| Paper |
Title |
Page |
| MOPPH061 |
Design of the PAL Test FEL Machine
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149 |
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- J. Choi, J. Y. Huang, H.-S. Kang, I. S. Ko, T.-Y. Lee, J.-S. Oh, S. J. Park, M. Kim
PAL, Pohang, Kyungbuk
- C. M. Yim
POSTECH, Pohang, Kyungbuk
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In a road to the PAL-XFEL, the 1st stage will be to build a test machine, whose design parameters are presented here. It will be a 230 MeV machine that has the target wavelength of visible range. The design details and simulation results are shown in this paper.
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| WEPPH033 |
Stabilization of a Klystron Voltage at 100 PPM Level for PAL XFEL
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424 |
| |
- S. D. Jang, S. J. Kwon, Y. G. Son, J.-H. Suh, J.-S. Oh
PAL, Pohang, Kyungbuk
- E. H. Song
CNU, Changwon
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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.
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