摘要
为了提高DG型电子加速器束流扫描均匀度、解决束流中心偏移、提升束流引出效率,开发了一种既可实现X,Y两相互垂直方向均匀扫描又可以实现束流中心自动对中调节的扫描系统。介绍了扫描磁铁及其电源参数的选取依据,阐述了将扫描磁铁和束流校正线圈进行整体式设计的扫描系统扫描电流成形方式及自动对中电路信号调制过程,包括为提高加速器运行安全性而设计的连锁保护信号。产业化现场使用事实已证明,该系统设计完全达到了设计要求,具有优良的扫描均匀度和长时间工作稳定可靠性。
To improve the scanning uniformity and beam extraction efficiency, and to solve the problem of beam central de- viation of DG--type electron accelerators, a scanning system has been developed, whose scanning coil and self-correcting coil are set in the same magnetic core. The system can scan along the X and Y axes and adjust the beam to the centre of the extraction win- dow automatically. This paper introduces the parameter-selection basis of scanning magnet and scanning power-supply. We ex- pound the design principle of the shaping circuit of the triangle wave current based square wave voltage. Moreover, the interlock signal from the scanning system is used to ensure the accelerator＇s operation safety and stabilization. It is proved that the scanning system completely achieves the industrialization demand and the scanning uniformity meets the industrial irradiation requirements by the fact that the accelerator with the steady self-correcting scanning system is successfully used in practice.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2013年第2期481-484,共4页
High Power Laser and Particle Beams
基金
西部之光博士项目(Y015020XBB)
关键词
电子加速器
扫描电源
扫描磁铁
自校正
扫描均匀度
electron accelerator
scanning power-supply
scanning magnet
self-correcting
scanning uniformity
