Author: Kuroda, R.
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MOPOW018 Feasibility Study of Photocathode Opearation of Thermionic RF Gun at KU-FEL 754
 
  • H. Zen, T. Kii, K. Masuda, K. Morita, T. Murata, T. Nogi, H. Ohgaki, S. Suphakul, K. Torgasin
    Kyoto University, Kyoto, Japan
  • R. Kuroda
    AIST, Tsukuba, Ibaraki, Japan
  
  Kyoto University Free Electron Laser (KU-FEL) is a mid-infrared FEL driven by a compact linac utilizinig a thermionic RF gun as its electron source*. Recently we succeeded in operating KU-FEL with photocathode operation of the RF gun by using the thermionic cathode (LaB6) as a photocathode. The performance of KU-FEL under the thermionic cathode and photocathode operation will be reported. In addition, some recent application experiment results will also be presented in this presentation.
*H. Zen, et al., Infrared Phys. Techn. 51 (2008) 382. 		 
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOW018  
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TUPOW047 Generation of a Coherent Cherenkov Radiation by using Electron Bunch Tilting 1870
 
  • K. Sakaue
    Waseda University, Waseda Institute for Advanced Study, Tokyo, Japan
  • R. Kuroda, Y. Taira
    AIST, Tsukuba, Japan
  • M. Nishida, M. Washio
    Waseda University, Tokyo, Japan
  • J. Urakawa
    KEK, Ibaraki, Japan
  
  We have been developing a compact accelerator based a laser photocathode rf electron gun at Waseda University. Low emittance and short bunched electron beam can be generated from the gun. Also, the rf transverse deflecting cavity was developed for the bunch length measurement. We performed an experiment for generating a coherent Cherenkov radiation using bunch tilting. The rf transverse deflector can give a tilt for the electron bunch, and the tilt angle was set to the Cherenkov radiating angle which determined by the target refractive index. We successfully demonstrated a coherent Cherenkov radiation and the characterization of the radiation. The principle of coherent Cherenkov radiation generation, the experimental results and future prospective will be presented at the conference.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPOW047  
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