800kV/30mA电子辐照倍压加速器研制  

Development of 800kV/30mA Cockcroft-Walton Electron Accelerator for Radiation Application

作　　者：刘永好[1] 李民熙[1] 张金玲[1] 郭洪雷[1] 王胜利[1] 苏海军[1] 施卫国[1] 杨永金[1] 何子锋[1] 张宇田[1] 李德明[1] 

机构地区：[1]中国科学院上海应用物理研究所,上海201800

出　　处：《原子能科学技术》2015年第B10期578-582,共5页Atomic Energy Science and Technology

摘　　要：本文介绍了一台由工频驱动并采用气体绝缘变压器的对称Cockcroft-Walton型800kV/30mA高压电子加速器的研制和调试。气体绝缘变压器和倍加回路均置于SF6压力钢筒内,相对于一般采用的油变,简化了馈电,缩减了整个设备的体积;采用工频供电,无需专门的前级驱动电源;电子枪供电通过专设的一组隔离变压器实现。经调试和改进,该加速器空载电压可达860kV以上,700kV下已完成大于30mA的稳定出束,能量转换效率可达90%。该加速器有望成为1 MV以下的辐照实用机型。The development of an 800 kV/30 mA DC electron accelerator based on a symmetrical Cockcroft-Walton cascade circuit driven by line frequency with two gas insulated step-up transformers was introduced. In such an arrangement, the transform- ers, instead of oil insulated ones, can be directly housed in the same SF6 pressure vessel as the cascade circuit, feedthrough as simple as which yields an accelerator possible. Four special-design footprint as small and electric isolation transformers were con- nected in series between the ground and HV to power the electron gun. In the tests after improvements, the machine can be conditioned to 860 kV with non-load, 700 kV/ 30 mA stable operations have been demonstrated several times, and an electrical effi- ciency of around 90% appears very promising for it to be developed as a good alternative for industrial electron accelerators below 1 MV.

关 键 词：电子加速器 倍压加速器 气体绝缘变压器 工频 

分 类 号：TL51[核科学技术—核技术及应用]