Magnet arrangement, method for manufacturing magnet arrangement and magnetic field homogenization

A technology for arranging structures and magnets, applied in the direction of magnets, magnetic objects, permanent magnets, etc., can solve the problems of unusable volume, unreachable field strength, high consumption, etc., achieve fine resolution/resolution, and simplify the homogenization process.

Active Publication Date: 2021-02-02
BRUKER BIOSPIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is therefore that such a construction and assembly are very complex and expensive
This arrangement may also not be able to reach a field strength of 1.9T because the entire volume cannot be utilized due to the mechanical structure

Method used

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  • Magnet arrangement, method for manufacturing magnet arrangement and magnetic field homogenization
  • Magnet arrangement, method for manufacturing magnet arrangement and magnetic field homogenization
  • Magnet arrangement, method for manufacturing magnet arrangement and magnetic field homogenization

Examples

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Embodiment Construction

[0077] As shown schematically in different embodiments in the representation of the figures, the main use of the magnet arrangement 1 according to the invention is as a component of a magnetic resonance system not specifically shown in the figures, so The magnetic resonance apparatus has a permanent magnet system, and the magnet arrangement is used in (in Figure 1b A uniform magnetic field is generated in the measurement space 0 shown in ) in the direction of the z-axis, the permanent magnet system has at least two, in particular at least three ring-shaped magnet elements 2, which are arranged cylindrically symmetrically with respect to the z-axis and Arranged one above the other and / or concentrically in the z-direction, the ring magnet elements are made of magnetic material, the ring magnet elements 2 consist of individual magnet segments 3 and are arranged such that each individual segment in the corresponding ring The magnetization direction of the magnetization extends su...

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Abstract

The invention relates to a magnet arrangement (1) with a permanent magnet system comprising at least two ring-shaped magnet elements (2) arranged cylindrically symmetrically about the z-axis and stacked on top of each other in the z-direction and / or arranged concentrically, the ring magnet elements are composed of individual magnet segments (3) such that the magnetization directions of the individual segments in the rings extend parallel in the x-y plane perpendicular to the z direction, each The ring magnet elements (2) can be aligned relative to each other in the z-direction and have a Halbach magnetization structure, characterized in that the ring magnet elements are fixedly prefabricated before final assembly in the magnetic resonance system and their respective magnets The segments are immovably fixed to one another, the ring magnet elements are arranged displaceably relative to each other in the x-y plane, and the ring magnet elements are mounted rotatably and / or tiltably relative to each other.

Description

technical field [0001] The invention relates to a magnet arrangement in a magnetic resonance system having a permanent magnet system for generating a homogeneous magnetic field in a measurement space in a direction perpendicular to the z-axis, the permanent magnet system The magnet system comprises at least two, in particular 3, arranged cylindrically symmetrically about the z-axis and arranged one above the other and / or concentrically in the z-direction, said ring-shaped magnet elements being made of magnetic material, said ring-shaped magnet elements being made of a single magnet The segments are formed and arranged such that the magnetization directions of the individual segments in the corresponding ring run substantially parallel in the x-y plane perpendicular to the z direction, the ring magnet elements each have a Halbach magnetization structure, the Halbach The magnetization structure generates a dipolar magnetic field, and each said ring magnet element can be aligned ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/38G01R33/383H01F7/02
CPCG01R33/3802G01R33/383H01F7/0284G01R33/3873G01N24/08G01R33/307H01F7/0278
Inventor V·尼曼R·皮蒂格L·黑尼肯
Owner BRUKER BIOSPIN
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