Evaluation of Bunch Length by Measuring Coherent Synchrotron Radiation with a Narrow-Band Detector at LEBRA
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...
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doaj-095686a782d345bfa3317a0ee92b6cc02020-11-25T02:11:39ZengMDPI AGCondensed Matter2410-38962020-05-015343410.3390/condmat5020034Evaluation of Bunch Length by Measuring Coherent Synchrotron Radiation with a Narrow-Band Detector at LEBRATakeshi Sakai0Ken Hayakawa1Toshinari Tanaka2Yasushi Hayakawa3Kyoko Nogami4Norihiro Sei5Laboratory for Electron Beam Research and Application, Nihon University, 7-24-1 Narashinodai, Funabashi 274-8501, JapanLaboratory for Electron Beam Research and Application, Nihon University, 7-24-1 Narashinodai, Funabashi 274-8501, JapanLaboratory for Electron Beam Research and Application, Nihon University, 7-24-1 Narashinodai, Funabashi 274-8501, JapanLaboratory for Electron Beam Research and Application, Nihon University, 7-24-1 Narashinodai, Funabashi 274-8501, JapanLaboratory for Electron Beam Research and Application, Nihon University, 7-24-1 Narashinodai, Funabashi 274-8501, JapanResearch Institute of Instrumentation Frontier, National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, JapanThis 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.https://www.mdpi.com/2410-3896/5/2/34coherent synchrotron radiationbunch lengthFELlinacterahertz |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Takeshi Sakai Ken Hayakawa Toshinari Tanaka Yasushi Hayakawa Kyoko Nogami Norihiro Sei |
spellingShingle |
Takeshi Sakai Ken Hayakawa Toshinari Tanaka Yasushi Hayakawa Kyoko Nogami Norihiro Sei Evaluation of Bunch Length by Measuring Coherent Synchrotron Radiation with a Narrow-Band Detector at LEBRA Condensed Matter coherent synchrotron radiation bunch length FEL linac terahertz |
author_facet |
Takeshi Sakai Ken Hayakawa Toshinari Tanaka Yasushi Hayakawa Kyoko Nogami Norihiro Sei |
author_sort |
Takeshi Sakai |
title |
Evaluation of Bunch Length by Measuring Coherent Synchrotron Radiation with a Narrow-Band Detector at LEBRA |
title_short |
Evaluation of Bunch Length by Measuring Coherent Synchrotron Radiation with a Narrow-Band Detector at LEBRA |
title_full |
Evaluation of Bunch Length by Measuring Coherent Synchrotron Radiation with a Narrow-Band Detector at LEBRA |
title_fullStr |
Evaluation of Bunch Length by Measuring Coherent Synchrotron Radiation with a Narrow-Band Detector at LEBRA |
title_full_unstemmed |
Evaluation of Bunch Length by Measuring Coherent Synchrotron Radiation with a Narrow-Band Detector at LEBRA |
title_sort |
evaluation of bunch length by measuring coherent synchrotron radiation with a narrow-band detector at lebra |
publisher |
MDPI AG |
series |
Condensed Matter |
issn |
2410-3896 |
publishDate |
2020-05-01 |
description |
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. |
topic |
coherent synchrotron radiation bunch length FEL linac terahertz |
url |
https://www.mdpi.com/2410-3896/5/2/34 |
work_keys_str_mv |
AT takeshisakai evaluationofbunchlengthbymeasuringcoherentsynchrotronradiationwithanarrowbanddetectoratlebra AT kenhayakawa evaluationofbunchlengthbymeasuringcoherentsynchrotronradiationwithanarrowbanddetectoratlebra AT toshinaritanaka evaluationofbunchlengthbymeasuringcoherentsynchrotronradiationwithanarrowbanddetectoratlebra AT yasushihayakawa evaluationofbunchlengthbymeasuringcoherentsynchrotronradiationwithanarrowbanddetectoratlebra AT kyokonogami evaluationofbunchlengthbymeasuringcoherentsynchrotronradiationwithanarrowbanddetectoratlebra AT norihirosei evaluationofbunchlengthbymeasuringcoherentsynchrotronradiationwithanarrowbanddetectoratlebra |
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