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Song, E. H.

Paper Title Page
WEPPH033 Stabilization of a Klystron Voltage at 100 PPM Level for PAL XFEL 424
 
  • S. D. Jang, S. J. Kwon, Y. G. Son, J.-H. Suh, J.-S. Oh
    PAL, Pohang, Kyungbuk
  • E. H. Song
    CNU, Changwon
  
  The PAL XFEL needs a stable electron beam. The stable charging of PFN (pulse forming network) of a klystron-modulator is essential to provide the stable acceleration field for an electron beam. For PAL XFEL, stabilization of klystron voltage pulses at 100 PPM level is required. Short-term stability is determined by a minimum resolution of a charging system. Long-term stability is determined by a thermal stability due to the temperature drift. This paper shows details of hardware R&D and test results to achieve the target stability.