Author: Řežaeizadeh, A.     [Řežaeizadeh, A.]
Paper Title Page
MOPTY060 Pulse Compressor Phase and Amplitude Modulation Based on Iterative Learning Control 1076
 
  • A. Řežaeizadeh, R. Kalt, T. Schilcher
    PSI, Villigen PSI, Switzerland
  • R. Smith
    Automatic Control Laboratory, ETH Zurich, Zurich, Switzerland
 
  This paper presents an alternative way to produce flat-topped RF pulses at the pulse compressor output. Flat-topped RF pulses are suitable for multi-bunch operation where it is often required that beams experience the same accelerating gradient. Moreover, the energy gain, in this case, is less sensitive to timing jitters. The proposed approach is based on Iterative Learning Control technique, which iteratively updates the input waveforms, in order to generate the desired output waveforms.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-MOPTY060  
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MOPTY061 Beam-Based Power Distribution Over Multiple Klystrons in a Linear Accelerator 1079
 
  • A. Řežaeizadeh, R. Kalt, T. Schilcher
    PSI, Villigen PSI, Switzerland
  • R. Smith
    Automatic Control Laboratory, ETH Zurich, Zurich, Switzerland
 
  A linear accelerator including several klystron driver RF stations can be viewed as a single virtual RF station with a certain accelerating RF voltage (in amplitude and phase). This paper develops an optimization scheme that, for a specified beam energy gain, determines the klystrons output powers and the modulators high voltages optimally. The algorithm employs the klystron nonlinear static characteristics curves to calculate the input RF amplitude of the drive chain.
A. Řežaeizadeh, et al, Model-based klystron linearization in the SwissFEL test facility, 36th International Free Electron Laser Conference, Basel, Switzerland
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-MOPTY061  
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