High-frequency electric-focusing high-gradient ion acceleration apparatus

An ion acceleration and high-frequency electric technology, which is applied in the field of nuclear energy, can solve the problems of poor acceleration quality of high-current and high-intensity ion beams, high cost of components, and low acceleration efficiency, and achieves the effects of high beam quality, compact structure and high acceleration efficiency.

Active Publication Date: 2013-10-16
INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

To solve the acceleration of low-energy and high-intensity ion beams, it avoids the problems of low acceleration effi

Method used

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  • High-frequency electric-focusing high-gradient ion acceleration apparatus
  • High-frequency electric-focusing high-gradient ion acceleration apparatus
  • High-frequency electric-focusing high-gradient ion acceleration apparatus

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1: See figure 2 , image 3 , Figure 4 , A high-frequency electric focusing and high-gradient ion acceleration device, including four T-shaped plates 2 perpendicular to each other in the vacuum chamber 1, and 12 drift tubes 3 are fixedly connected to the two through drift tube support rods 6. Between the two T-shaped plates 2; 12 drift tubes 3 and the vacuum chamber tube 1 are on the same centerline; the vertical high-frequency electric quadrupole lens 4 is oppositely arranged between the drift tubes 3 and fixedly connected to two vertical Between the T-shaped plates 2; the horizontal high-frequency electric quadrupole lens 5 is oppositely arranged between the drift tubes 3, and is fixedly connected between the two horizontal T-shaped plates 2. The diameter of the vacuum chamber cylinder 1 is 0.3m, the length is 0.5m, and the thickness of the T-shaped plate is between 30mm, which needs to be determined according to the mechanical strength.

[0033] The vacuum degr...

Example Embodiment

[0041] Example 2: See figure 2 , image 3 , Figure 4 , A high-frequency electric focusing and high-gradient ion acceleration device, the main structure is the same as the first embodiment. The difference is that the diameter of the vacuum chamber cylinder 1 is 1.5m, the length is 6m, and the thickness of the T-shaped plate is between 100mm.

[0042] The vacuum degree of the vacuum chamber cylinder 1 is 10 -4 -10 -7 Pa.

[0043] see Figure 5 The vertical high-frequency electric quadrupole lens 4 is a saddle-shaped convex in the middle, and the minimum aperture between the two protrusions is 4cm. The length of the vertical high-frequency electric quadrupole lens is 20cm-30cm, and the length increases with The ion velocity increases and increases.

[0044] see Image 6 , The horizontal high-frequency electric quadrupole lens 5 is a concave saddle shape, the maximum aperture between the two concaves is 6cm, the length of the horizontal high-frequency electric quadrupole lens is 20cm...

Example Embodiment

[0048] Example 3: See figure 2 , image 3 , Figure 4 , A high-frequency electric focusing and high-gradient ion acceleration device, the main structure is the same as the first embodiment. The difference is that the diameter of the vacuum chamber cylinder 1 is 1m, the length is 3m, and the thickness of the T-shaped plate is between 60mm, which needs to be determined according to the mechanical strength.

[0049] The vacuum degree of the vacuum chamber cylinder 1 is 10 -4 -10 -7 Pa.

[0050] see Figure 5 The vertical high-frequency electric quadrupole lens 4 is a saddle-shaped convex in the middle, and the minimum aperture between the two protrusions is 3cm. The length of the vertical high-frequency electric quadrupole lens is 5-15cm, and the length increases with The ion velocity increases and increases.

[0051] see Image 6 , The horizontal high-frequency electric quadrupole lens 5 is a concave saddle shape, the maximum aperture between the two concaves is 3cm, the length of t...

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Abstract

The invention relates to an ion acceleration apparatus and belongs to the nuclear energy technology field. A high-frequency electric-focusing high-gradient ion acceleration apparatus is mainly characterized in that the high-gradient ion acceleration apparatus comprises four mutually-vertical T-shaped plates arranged in a vacuum cavity cylinder, a plurality of drift tubes are fixedly connected between the two T-shaped plates respectively by drift-tube support bars, the plurality of drift tubes and the vacuum cavity cylinder are on a same central line, vertical high-frequency electric quadrupole lenses are oppositely mounted between the drift tubes and are fixedly connected between the vertical T-shaped plates, and horizontal high-frequency electric quadrupole lenses are oppositely mounted between the drift tubes and are fixedly connected with the two horizontal T-shaped plates. The advantages of the apparatus provided by the invention in acceleration of high-intensity ion beams, a structure is compact, so that beam quality is excellent; an acceleration function and a transverse and longitudinal focusing function are combined in the same high frequency structure, cavity shunt impedance is high and high-frequency power consumption is greatly reduced; and zero phase is utilized to accelerate, acceleration efficiency is relatively high, length of the cavity can be effectively reduced and effective acceleration gradient is raised. The ion acceleration apparatus provided by the invention is mainly used for acceleration of high-intensity low-energy ion beams and can be used for application-type acceleration apparatuses such as injectors of high-intensity accelerators, industrial accelerators and treatment apparatus injectors.

Description

technical field [0001] The invention relates to an ion accelerator and belongs to the technical field of nuclear energy. Background technique [0002] The drift tube accelerator was developed in the 1920s and 1930s, and it is a commonly used accelerating structure in particle accelerators. The main acceleration principle is that the charged particles pass through the acceleration gap and feel the accelerating electric field; after half a high-frequency cycle, the electric field becomes a negative electric field, and the particles enter the drift tube at this time, so they will not feel the negative electric field and be decelerated; When entering the next acceleration gap after the second half of the high-frequency cycle, the electric field in the acceleration gap becomes a positive electric field, so that the charged particles are accelerated in the whole structure. [0003] In the drift tube acceleration structure, due to the space charge effect and high-frequency defocus...

Claims

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Application Information

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IPC IPC(8): H05H9/00H05H7/22
Inventor 王志军何源袁辰彰
Owner INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
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