Author: Harrison, M.A.
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MOPOW044 Commissioning of the RadiaBeam / SLAC Dechirper 809
 
  • M.W. Guetg, K.L.F. Bane, A. Brachmann, A.S. Fisher, Z. Huang, R.H. Iverson, P. Krejcik, A.A. Lutman, T.J. Maxwell, A. Novokhatski, G. Stupakov, J. Zemella, Z. Zhang
    SLAC, Menlo Park, California, USA
  • M.A. Harrison, M. Ruelas
    RadiaBeam Systems, Santa Monica, California, USA
  • J. Zemella
    DESY, Hamburg, Germany
  • Z. Zhang
    TUB, Beijing, People's Republic of China
 
  We present results on the commissioning of the two-module RadiaBeam / SLAC dechirper system at LCLS. This is the first installation and measurement of a corrugated dechirper at high energy (4.4 - 13.3 GeV), short pulses (< 200 fs) and while observing its effect on an operational FEL. Both the transverse and longitudinal wakefields allow more flexible electron beam tailoring. We verify that, for a single module at a given gap, the strength of the longitudinal wake on axis and the dipole near the axis agree well with the theoretical values. Using direct longitudinal phase space mapping and X-ray FEL spectrum measurements we demonstrate the energy chirp control capabilities.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOW044  
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MOPOW049 Implementation of a Corrugated-Plate Dechirping System for GeV Electron Beam at LCLS 824
 
  • M.A. Harrison, P. Frigola, J.D. McNevin, A.Y. Murokh, M. Ruelas
    RadiaBeam Systems, Santa Monica, California, USA
  • A.M. Babbitt, M. Carrasco, A. Cedillos, R.H. Iverson, P. Krejcik, T.J. Maxwell, Ž. Oven
    SLAC, Menlo Park, California, USA
 
  Funding: This work is supported by US DOE Grant No. DE-SC0009550.
A new corrugated-plate Dechirper was recently installed in the LCLS and underwent commissioning tests to gauge its efficacy in shaping the longitudinal phase space of bunches entering the FEL. Here, we describe in detail the completed four-meter LCLS Dechirper system along with a narrative of its construction. We detail the various challenges and lessons learned in the manufacturing and assembly of this first-of-its-kind device. An outlook on future designs is presented.
 
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOW049  
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