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1. 发明授权

US5576679A Cylindrical permanent magnet unit suitable for gyrotron 失效
标题翻译：适用于旋转管的圆柱形永久磁铁单元
公开(公告)号：US5576679A
公开(公告)日：1996-11-19
申请号：US547343
申请日：1995-10-24
申请人： Ken Ohashi , Takeo Takada , Toshiyuki Kikunaga
发明人： Ken Ohashi , Takeo Takada , Toshiyuki Kikunaga
IPC分类号： H01J23/10 , H01F7/02
CPC分类号： H01J23/10 , H01J2225/025
摘要： The invention provides a cylindrical permanent magnet unit suitable for application to gyrotrons. Essentially the magnet unit consists of two cylindrical permanent magnets which are coaxially aligned, and there is a space between the two cylindrical magnets. Each of the two cylindrical magnet is a coaxially juxtaposed assembly of a plurality of ring-like permanent magnets, and each ring-like magnet is constructed of a plurality of permanent magnet segments. In one of the two cylindrical magnets every ring-like permanent magnet is magnetized in radial directions from the inside toward the outside, and in the other every ring-like permanent magnet is magnetized in radial directions from the outside toward the inside. In the bore of the cylindrical magnet unit the magnetic field is in the direction of the longitudinal center axis of the bore. By virtue of the space between the two cylindrical magnets, the distribution of flux density in the direction of the center axis becomes flat in a middle section of the bore. A ring-like member of a nonmagnetic material may be inserted in the aforementioned space.
摘要翻译：本发明提供一种适用于旋转陀螺仪的圆柱形永久磁铁单元。本质上，磁体单元由同轴对准的两个圆柱形永磁体组成，并且在两个圆柱形磁体之间存在空间。两个圆柱形磁体中的每一个是多个环形永磁体的同轴并置的组件，并且每个环形磁体由多个永磁体段构成。在两个圆柱形磁体之一中，每个环形永久磁铁从内向外被径向磁化，而另一个环形永久磁铁从外侧到内侧沿径向方向磁化。在圆柱形磁体单元的孔中，磁场在孔的纵向中心轴线的方向上。由于两个圆柱形磁体之间的空间，在孔的中间部分中的磁心密度在中心轴线方向上的分布变得平坦。可以在上述空间中插入非磁性材料的环状构件。

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