Research Theme
Light Source Developments by Using Relativistic Electron Beams
Keywords
Accelerator, Beam Physics, Astrobiology
UVSOR is a synchrotron light source providing low energy synchrotron light ranging from terahertz wave to soft X-rays. Although it was constructed in 1980's, its performance is still in the world top level. This is the result of the continuous effort on improving the machine. Our research group has been developing accelerator technologies toward producing bright and stable synchrotron light, such as high brightness electron beam optics, novel insertion devices or state-of-the-art accelerator technologies.
We have been also developing novel light source technologies toward producing photons with excellent properties, such as free electron laser, coherent synchrotron radiation and laser Compton gamma-rays. We are also investigating beam physics which would be the basis of the novel light source technologies. We have demonstrated producing optical vortex beam and optical vector beam from the synchrotron. We are exploring their applications as novel probes for material sciences and their possible roles in nature.
Radiation from relativistic electrons and its interaction with matters are also interesting as subjects of basic physics, astrophysics, plasma physics, materials science, life science including astrobiology. In cooperation with researchers in a wide range of fields, we are exploring new research areas.
UVSOR-III Electron Storage Ring and Synchrotron Radiation Beam-lines.
The circumference is 53m. The electron energy is 750 MeV. Electrons are circulating in the storage ring at almost the speed of light and radiate intense vacuum ultraviolet light.
Selected Publications
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M. Katoh, M. Fujimoto, H. Kawaguchi, K. Tsuchiya, K. Ohmi, T. Kaneyasu, Y. Taira, M. Hosaka, A. Mochihashi, Y. Takashima, “Angular Momentum of Twisted Radiation from an Electron in Spiral Motion”, Phys. Rev. Lett. 118, 094801 (2017)
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Y. Hikosaka, T. Kaneyasu, M. Fujimoto, H. Iwayama, M. Katoh, “Coherent control in the extreme ultraviolet and attosecond regime by synchrotron radiation”, Nat. Commun. 10 4988 (2019)
