high thermal conductivity and low thermal expansion coefficient, and can bear the high thermal load of the insert light source. The design thickness of graphite single wafer 1 is 20 μm, the crystal orientation on the ...

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Abstract

The invention discloses a detector and method for detecting a beam position by using synchrotron radiation polarization, wherein the detector comprises a vacuum cavity (3), and two beryllium windows (4) are parallel to a synchrotron radiation light beam and are symmetrically disposed on the vacuum cavity (3). A magnetic fluid transmission mechanism (2) is connected with the vacuum cavity (3); theatmospheric end of the magnetic fluid transmission mechanism (2) is connected with a motor (7); the vacuum end of the magnetic fluid transmission mechanism (2) is connected with a clamping mechanism of a graphite single crystal wafer (1) in the vacuum cavity (3) and is used for adjusting and positioning the graphite single crystal wafer (1) to enable the graphite single crystal wafer (1) and the synchrotron radiation light beam to form a 45-degree angle or a -45-degree angle, the diffraction intensity of a linear sigma polarization component of the synchrotron radiation light beam is zero, thediffraction intensity of a pi polarization component is not zero, and the pi polarization component diffracts and is emitted to a corresponding fluorescent screen (5). A visible light sensor (6) is used for observing and recording a light-emitting image on the fluorescent screen (5).

Description

technical field [0001] The invention belongs to the technical field of synchrotron radiation, and relates to a detector, in particular to a detector and a method for detecting the beam position by using the polarization of synchrotron radiation. Background technique [0002] The synchrotron radiation light comes from the deflection of the high-energy electron beam in the storage ring in the magnetic field of the bending iron (Bending Magnet) or the insertion device (Insertion Devices), and the beam passes through the beamline to the experimental station for users to use. For synchrotron radiation experiments, the stability of the position and angle of the photon beam is very important. Therefore, there is a need for an instrument that can monitor the position of the synchrotron radiation—the position detector. [0003] The common beam position detector uses the photoelectric conversion characteristics or other optical characteristics of some materials to detect the intensit...

Claims

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Application Information

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IPC IPC(8): G01J1/42G01J1/04
CPCG01J1/0407G01J1/4257
Inventor 张小威朱晔杨俊亮李中亮
Owner INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
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