带束相位补偿的超高时空分辨率光束信号重建

IF 3.6 1区 物理与天体物理 Q1 NUCLEAR SCIENCE & TECHNOLOGY Nuclear Science and Techniques Pub Date : 2024-06-03 DOI:10.1007/s41365-024-01444-y
You-Ming Deng, Yong-Bin Leng, Xing-Yi Xu, Jian Chen, Yi-Mei Zhou
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引用次数: 0

摘要

粒子加速器的加速和束流诊断元件中的束流会激发各种电磁信号。获取这些信号的高时间分辨率时域波形对于研究(如研究束腔相互作用和逐束参数测量)非常重要。因此,本文提出了一种基于等效采样的具有超高时空分辨率和束相补偿的信号重建算法。与传统的等效采样相比,使用相位补偿并将信号束的零交叉点设置为时间基准,可以构建出更精确的重建信号。本文还介绍了该方法的基本原理、仿真和实验对比。基于上海同步辐射设施(SSRF)的波束测试平台和实验验证方法,分析讨论了影响重建信号质量的因素,包括采样数据的深度、模数转换器的量化噪声、波束横向振荡和纵向振荡。光束实验结果表明,在 SSRF 的用户操作条件下,可以重建振幅不确定度为 2% 的光束激励信号。
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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Ultrahigh spatiotemporal resolution beam signal reconstruction with bunch phase compensation

Various electromagnetic signals are excited by the beam in the acceleration and beam-diagnostic elements of a particle accelerator. It is important to obtain time-domain waveforms of these signals with high temporal resolution for research, such as the study of beam–cavity interactions and bunch-by-bunch parameter measurements. Therefore, a signal reconstruction algorithm with ultrahigh spatiotemporal resolution and bunch phase compensation based on equivalent sampling is proposed in this paper. Compared with traditional equivalent sampling, the use of phase compensation and setting the bunch signal zero-crossing point as the time reference can construct a more accurate reconstructed signal. The basic principles of the method, simulation, and experimental comparison are also introduced. Based on the beam test platform of the Shanghai Synchrotron Radiation Facility (SSRF) and the method of experimental verification, the factors that affect the reconstructed signal quality are analyzed and discussed, including the depth of the sampled data, quantization noise of analog-to-digital converter, beam transverse oscillation, and longitudinal oscillation. The results of the beam experiments show that under the user operation conditions of the SSRF, a beam excitation signal with an amplitude uncertainty of 2% can be reconstructed.

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来源期刊
Nuclear Science and Techniques
Nuclear Science and Techniques 物理-核科学技术
CiteScore
5.10
自引率
39.30%
发文量
141
审稿时长
5 months
期刊介绍: Nuclear Science and Techniques (NST) reports scientific findings, technical advances and important results in the fields of nuclear science and techniques. The aim of this periodical is to stimulate cross-fertilization of knowledge among scientists and engineers working in the fields of nuclear research. Scope covers the following subjects: • Synchrotron radiation applications, beamline technology; • Accelerator, ray technology and applications; • Nuclear chemistry, radiochemistry, radiopharmaceuticals, nuclear medicine; • Nuclear electronics and instrumentation; • Nuclear physics and interdisciplinary research; • Nuclear energy science and engineering.
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