Microwave pulse compressors based on a single resonant cavity operating at polarized modes can be super compact, and corrugated structures can transmit high-power, high-frequency microwave with very low loss. We present an $X$ -band (11.424 GHz) pulse compressor using a corrugated cavity with quarter-wavelength depth corrugations working at polarized HE 1-1-14 modes. The cavity has a high-quality factor ( $Q_{0}$ ) of 116 000 with an inner diameter of less than 7 cm and a length of less than 20 cm, which is more compact compared with smooth spherical and cylindrical cavities for equivalent quality factors. The klystron power can be compressed to a peak power of 150 MW in order to feed two high-gradient accelerating structures designed for the Tsinghua Thomson-scattering X-ray Source (TTX). Theory, design, measurements, and the high-power demonstration of the corrugated pulse compressor are presented in detail. Limitations such as breakdowns and temperature rise of using the corrugated structure as a storage element are also further analyzed.

中文翻译：

---

紧凑型 X波纹圆柱腔的超宽带微波脉冲压缩机

基于在极化模式下运行的单个谐振腔的微波脉冲压缩机可以非常紧凑，并且波纹结构可以以非常低的损耗传输高功率，高频微波。我们提出一个 $ X $ 频段（11.424 GHz）的脉冲压缩器，其波纹腔具有四分之一波长的深度波纹，并在极化HE 1-1-14模式下工作。腔体具有高品质因数（ $ Q_ {0} $ ）的内径小于7厘米，长度小于20厘米，为11.6万，与同等品质因数的光滑球形和圆柱形腔体相比，它更加紧凑。速调管功率可以压缩到150 MW的峰值功率，以馈送为清华汤姆森散射X射线源（TTX）设计的两个高梯度加速结构。详细介绍了波纹脉冲压缩机的理论，设计，测量和大功率演示。还进一步分析了将波纹结构用作存储元件的局限性，例如击穿和温度升高。