Evaluation of Bunch Length by Measuring Coherent Synchrotron Radiation with a Narrow-Band Detector at LEBRA

被引：3
|
作者：
Sakai, Takeshi [1 ]
Hayakawa, Ken [1 ]
Tanaka, Toshinari [1 ]
Hayakawa, Yasushi [1 ]
Nogami, Kyoko [1 ]
Sei, Norihiro [2 ]
机构：
[1] Nihon Univ, Lab Electron Beam Res & Applicat, 7-24-1 Narashinodai, Funabashi, Chiba 2748501, Japan
[2] Natl Inst Adv Ind Sci & Technol, Res Inst Instrumentat Frontier, 1-1-1 Umezono, Tsukuba, Ibaraki 3058568, Japan
来源：
CONDENSED MATTER | 2020年 / 5卷 / 02期
关键词：
coherent synchrotron radiation; bunch length; FEL; linac; terahertz; LIGHT; BEAM; FEL; WAVELENGTH; UNIVERSITY;
D O I：
10.3390/condmat5020034
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
This study presents a novel technology to measure electron bunch length with a high time resolution by measuring coherent synchrotron radiation using a narrow-band detector at Laboratory for Electron Beam Research and Application (LEBRA)-an S-band linear accelerator facility for free-electron lasers. The form factor was observed to decrease exponentially with charge-in concordance with the relationship between the intensity of the coherent synchrotron radiation and the magnitude of electron bunch charge-in the region in which the effect of electron bunch charge on bunch length is negligible. The calculated root-mean-square bunch length was observed to agree well with the value determined from the spectral shape obtained. The aforementioned results are expected to be useful in real-time observation of small changes in electron bunches in advanced accelerators.
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页数：10
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