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Strong-focusing straight-sided sector magnet of medium-energy rotary accelerator

A cyclotron, strongly focused technology

Inactive Publication Date: 2010-04-21
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to aim at the defect of the helical sector magnet in the existing cyclotron, to provide a kind of strong focusing straight-side sector magnet for the medium energy cyclotron, while improving the focusing force, make the construction and installation of the cyclotron more convenient Simple

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Embodiment Construction

[0012] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0013] The medium-energy cyclotron is a compact cyclotron, and its magnet structure consists of two symmetrical upper and lower parts, including four upper and lower magnetic poles, four magnetic yokes and upper and lower cover plates. Here, the lower half of the magnet is taken as an example to describe its structure. Such as figure 1 As shown, the bottom of the magnet is a circular cover plate 1, and the middle part of the cover plate 1 is uniformly provided with four magnetic poles 2, and the four magnetic poles 2 are symmetrically distributed on the cover plate 1, and the number of magnetic poles is not limited to It is limited to four, and multiple magnetic poles can be evenly arranged on the cover plate according to the actual situation. The magnetic poles have a straight-sided fan-shaped structure, that is, the edges on both sides of the magn...

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Abstract

The invention relates to a magnet structure of a rotary accelerator, in particular to a strong-focusing straight-sided sector magnet of a medium-energy rotary accelerator. The magnet consists of two parts symmetrical up and down, wherein each part comprises a circular cover plate; a plurality of magnetic poles are uniformly arranged in the middle of the cover plate; the magnetic poles have a straight-sided sector structure; a sector valley area is formed between two neighboring magnetic poles; and magnetic yokes are arranged on the periphery of the cover plate at positions just opposite to the outer side of each magnetic pole. By adopting the magnet structure with straight-sided sector magnetic poles and deep valley areas, the strong-focusing straight-sided sector magnet of the invention realizes the strong focusing force and also reduces the processing and assembling difficulties of a main magnet and other related elements of the rotary accelerator.

Description

technical field [0001] The invention relates to a magnet structure of a cyclotron, in particular to a strong focusing straight-side sector magnet for a medium-energy cyclotron. Background technique [0002] A cyclotron is a device that uses a magnetic field to make charged particles perform cyclotron motion, and is repeatedly accelerated by a high-frequency electric field during the motion. Its basic structure includes a magnet system, an ion source, an injection system, and an extraction system. Among them, the magnet system includes a magnet and an adjustment coil, so that the cyclotron can obtain an isochronous magnetic field. [0003] The important indicators of cyclotron magnets are to provide isochronous magnetic field for beam movement and provide strong focusing force. In order to obtain an isochronous magnetic field, at present, in the magnet design of medium-energy cyclotrons, the commonly used scheme is that the width of the magnetic pole angle increases with the...

Claims

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Application Information

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IPC IPC(8): H05H7/04H05H13/00H01F7/00
Inventor 张天爵钟俊晴管峰平吕银龙杨建俊安世忠姚红娟魏素敏
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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