论文部分内容阅读
介绍了１４ＭｅＶ医用电子驻波直线加速器上所需用的２７０°双消色散偏转系统的物理设计过程与设计结果。系统的光路设计用ＴＲＡＮＳＰＯＲＴ程序计算，并且应用传输理论推导了双消色散满足的条件，两者结果一致；磁场计算利用ＰＯＩＳＳＯＮ程序完成，验证了磁铁中心磁感强度、好场区范围的场分布满足设计要求。此外，还研究了磁铁尺寸误差及安装误差对束流的影响，为工程设计和系统安装提供了依据。
The physical design process and design results of the 270 ° double dispersion-deflecting deflection system required for 14 MeV medical electron standing wave linear accelerator are introduced. The optical design of the system is calculated by the TRANSPORT program, and the conditions of the double-decouple dispersion are deduced by using the transmission theory. The results of the two are consistent. The calculation of the magnetic field is completed by the POISSON program, which verifies the magnetoresistance of the magnet and the field distribution in a good field satisfies Design requirements. In addition, the influence of magnet size error and installation error on the beam current was studied, which provided the basis for engineering design and system installation.