基于相干渡越辐射的束团长度测量研究
电子束团长度是束流诊断中的重要参数,基于相干渡越辐射(Coherent TransitionRadiation,CTR)的测量方法是一种简单易行的高时间分辨率测量方法。本文调研并分析了不同电子束团长度测量方法的优缺点,选择基于CTR方法作为主要研究方向,主要针对上海深紫外自由电子激光实验装置(Shanghai Deep Ultra-Violet Free Electron Laser,SDUV-FEL)和X射线自由电子激光试验装置(Shanghai X-ray Free Electron Lase LSXFEL)进行了实验方案设计和模拟分析。结果表明,通过合理的参数选择和方案优化,用该方法可对...
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Published in | 核技术 Vol. 40; no. 1; pp. 6 - 11 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
中国科学院大学 北京 100049%中国科学院上海应用物理研究所 嘉定园区 上海201800
2017
中国科学院上海应用物理研究所 嘉定园区 上海201800 |
Subjects | |
Online Access | Get full text |
ISSN | 0253-3219 |
DOI | 10.11889/j.0253-3219.2017.hjs.40.010102 |
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Summary: | 电子束团长度是束流诊断中的重要参数,基于相干渡越辐射(Coherent TransitionRadiation,CTR)的测量方法是一种简单易行的高时间分辨率测量方法。本文调研并分析了不同电子束团长度测量方法的优缺点,选择基于CTR方法作为主要研究方向,主要针对上海深紫外自由电子激光实验装置(Shanghai Deep Ultra-Violet Free Electron Laser,SDUV-FEL)和X射线自由电子激光试验装置(Shanghai X-ray Free Electron Lase LSXFEL)进行了实验方案设计和模拟分析。结果表明,通过合理的参数选择和方案优化,用该方法可对飞秒至皮秒范围内的束团长度进行测量,时间分辨率能到达飞秒量级,满足SDUV-FEL的实验需求和SXFEL的工程需求。 |
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Bibliography: | BIAN Yu1,2, ZHANG Wenyan1, LIU Bo1, WANG Dong1 (1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Jiading Campus, Shanghai 201800, China;2University of Chinese Academy of Sciences, Beijing 100049, China) 31-1342/TL Background: Longitudinal electron bunch length is an important parameter in accelerator beam diagnostics. It plays a significant role in single-pass free electron lasers, since the high-gain Free Electron Laser (FEL) process depends strongly on a high peak current of the electron bunches. Purpose: It is necessary to measure the electron bunch lengths in both Shanghai Deep Ultra-Violet Free Electron Laser (SDUV-FEL) and Shanghai X-ray Free Electron Laser (SXFEL). Methods: In this paper, the advantages and disadvantages of three standard diagnostic tools for bunch length measurement are compared and a measuring system based on coherent transition radiation (CTR) for SDUV-FEL and SXFEL is designed and analyzed. Results: The simulation shows that the measuring system can measure the el |
ISSN: | 0253-3219 |
DOI: | 10.11889/j.0253-3219.2017.hjs.40.010102 |