Author: Gessner, S.J.
Paper Title Page
TUYB1 First Measurements of Trojan Horse Injection in a Plasma Wakefield Accelerator 1252
 
  • B. Hidding, A. Beaton, A.F. Habib, T. Heinemann, G.G. Manahan, P. Scherkl, A. Sutherland, D. Ullmann
    USTRAT/SUPA, Glasgow, United Kingdom
  • E. Adli, C.A. Lindstrøm
    University of Oslo, Oslo, Norway
  • E. Adli, S.J. Gessner
    CERN, Geneva, Switzerland
  • G. Andonian, A. Deng, J.B. Rosenzweig
    UCLA, Los Angeles, California, USA
  • G. Andonian
    RadiaBeam, Santa Monica, California, USA
  • A. Beaton, A.F. Habib, T. Heinemann, B. Hidding, G.G. Manahan, P. Scherkl, A. Sutherland, D. Ullmann
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
  • D.L. Bruhwiler
    RadiaSoft LLC, Boulder, Colorado, USA
  • J.R. Cary
    Tech-X, Boulder, Colorado, USA
  • C.I. Clarke, S.Z. Green, M.J. Hogan, B.D. O'Shea, V. Yakimenko
    SLAC, Menlo Park, California, USA
  • M. Downer, R. Zgadzaj
    The University of Texas at Austin, Austin, Texas, USA
  • T. Heinemann, A. Knetsch
    DESY, Hamburg, Germany
  • T. Heinemann, G. Wittig
    University of Hamburg, Hamburg, Germany
  • O.S. Karger
    University of Hamburg, Institut für Experimentalphysik, Hamburg, Germany
  • M.D. Litos
    Colorado University at Boulder, Boulder, Colorado, USA
  • J.D.A. Smith
    TXUK, Warrington, United Kingdom
 
  Funding: Work supported in part by the U.S. Department of Energy under contract number DE-AC02-76SF00515.
Plasma accelerators support accelerating fields of 100's of GV/m over meter-scale distances and routinely produce femtosecond-scale, multi-kA electron bunches. The so called Trojan Horse underdense photocathode plasma wakefield acceleration scheme combines state-of-the-art accelerator technology with laser and plasma methods and paves the way to improve beam quality as regards emittance and energy spread by many orders of magnitude. Electron beam brightness levels exceeding 1020 Am-2 rad-2 may be reached, and the tunability allows for multi-GeV energies, designer bunches and energy spreads <0.05% in a single plasma accelerator stage. The talk will present results of the international E210 multi-year experimental program at SLAC FACET, which culminated in successful first demonstration of the Trojan Horse method during FACET's final experimental run in 2016. Enabling implications for applications, including high performance plasma-based 5th generation light sources such as hard x-ray FEL's, for which start-to-end simulations are presented, and for high energy physics are discussed.
 
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUYB1  
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TUPIK032 AWAKE Proton Beam Commissioning 1747
 
  • J.S. Schmidt, D. Barrientos, M. Barros Marin, B. Biskup, A. Boccardi, T.B. Bogey, T. Bohl, C. Bracco, S. Cettour Cave, H. Damerau, V. Fedosseev, F. Friebel, S.J. Gessner, A. Goldblatt, E. Gschwendtner, L.K. Jensen, V. Kain, T. Lefèvre, S. Mazzoni, J.C. Molendijk, A. Pardons, C. Pasquino, S.F. Rey, H. Vincke, U. Wehrle
    CERN, Geneva, Switzerland
  • J.T. Moody
    MPI-P, München, Germany
  • K. Rieger
    MPI, Muenchen, Germany
 
  AWAKE will be the first proton driven plasma wakefield acceleration experiment worldwide. The facility is located in the former CNGS area at CERN and will include a proton, laser and electron beam line merging in a 10 m long plasma cell, which is followed by the experimental diagnostics. In the first phase of the AWAKE physics program, which started at the end of 2016, the effect of the plasma on a high energy proton beam will be studied. A proton bunch is expected to experience the so called self-modulation instability, which leads to the creation of micro-bunches within the long proton bunch. The plasma channel is created in a rubidium vapor via field ionization by a TW laser pulse. This laser beam has to overlap with the proton beam over the full length of the plasma cell, resulting in tight requirements for the stability of the proton beam at the plasma cell in the order of ~ 0.1 mm. In this paper the beam commissioning results of the ~810 m long transfer line for proton bunches with 3·1011 protons/bunch and a momentum of 400 GeV/c will be presented with a focus on the challenges of the parallel operation of the laser and proton beam.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK032  
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TUPIK061 Data Acquisition and Controls Integration of the AWAKE Experiment at CERN 1833
 
  • V.K.B. Olsen
    University of Oslo, Oslo, Norway
  • J.J. Batkiewicz, S. Deghaye, S.J. Gessner, E. Gschwendtner
    CERN, Geneva, Switzerland
  • P. Muggli
    MPI, Muenchen, Germany
 
  The AWAKE experiment has been successfully installed in the CNGS facility at CERN, and is currently in its first stage of operation. The experiment seeks to demonstrate self-modulation of an SPS proton beam in a rubidium plasma, driving a wakefield of several gigavolt per meter. We describe the data acquisition and control system of the AWAKE experiment, its integration into the CERN control system and new control developments specifically required for AWAKE.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK061  
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