Conical cylinder shaped magnet based proton magnetic spectrometer

A magnetic spectrometer and cone technology, applied in the field of proton magnetic spectrometer, can solve the problems of difficult to collect proton signals, limit the solid angle of the target pill, and difficult experiments, etc., and achieve the effect of convenient use, light weight and small size

Active Publication Date: 2016-03-09
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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Problems solved by technology

This kind of experiment involves a wide range, the experiment is difficult, and there are many difficulties in diagnosis.
Due to the large number of laser paths, the existing magnetic spectrometer is used. Because of its large cross-section (80mm*60mm), the distance between the magnetic spectrometer and the target pellet is at least 100mm, otherwise the

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  • Conical cylinder shaped magnet based proton magnetic spectrometer
  • Conical cylinder shaped magnet based proton magnetic spectrometer

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Embodiment Construction

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments, and the mode of the present invention includes but not limited to the following embodiments.

[0030] Such as figure 1 As shown, the present invention provides a magnetic spectrometer, which includes a collimation slit 1 , a tapered cylindrical magnet device and a CR39 medium 5 . The collimation slit 1 is used to pass in protons and filter out protons with a larger horizontal divergence angle. In this embodiment, in order to ensure the accuracy of measurement, the slit width of the collimation slit 1 is 0.5 mm. The length is 16-18mm, and it is close to one side of the cone-shaped magnet device to ensure that the horizontal divergence angle of the protons entering the cone-shaped magnet device is less than 10mrad, and the deviation between the horizontal coordinate and the horizontal center of the magnet is within 0.25mm.

[0031] The conical cylindrical ma...

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Abstract

The present invention discloses a conical cylinder shaped magnet based proton magnetic spectrometer. The proton magnetic spectrometer comprises a collimating slit, a conical cylinder shaped magnet device and a CR39 medium, wherein the collimating slit is used for introducing protons and filtering protons with relatively large horizontal divergence angles; the conical cylinder shaped magnet device comprises an outer shell, an inner shell, and permanent magnets which are fixed between the outer shell and the inner shell and are distributed radially; a space surrounded by all the permanent magnets forms a magnetic field loop capable of enabling the motion direction of filtered protons to be deflected; and the CR39 medium is used for recording proton signals after deflection so as to obtain proton energy spectrum information. The conical cylinder shaped magnet based proton magnetic spectrometer disclosed by the present invention is reasonable in structure, ingenious in design and small in volume, well solves the technical defects of large volume, low magnetic field strength and nonuniform magnetic field distribution of an existing proton magnetic spectrometer, and realizes effective acquisition of proton signals, therefore, the conical cylinder shaped magnet based proton magnetic spectrometer disclosed by the present invention is suitable for popularization and application.

Description

technical field [0001] The invention relates to the fields of plasma physics and nuclear detection, in particular to a proton magnetic spectrometer based on a cone-shaped magnet. Background technique [0002] When a charged particle moves in a magnetic field, if there is a velocity component in the direction perpendicular to the magnetic field, it will be subjected to Lorentz force, which will change the direction of motion of the charged particle. When the magnetic field is perpendicular to the direction of motion, the charged particles will move in a circle, and the lower the energy of the particle, the larger the radius of the circle. In this way, the energy of the particle can be obtained by analyzing the radius of the circle. A device that generates a magnetic field is usually called a magnetic spectrometer. [0003] According to the theory of electrodynamics, the static magnetic field energy of each permanent magnet is certain, and if these energies are confined in a ...

Claims

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Application Information

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IPC IPC(8): H01J49/30H01J49/20
CPCH01J49/20H01J49/305
Inventor 陈佳滕建吴玉迟张天奎王少义于明海董克攻朱斌谭放闫永宏韩丹谷渝秋
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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