Method for constructing magnetic spectrograph for measuring power spectrum of charged particle to reduce caliber error

A technology of charged particles and construction method, which is applied in the direction of X-ray energy spectrum distribution measurement, etc., can solve the problems of increasing measurement error, system error, and particles cannot be deposited, and achieve the effect of reducing system error and improving measurement accuracy

Active Publication Date: 2018-01-19
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

However, this traditional magnetic spectrometer has a significant disadvantage that the system error is introduced by the aperture of the injection hole, such as figure 1 As shown in (c), it is proportional to the size of the pore, and the number of injected particles is related to the size of the pore. In order to ensure the number of injected particles, the injection hole must maintain a certain si

Method used

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  • Method for constructing magnetic spectrograph for measuring power spectrum of charged particle to reduce caliber error
  • Method for constructing magnetic spectrograph for measuring power spectrum of charged particle to reduce caliber error
  • Method for constructing magnetic spectrograph for measuring power spectrum of charged particle to reduce caliber error

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[0026] The present invention will be further described below in conjunction with the description of the drawings and the embodiments. The manner of the present invention includes but is not limited to this embodiment.

[0027] See figure 2 , figure 2 It is the assembly diagram of the magnetic spectrometer for measuring the energy spectrum of charged particles to reduce the aperture error of the present invention, (a) is the structure diagram, and (b) is the explosion diagram. As shown in the figure, two permanent magnets with stable performance are used as the magnetic source 6, combined with pig iron or low carbon steel with good magnetic permeability as the frame 2 and the sealing plate 1, to form a uniformly closed magnetic field area that meets the design strength (generally Choose the uniform magnetic field in the middle as the working area);

[0028] Two coaxial holes are opened at the front and rear positions of the frame for the alignment and positioning of the spectromet...

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Abstract

The invention discloses a method for constructing a magnetic spectrograph for measuring power spectrum of charged particles to reduce caliber errors. The method includes the steps of designing the shape of the bottom support if a detector and constructing a magnetic spectrograph. A simple and compact structure is provided, the bottom support is designed because the primary focusing position of a charged particle beam accords with the characteristics of a hyperbola, and system errors caused by introduction of a filling hole are reduced greatly. Moreover, in the center of a multi-position magnetic field of an effective region through which particles pass, the influence of boundary effects is slight, the measurement precision is improved substantially, and the method is suitable for popularization and application.

Description

technical field [0001] The invention relates to the field of charged particle energy spectrum measurement, in particular to a construction method of a magnetic spectrometer for measuring charged particle energy spectrum and reducing aperture errors. Background technique [0002] A magnetic spectrometer is an instrument that uses the characteristic that the deflection radius of charged particles changes with energy (kinetic energy) in a magnetic field to measure the energy spectrum distribution of charged particles. Existing magnetic spectrometers are usually as figure 1 As shown, a uniform and closed magnetic field area is formed inside the magnetic spectrometer by the permanent magnet 6, the magnetic conductor middle frame 2 and the sealing plate 1. The detection medium 7 is fixed on a bottom mop, and the detection medium is sent into a specific position of the magnetic field through the bottom mop. Location. The magnetic spectrometer is aimed at the emission source throu...

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Application Information

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IPC IPC(8): G01T1/36
Inventor 刘会亚康宁周申蕾林尊琪
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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