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RIS citation export for TUPRB039: Research of Coherent Edge Radiation Generated by Electron Beams Oscillating Free-Electron Lasers

AU  - Sei, N.
AU  - Hayakawa, K.
AU  - Hayakawa, Y.
AU  - Nogami, K.
AU  - Ogawa, H.
AU  - Ohgaki, H.
AU  - Sakai, T.
AU  - Sumitomo, Y.
AU  - Takahashi, Y.
AU  - Tanaka, T.
AU  - Zen, H.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Research of Coherent Edge Radiation Generated by Electron Beams Oscillating Free-Electron Lasers
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - We have studied far-infrared coherent radiation with an S-band linac at Laboratory for Electron Beam Research and Application (LEBRA) at Nihon University. We have already developed a couple of terahertz-wave sources based on coherent synchrotron radiation and coherent transition radiation*, which have been applied to spectroscopic research**. Moreover, we developed coherent edge radiation (CER) at the downstream bending magnets in the FEL sections. Because the edge radiation has an annular shape distribution characterized by the asymmetric first-order Laguerre-Gaussian mode, the CER can be extracted from an optical cavity of the FEL system without a diffraction loss of the FEL beam***. The root-mean-squared bunch length of the electron beam was evaulated by measuring the CER spectra, which was about the same level as the FEL micropulse width. Although the infrared FELs at LEBRA had a long slippage length, the CER intensity can be a guidepost enhancing the FEL power because of the existence of their correlation. In this presentation, the characteristics of the CER including correlation between the CER and the FEL will be reported.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 1772
EP  - 1774
KW  - electron
KW  - radiation
KW  - cavity
KW  - experiment
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-TUPRB039
UR  - http://jacow.org/ipac2019/papers/tuprb039.pdf
ER  -