Author: Cho, B.L.
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THPAK154 Beam Parameter Optimization for UEM Facility with Photo-Emission S-band RF Gun 3610
  • H.R. Lee, P. Buaphad, Y. Joo
    University of Science and Technology of Korea (UST), Daejeon, Republic of Korea
  • S.C. Cha, Y. Kim
    KAERI, Daejon, Republic of Korea
  • B.L. Cho
    KRISS, Daejeon, Republic of Korea
  • H. Suk
    GIST, Gwangju, Republic of Korea
  Ultrafast Electron Microscopy (UEM) can provide snapshot images of a dynamic process in samples with an ultrafast time resolution, which is shorter than picosecond. The Future Accelerator R&D Team at KAERI has been preparing a UEM facility with a photo-emission S-band (= 2856 MHz) RF gun by collaborating with GIST and KRISS. To achieve a higher spatial resolution as well as a higher time resolution, the transverse beam emittance, beam divergence, and energy spread should be smaller, and the bunch length should be shorter. Beam dynamics simulations with ASTRA code is used to optimize those beam parameters in the RF gun. In this paper, we describe ASTRA optimizations of the S-band RF gun to achieve high spatial-temporal resolutions for the UEM facility.  
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