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Title: Ultra Stable Capacitor charging Power Supply of Klystron-Modulator for PAL XFEL

Abstract

The PAL (Pohang Accelerator Laboratory) 2.5-GeV linac is planed to be converted to a SASE-XFEL facility (PAL XFEL) that supplies coherent X-rays down to 0.3-nm wavelength. The electron beams has to have an emittance of 1.0 mm-mrad, a peak current of 3 kA, and a low energy spread of 1.0 MeV. In order to provide reasonably stable SASE output, the RF stability of 0.02% rms is required for both RF phase and amplitude. 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%. This is a technologically challenging issue for PAL XFEL. An inverter technology is to be applied to charge the PFN of a new modulator. Therefore, a new inverter system should provide very stable charging performances. This paper presents the development of an ultra stable klystron-modulator with an inverter power.

Authors:
; ; ; ;  [1]
  1. Pohang Accelerator Laboratory, San-31, Hyoja-Dong, Pohang, Kyungbuk 790-784, S. (Korea, Republic of)
Publication Date:
OSTI Identifier:
21043427
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 879; Journal Issue: 1; Conference: 9. international conference on synchrotron radiation instrumentation, Daegu (Korea, Republic of), 28 May - 2 Jun 2006; Other Information: DOI: 10.1063/1.2436054; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; AMPLITUDES; BEAM EMITTANCE; BEAM PRODUCTION; CAPACITORS; ELECTRON BEAMS; FREE ELECTRON LASERS; GEV RANGE; INVERTERS; KLYSTRONS; LASER RADIATION; LINEAR ACCELERATORS; MEV RANGE; PERFORMANCE; POHANG LIGHT SOURCE; PULSES; STABILITY; WAVELENGTHS; X RADIATION

Citation Formats

Son, Y G, Kwon, S J, Jang, S D, Suh, J H, and Oh, J S. Ultra Stable Capacitor charging Power Supply of Klystron-Modulator for PAL XFEL. United States: N. p., 2007. Web. doi:10.1063/1.2436054.
Son, Y G, Kwon, S J, Jang, S D, Suh, J H, & Oh, J S. Ultra Stable Capacitor charging Power Supply of Klystron-Modulator for PAL XFEL. United States. https://doi.org/10.1063/1.2436054
Son, Y G, Kwon, S J, Jang, S D, Suh, J H, and Oh, J S. 2007. "Ultra Stable Capacitor charging Power Supply of Klystron-Modulator for PAL XFEL". United States. https://doi.org/10.1063/1.2436054.
@article{osti_21043427,
title = {Ultra Stable Capacitor charging Power Supply of Klystron-Modulator for PAL XFEL},
author = {Son, Y G and Kwon, S J and Jang, S D and Suh, J H and Oh, J S},
abstractNote = {The PAL (Pohang Accelerator Laboratory) 2.5-GeV linac is planed to be converted to a SASE-XFEL facility (PAL XFEL) that supplies coherent X-rays down to 0.3-nm wavelength. The electron beams has to have an emittance of 1.0 mm-mrad, a peak current of 3 kA, and a low energy spread of 1.0 MeV. In order to provide reasonably stable SASE output, the RF stability of 0.02% rms is required for both RF phase and amplitude. 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%. This is a technologically challenging issue for PAL XFEL. An inverter technology is to be applied to charge the PFN of a new modulator. Therefore, a new inverter system should provide very stable charging performances. This paper presents the development of an ultra stable klystron-modulator with an inverter power.},
doi = {10.1063/1.2436054},
url = {https://www.osti.gov/biblio/21043427}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 879,
place = {United States},
year = {Fri Jan 19 00:00:00 EST 2007},
month = {Fri Jan 19 00:00:00 EST 2007}
}