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RIS citation export for MOPO076: Study on Generation of Variable Polarized Coherent THz Radiation Using a Crossed Undulator

AU  - Saito, H.
AU  - Hama, H.
AU  - Hinode, F.
AU  - Kanomata, K.
AU  - Kashiwagi, S.
AU  - Miura, S.
AU  - Muto, T.
AU  - Nagasawa, I.
AU  - Nanbu, K.
AU  - Ninomiya, S.
AU  - Takahashi, K.
ED  - Schaa, Volker RW
ED  - Pei, Guoxi
ED  - Chin, Yong Ho
ED  - Fu, Shinian
ED  - Zhao, Ning
TI  - Study on Generation of Variable Polarized Coherent THz Radiation Using a Crossed Undulator
J2  - Proc. of LINAC2018, Beijing, China, 16-21 September 2018
CY  - Beijing, China
T2  - Linear Accelerator Conference
T3  - 29
LA  - english
AB  - A variable polarized THz radiation source using a crossed undulator system has been developed at Tohoku University. In this scheme, two coherent undulator radiations from an extremely short electron bunch are used to control the polarization. They are linearly polarized radiations orthogonal to each other. Polarization of superimposed radiation is controlled by adjusting a relative phase between them. A compact planar undulator with seven periods has been designed for an experiment at our facility. The radiation frequency is 2.06 THz for electron beam energy of 22 MeV. The opening angle of the crossed undulator radiation was estimated to be 34 mrad (FWHM). Since the polarization state of the crossed undulator depends on observation angle, its angular dependence was evaluated. It was found that ideal polarization control is realized only in the angle range of 2.5 mrad, which is quite smaller than that of the radiation itself.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 157
EP  - 159
KW  - undulator
KW  - radiation
KW  - polarization
KW  - electron
KW  - controls
DA  - 2019/01
PY  - 2019
SN  - 2226-0366
SN  - 978-3-95450-194-6
DO  - DOI: 10.18429/JACoW-LINAC2018-MOPO076
UR  - http://jacow.org/linac2018/papers/mopo076.pdf
ER  -