Author: Steinhagen, R.J.
Paper Title Page
MOPB049 An Optical Intra-Bunch Instability Monitor for Short Electron Bunches 161
 
  • T.G. Lucas, P.J. Giansiracusa, D.J. Peake, R.P. Rassool
    The University of Melbourne, Melbourne, Victoria, Australia
  • M.J. Boland
    ASCo, Clayton, Victoria, Australia
  • R.J. Steinhagen
    GSI, Darmstadt, Germany
 
  An improved understanding of intra-bunch instabilities in synchrotron light source electron bunches is crucial to overcoming the imposed limitations of the achievable intensity. A Multiband Instability Monitor, designed specifically for the short bunches of a synchrotron light source, has been developed to perform measurements of intra-bunch dynamics. The MIM performs real-time measurements at a diagnostic beamline using optical synchrotron radiation incident on a high speed photodetector. Three frequency bands up to 12 GHz were used to identify characteristic frequency signatures of intra-bunch instabilities. Mixed to baseband using RF detectors, these high frequency measurements can be performed without the need for similarly high frequency digitisers. This paper reports on the performance of the system at the Australian Synchrotron.  
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