Crossed-undulator configuration for variable polarized THz source

H. Saito, H. Hama, S. Kashiwagi, T. Muto, K. Nanbu, N. Morita, H. Yamada

研究成果: Conference contribution

抄録

A variable polarized THz source employing a crossed-undulator configuration has been developed at Research Center for Electron Photon Science (ELPH), Tohoku University. An initial experiment will be demonstrated shortly using newly constructed compact planar undulators at a femtosecond short-bunch facility, t-ACTS, in ELPH. The undulators have equivalent parameters such as the period length of 8 cm and the number of periods is 7, but the field directions are crossed each other perpendicularly. The resonant frequency of 1.94 THz for the beam energy of 22 MeV. Magnetic field measurements have been already performed. The measured field strength distributions of the two undulators were mostly identical to each other. A beam transport line of variable R56 triple bend lattice intersecting the crossed-undulator configuration has been studied for phase control of interference between two radiations (namely the phase shifter). According to a tentative design of the phase shifter beam line, the degree of circular polarization may exceed 0.9 for the fundamental frequency of 1.94 THz in a narrow cone of angular spread of 2 mrad.

本文言語English
ホスト出版物のタイトルProceedings of the 39th International Free-Electron Laser Conference, FEL 2019
出版社JACoW Publishing
ページ69-72
ページ数4
ISBN(電子版)9783954502103
DOI
出版ステータスPublished - 2019
イベント39th International Free-Electron Laser Conference, FEL 2019 - Hamburg, Germany
継続期間: 2019 8月 262019 8月 30

出版物シリーズ

名前Proceedings of the 39th International Free-Electron Laser Conference, FEL 2019

Conference

Conference39th International Free-Electron Laser Conference, FEL 2019
国/地域Germany
CityHamburg
Period19/8/2619/8/30

ASJC Scopus subject areas

  • 電子工学および電気工学

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