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Stripping extraction cyclotron single-circle beam extraction device and method

A cyclotron and extraction device technology, which is applied to magnetic resonance accelerators, accelerators, electrical components, etc., can solve the problem of low beam quality and achieve the effect of high extraction beam quality

Active Publication Date: 2020-03-24
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention proposes a single-turn beam extraction device and method of a cyclotron for stripping and extraction. not high problem

Method used

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  • Stripping extraction cyclotron single-circle beam extraction device and method
  • Stripping extraction cyclotron single-circle beam extraction device and method
  • Stripping extraction cyclotron single-circle beam extraction device and method

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Embodiment 1

[0040] Such as image 3 As shown, take the 100MeV stripping-induced high-current cyclotron built by the Institute of Atomic Energy as an example. The beam alignment of the 100MeV high-current proton cyclotron is good, and the amplitude of the radial oscillation is controlled below 0.5mm. By loading the beam phase selection system in the small radius direction, the accelerated beam phase width is controlled within 5 degrees. The 100MeV cyclotron has two extraction and stripping targets facing each other at 180 degrees, that is, there are two proton beam extraction channels. The position of the stripping film can be moved along the radial direction driven by the stripping target device, and the minimum radius of insertion is 1.6 meters. .

[0041] image 3 It is the effect drawing of the single-circle extraction of the stripping target position, which is the result of the phase width of 5 degrees. Particles at the extraction position with a phase width of 5 degrees will have...

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Abstract

The invention discloses a stripping extraction cyclotron single-circle beam extraction device which comprises two stripping target devices which are arranged on the radius of a cyclotron, have a difference of 180 degrees and can move a distance in the radial direction, the heads of the two stripping target devices are respectively provided with a stripping membrane for stripping and leading out aproton beam; a phase selector, arranged in a small-radius low-energy region of the cyclotron, and used for realizing phase selection of the accelerated negative hydrogen ion beam current. The two stripping target devices are arranged on the radius of the cyclotron, have an angle difference of 180 degrees and can move in the radial direction, and the phase selector is arranged in a small-radius low-energy area of the cyclotron and is used for realizing single-circle extraction of accelerator beams. According to the invention, single-circle extraction of one extraction channel is realized underthe condition of bidirectional extraction of beams of the cyclotron in a stripping extraction mode, so that relatively high extraction beam quality is obtained.

Description

technical field [0001] The invention belongs to the technical field of a proton extraction cyclotron that accelerates negative hydrogen to obtain a proton beam by extraction, and specifically relates to a single-turn beam extraction device and method of an extraction cyclotron. Background technique [0002] During the development of the cyclotron, the stripping extraction method is the most important extraction method for accelerating negative hydrogen to obtain a strong current proton beam through the stripping extraction method. The design and operation of the method are simple, the cost is very low, and the biggest advantage is that the extraction efficiency can reach 100%, and multiple extraction channels can be designed at the same time to improve the utilization rate of the accelerator. The basic principle of this method is to set an electron stripping membrane on the extraction radius, and when negative ions or positive ions in a multi-charged state pass through the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H13/00H05H7/00
CPCH05H7/001H05H13/005
Inventor 安世忠冀鲁豫李明张天爵魏素敏
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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