公开(公告)号：US4644168A

公开(公告)日：1987-02-17

申请号：US610102

申请日：1984-05-14

Applicant: Roy E. Rand ,  Dan Y. Wang

Inventor： Roy E. Rand ,  Dan Y. Wang

IPC: A61B6/03 ,  H01J35/00 ,  H01J35/14 ,  H01J3/34

CPC classification number: A61B6/032 ,  A61B6/4028 ,  H01J35/00 ,  H01J35/14

Abstract: A deflecting magnet assembly for scanning an incident beam of charged particles in a scanning electron beam computed tomography scanner. The configuration (including angular orientation and coil end connection geometry) of the coils which comprise the magnet is selected to approximate the field of a pure dipole. In addition, a magnetic shield is used which equalizes the effective radii of the constituent coils and thereby simplifies construction of the assembly.

Abstract translation: 用于在扫描电子束计算机断层摄影扫描仪中扫描带电粒子的入射束的偏转磁体组件。 选择包括磁体的线圈的构造（包括角度定向和线圈端连接几何形状）以接近纯偶极子的场。 另外，使用均衡构成线圈的有效半径的磁屏蔽，从而简化了组件的结构。