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Improved Multipole Magnet

一种多极、磁铁的技术，应用在无衔铁的的电磁铁、永久磁铁、磁体等方向，达到低成本的效果

Active Publication Date: 2016-03-02
UK RES & INNOVATION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Any cooling system will incur additional setup and operating costs associated with each multipole magnet, and will also require sufficient space around the multipole magnet in which to operate

Method used

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Examples

Experimental program
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Embodiment Construction

[0051] Although the invention generally relates to multi-pole magnets having any number of poles, it is described below in relation to quadrupole magnets, ie magnets having four poles. However, readers skilled in the art will recognize that the present invention is not limited to quadrupole magnets. Embodiments of the present invention are contemplated for other multi-pole magnets, such as dipoles, hexapoles and octopoles.

[0052] figure 1 A cross-sectional view of a quadrupole magnet 10 according to an embodiment of the present invention is shown. Quadrupole magnet 10 is made up of four quadrants 10a, b, c, d, wherein each quadrant 10a, b, c, d includes ferromagnetic poles 12a, b, c, d and from each pole 12a, b, c, d Extended ferromagnetic flux conducting members in the form of pole roots 13a, b, c, d. figure 1 The cross-sectional view of is taken along the pole plane of the quadrupole magnet 10, which is defined as the plane about which the quadrupole magnet is symmetric...

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PUM

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Abstract

A multipole magnet for deflecting a beam of charged particles comprises: a plurality of ferromagnetic poles arranged in a pole plane; a plurality of permanent magnets each having a magnetization direction and each permanent magnet being arranged to supply a magnetomotive force to the plurality of ferromagnetic poles to generate a magnetic field along the pole plane in a beamline space between the poles; and a plurality of ferromagnetic flux conducting members arranged to guide magnetic flux from at least one of the plurality of permanent magnets ; wherein the multipole magnet comprises an even number of ferromagnetic poles, each pole being arranged diametrically opposite to another of said poles in a pole plane along a pole axis, wherein each of the plurality of permanent magnets is associated with a plurality of poles At least one of the magnets is associated, and the magnetization direction of each permanent magnet is oriented at an angle of at least 45° in the pole plane with respect to the pole axis of the associated pole.

Description

technical field [0001] The present invention relates to improved multipole magnets, and more particularly, though not exclusively, to improved multipole magnets comprising permanent magnets and adapted to deflect, focus or otherwise alter the characteristics of a charged particle beam. Background technique [0002] Multipole magnets consist of multiple magnetic poles and are used, inter alia, to deflect, focus or otherwise alter the characteristics of charged particle beams in particle accelerators. Multipole magnets can be used to change the general direction of the particle beam, to focus or defocus the particle beam, or to correct aberrations in the particle beam. The suitability of a multipole magnet for these tasks is largely determined by the number of poles present. Quadrupole magnets with four poles are, for example, particularly suitable for focusing and defocusing charged particle beams. In modern particle accelerator beamlines, hundreds of multipole magnets can ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05H7/04H01F7/20
CPCH01F7/0226H05H7/04H01F7/0278H01F7/02
Inventor 詹姆士·安东尼·克拉克本杰明·约翰·亚瑟·谢佛德尼尔·马科斯诺伯特·科洛姆
Owner UK RES & INNOVATION LTD
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