Designed a photomultiplier tube X-ray framing camera based on pulse dilation technology

Wenyong Fu, Chenman Hu, Ling Li, Rongyan Zhou, Ping Chen
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Abstract

During the past decade, many diagnostic instruments have been developed that utilize electronic pulse dilation to achieve temporal resolution in the sub-10 ps range. The motivation behind these development efforts was the need for advanced diagnostics in high-density physics experiments around the world. This technology converts the signal of interest into a free electron cloud, which is accelerated into a vacuum drift space. The acceleration potential varies over time and causes axial velocity dispersion in the electron cloud. This velocity dispersion is converted into time separation after electrons pass through drift space. Then, traditional time resolved methods were used to detect free electrons, and the effective temporal resolution was magnified many times. A gated microchannel plate (MCP) X-ray framing camera based on pulse-dilation technology has been designed and manufactured in the paper. Here, we discuss design details and applications of these instruments. The temporal resolution measured without using broadening technology is approximately 78 ps. When the excitation pulse is applied to the PC, the pulse dilation technique is used to increase the measured temporal resolution to 9 ps. The propagation speed of gated pulses in MCP microstrip lines was measured using fiber bundle method, which is approximately 1.8 × 108 m/s.
设计出基于脉冲扩张技术的光电倍增管 X 射线取景照相机
在过去的十年中,已经开发出许多诊断仪器,它们利用电子脉冲扩张来实现低于 10 ps 范围的时间分辨率。这些开发工作背后的动机是全球高密度物理实验对先进诊断技术的需求。这项技术将感兴趣的信号转换成自由电子云,并将其加速到真空漂移空间。加速势能随时间而变化,并导致电子云的轴向速度分散。电子通过漂移空间后,这种速度分散会转化为时间分离。然后,使用传统的时间分辨方法来检测自由电子,有效的时间分辨率被放大了许多倍。本文设计并制造了一种基于脉冲膨胀技术的门控微通道板(MCP)X 射线取景相机。在此,我们将讨论这些仪器的设计细节和应用。在不使用展宽技术的情况下,测得的时间分辨率约为 78 ps。当激励脉冲作用于个人计算机时,使用脉冲扩张技术可将测得的时间分辨率提高到 9 ps。使用光纤束方法测量了选通脉冲在 MCP 微带线中的传播速度,约为 1.8 × 108 m/s。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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