| Paper |
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Other Keywords |
Page |
| WEPPH003 |
Magnetic Measurements of the FLASH Infrared Undulator
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undulator, simulation, radiation, electron |
318 |
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- A. Chesnov, E. A. Matushevsky, D. Petrov, E. Syresin, N. A. Morozov
JINR, Dubna, Moscow Region
- O. Grimm, Y. Holler
DESY, Hamburg
- J. Rossbach
Uni HH, Hamburg
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The FLASH free-electron laser at DESY, Hamburg, will be equipped with an infrared electromagnetic undulator during the current shut-down, providing radiation in the range 1-200 um. It will be used both for electron beam diagnostics purposes and as a powerful source synchronized to the VUV and soft X-ray pulses of the FEL. The undulator was constructed at the Joint Institute of Nuclear Research (JINR). This paper summarizes the extensive magnetic measurements that where performed both at JINR and DESY prior to installation of the undulator.
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| WEPPH033 |
Stabilization of a Klystron Voltage at 100 PPM Level for PAL XFEL
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controls, feedback, target, klystron |
424 |
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- 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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