Author: Adli, E.
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.
 
slides icon Slides TUYB1 [19.089 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUYB1  
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MOPIK078 Narrow-Band, Wide-Range Tuneable THz Source Based on the Slotted-Foil Technique 712
 
  • J. Pfingstner, E. Adli, H. Holmestad
    University of Oslo, Oslo, Norway
  • S. Bettoni, S. Reiche
    PSI, Villigen PSI, Switzerland
 
  The FEL user community has expressed a strong interest in a THz source for the excitation of their samples in pump probe experiments. The demanded THz properties are challenging to achieve, as they include a narrow bandwidth of <5-10%, the possibility of frequency tuning between 1 and 20 THz, a THz pulse energy of about 100 uJ, and a fixed phase relation from shot-to-shot. To fulfil these specifications, an accelerator-based source is proposed in this paper. It utilises the slotted-foil technique to create a pre-bunched electron beam that is injected into a helical undulator. Detailed simulation studies presented in this paper show that the corresponding undulator radiation has the demanded properties.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPIK078  
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WEPVA066 The ESS Target Proton Beam Imaging System as in-Kind Contribution 3422
 
  • E. Adli, R. Andersson, D.M. Bang, O. Dorholt, H. Gjersdal, O.M. Røhne
    University of Oslo, Oslo, Norway
  • M.G. Ibison, C.P. Welsch
    The University of Liverpool, Liverpool, United Kingdom
  • S. Joshi
    University College West, Trollhätan, Sweden
  • T.J. Shea, C.A. Thomas
    ESS, Lund, Sweden
 
  Funding: This work is part of the Norwegian in-kind contribution to ESS.
The ESS Target Proton Beam Imaging System will image the 5 MW ESS proton beam as it enters the spallation target. The system will operate in a harsh radiation environment, leading to a number of challenges: development of radiation hard photon sources, long aperture-restricted optical paths, and fast electronics to provide rapid response to beam anomalies. The newly formed accelerator group at the University of Oslo is the in-kind partner for the Imaging System. This paper outlines the main challenges of the Imaging System and how they are addressed within the collaborative nature of the in-kind project.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPVA066  
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