Author: Kim, G.
Paper Title Page
MOPMR002 Bunch by Bunch Position Measurement and Analysis at PLS-II 232
 
  • J. Lee, M.-H. Chun, I. Hwang, D.T. Kim, G. Kim, T.-Y. Lee, D.C. Shin, S. Shin
    PAL, Pohang, Kyungbuk, Republic of Korea
 
  Beam dynamic phenomena described by bunch-by-bunch motion are important issues for a storage ring and are described by various theoretical formalisms. Direct measurements of the beam position related to different dynamical mechanisms are a useful information to accelerator optimization. In PLS-II, 20 GHz sampling oscilloscope synchronized with injection event (or triggered by beam loss signal) is used to measure direct bunch by bunch motion. Based on the measured data, the principal component analysis had been performed to get the insight into beam dynamic phenomena such as couple bunch instability and beam oscillation due to kicker leakage. In this paper, we will describe the measurement method and the result of analysis for coupled bunch instability.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPMR002  
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WEYB01 Diagnostic Systems of the PAL-XFEL 2091
 
  • C. Kim, S.Y. Baek, H. J. Choi, J.H. Hong, H.-S. Kang, G. Kim, J.H. Kim, I.S. Ko, S.J. Lee, G. Mun, B.G. Oh, B.R. Park, D.C. Shin, H. Yang
    PAL, Pohang, Kyungbuk, Republic of Korea
 
  The Pohang Accelerator Laboratory (PAL) started an x-ray free electron laser project (PAL-XFEL) in 2011. The construction was finished at the end of 2015 and the commissioning is planned from the beginning of 2016. In the PAL-XFEL, an electron beam with 200 pC will be generated from a photocathode RF gun and will be accelerated to 10 GeV by using a linear accelerator. The electron beam will pass through undulator section to produce hard X-ray radiation. For the successful commissioning and beam operation, various kinds of instruments were prepared.  
slides icon Slides WEYB01 [11.770 MB]  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEYB01  
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