Study On the Pulse Power Supply using Inverter Power Supply for XFEL

XFEL용 인버터 고전압 전원공급장치를 이용한 펄스전원공급장치 연구

  • Park, S.S. (POSTECH Pohang Accelerator Laboratory) ;
  • Kim, S.H. (POSTECH Pohang Accelerator Laboratory) ;
  • Kim, S.C. (POSTECH Pohang Accelerator Laboratory) ;
  • Han, Y.J. (POSTECH Pohang Accelerator Laboratory) ;
  • Hwang, J.Y. (POSTECH Pohang Accelerator Laboratory) ;
  • Kim, H.G. (Kyungbook National University)
  • Published : 2005.07.04

Abstract

The 2.5 GeV linac of the Pohang Light Source(PLS) is planed to be converted to a XFEL. The PAL XFEL requires a new 1.2-GeV linac that will be combined to the existing linac to increase a beam energy upto 3.7 GeV. The RF stability of 0.02 % is required for both RF phase and amplitude to get the XFEL output. This stability is mainly determined by a low level RF drive system and klystron-modulators. The stability level of the modulator has to be improved 10 times better to meet the pulse stability of 0.02 %. The regulation methods such as traditional de-Qing and precision inverter charging technology are reviewed to find out suitable upgrade scheme of the modulators.

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