Positive electron beam transmission system

A technology of positron beam and flow transmission, applied in the fields of ion physics and accelerator physics, can solve the problems of large energy dissipation, affecting the use efficiency and application range of positrons, large divergence angle, etc., and achieve the effect of low cost

Inactive Publication Date: 2016-05-04
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Abstract
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Problems solved by technology

[0013] To sum up, all kinds of positron sources have the disadvantages of large divergence angle and large energy dissipation. Positrons will quickly diverge in a vacuum, which seriously affects the use efficiency and application range of positrons. They must be transported by positron beams. The system optimizes its beam quality

Method used

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  • Positive electron beam transmission system

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Embodiment Construction

[0025] The specific implementation manners of the present invention will be described in detail below in conjunction with the drawings and embodiments.

[0026] The following examples are only used to illustrate the present invention, but not to limit the present invention. Those skilled in the art may make various changes, substitutions and modifications without departing from the spirit and scope of the present invention, and therefore equivalent technical solutions also belong to the scope of the present invention.

[0027] The positron beam transmission system of the present invention includes a positron source and a beam transmission system.

[0028] The positron source in the present invention is the laser plasma positron source, which includes a laser light source, a vacuum target chamber, a flat mirror, an off-axis parabolic reflective focusing mirror, a gas target assembly, a tantalum target, and a collimator. The laser light is emitted from the laser light source, e...

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Abstract

The present invention provides a positive electron beam transmission system. The laser in the system is emitted from a laser source, enters a vacuum target chamber and is reflected by a plane mirror onto the reflection focusing mirror of an off-axis paraboloid; and the laser is focused at the position about 2mm far away from the top of a gas target assembly, a tantalum target is located behind the gas target assembly, and a sighting device is located behind the tantalum target. The beam transmission system comprises a vacuum pipeline, a solenoid coil, a dipolar magnet, a beam dustbin, the sighting device and another solenoid coil. The positive electrons and electrons enter the vacuum pipeline at the outside of the vacuum target chamber together and are focused by the solenoid coil, then negative electrons pass through the dipolar magnet and enter the beam dustbin, and the positive electrons pass through the sighting device and are focused by the solenoid coil behind the sighting device.

Description

technical field [0001] The invention belongs to the fields of plasma physics and accelerator physics, and in particular relates to a positron beam transmission system. Background technique [0002] Positrons are the first type of antimatter discovered by humans. From 1928 to 1931, British physicist P.A.MDirac predicted the existence of positrons. In 1932, American physicist C.DAnderson discovered the positron track when he used the Wilson cloud chamber to study cosmic rays, and confirmed the existence of positrons for the first time. exist. [0003] Annihilation occurs when positrons and negative electrons collide. At low energies, the mass of the positron and electron is converted into the energy of the gamma photon. At high energies, the annihilation of electrons and positrons produces elementary particles. Therefore, positrons have extremely important applications in the fields of high-energy physics, laboratory astrophysics, and material defect detection. [0004] a...

Claims

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Application Information

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IPC IPC(8): H05H6/00
CPCH05H6/00
Inventor 谷渝秋陈佳吴玉迟董克攻朱斌谭放张天奎王少义闫永宏于明海
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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