Effect of a transition section between the Blumlein line and a load on the output voltage of gigawatt intense electron-beam accelerators
Effect of a transition section between the Blumlein line and a load on the output voltage of gigawatt intense electron-beam accelerators
复制标题
DOI：
10.1103/physrevstab.12.110401
复制
发表时间：
2009-11
影响因子：
--
通讯作者：
Xin-bing Cheng;Jinliang Liu;Yu Zhang;Jia-huai Feng;B. Qian
中科院分区：
文献类型：
--
作者：
Xin-bing Cheng;Jinliang Liu;Yu Zhang;Jia-huai Feng;B. Qian
强流电子束加速器(IEBA)负载主脉冲平电压是影响IEBA输出束流质量和特性的重要因素之一。本文从理论上分析了Blumlein脉冲形成线(BPFL)与负载之间的过渡段对IEBA输出电压的影响。基于BPFL的电报方程，得到了IEBA输出电压的计算公式，并分析了影响输出电压的因素。理论分析发现，过渡段的波阻抗和传输时间对负载下主脉冲电压波形的波动有很大影响。为了在加载时获得形状良好的方波，并改善这种加速器的电子束质量，必须在过渡段设置合适的波阻抗，并设计出尽可能短的过渡段传输时间。最后在IEBA上进行了实验，实验结果与理论分析吻合较好。
The flat voltage of the main pulse on the load of intense electron-beam accelerators (IEBA) is one of the important factors which affect the quality and characteristic of the output beam current of IEBA. In this paper, the effect of the transition section between the Blumlein pulse forming line (BPFL) and load on the output voltage of IEBA is analyzed in theory. Based on the telegraph equations of the BPFL, a formula which is used to calculate the output voltage of IEBA is obtained, and the factor which affects the output voltage is analyzed. It is found from the theoretical analysis that the wave impedance and transmission time of the transition section influence considerably the fluctuation of the main pulse voltage waveform at the load. In order to get a well-shaped square waveform at load and to improve the electron-beam quality of such an accelerator, there should be a proper wave impedance of the transition section, and the transmission time of the transition section should be designed as short as possible. At last, some experiments are performed on IEBA, and the experimental results show reasonable agreement with theoretical analysis.