Permanent magnet type quadrupole magnet and assembling method thereof

A quadrupole magnet and permanent magnet technology, applied in accelerators, electrical components, etc., can solve problems such as poor long-term stability, difficult assembly, and reduced beam transmission efficiency, and achieve good stability and high beam transmission efficiency.

Inactive Publication Date: 2020-05-08
TSINGHUA UNIV +1
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] American scholar Halbeck designed a permanent magnet quadrupole magnet structure. In this design, magnetic blocks with different magnetization directions are closely arranged, but there is a strong repulsion between the actual magnetic blocks, which makes it difficult to assemble.
In order to overcome the difficulty of assembly, a structure supported by

Method used

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  • Permanent magnet type quadrupole magnet and assembling method thereof
  • Permanent magnet type quadrupole magnet and assembling method thereof
  • Permanent magnet type quadrupole magnet and assembling method thereof

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and do not limit the protection scope of the present invention.

[0032] In order to better understand the present invention, an application example of a permanent quadrupole magnet and its assembly method proposed by the present invention will be described in detail below.

[0033] A kind of permanent magnet quadrupole magnet that the present invention proposes, its overall structure is as follows figure 1 As shown, it includes a metal frame 2 with a housing cavity, a plurality of magnetic blocks 1 arranged in a Halbach array in the housing cavity of the metal frame 2, and a plurality of top wires connecting each magnetic block 1 and ...

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Abstract

The invention provides a permanent magnet type quadrupole magnet and an assembling method thereof. The permanent magnet type quadrupole magnet comprises a metal skeleton with a containing cavity, a plurality of magnetic blocks and a plurality of jackscrews, wherein the magnetic blocks and the jackscrews are located in the containing cavity and arranged in a Halbach array mode. The top of each magnetic block is fixed to the inner side of the metal skeleton through the plurality of jackscrews and extrudes towards the center of the metal skeleton, so the side faces of every two adjacent magneticblocks are tightly attached, and the bottoms of the magnetic blocks are sequentially connected end to end to form a circular cavity. The invention further discloses an arrangement mode of the magneticblocks in the metal skeleton so as to improve the rate of finished products. When the permanent magnet type quadrupole magnet is assembled, an auxiliary tool is used, the auxiliary tool is taken outafter the magnetic blocks are fixed in place, then magnetic center measurement is carried out, and mechanical treatment is carried out on the outer circle of the quadrupole magnet skeleton according to the measurement result until the eccentricity of the magnetic center meets the design requirement.

Description

technical field [0001] The invention relates to the technical field of quadrupole magnets in particle accelerators, in particular to a permanent magnet quadrupole magnet and an assembly method thereof. Background technique [0002] The quadrupole magnet is the focusing element of the charged particle beam. The permanent magnet quadrupole magnet has the advantages of compact structure, no need for power supply and water supply, and stable magnetic field, which helps the accelerator to achieve higher acceleration efficiency. In addition to the accelerator, it is also suitable for other applications that require miniaturization and high stability of the magnetic field. beam focusing system. [0003] American scholar Halbeck designed a permanent magnet quadrupole magnet structure. In this design, magnetic blocks with different magnetization directions are closely arranged, but there is a large repulsion between the actual magnetic blocks, which makes it difficult to assemble. ...

Claims

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Application Information

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IPC IPC(8): H05H7/04
CPCH05H7/04H05H2007/043
Inventor 王百川郑曙昕张化一王学武王忠明邱孟通
Owner TSINGHUA UNIV
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