Author: Carbajo, S.
Paper Title Page
MOPA78 Temporally-Shaped Ultraviolet Pulses for Tailored Bunch Generation at Argonne Wakefield Accelerator 222
  • T. Xu, P. Piot
    Northern Illinois University, DeKalb, Illinois, USA
  • S. Carbajo
    UCLA, Los Angeles, California, USA
  • S. Carbajo, R.A. Lemons
    SLAC, Menlo Park, California, USA
  • P. Piot
    ANL, Lemont, Illinois, USA
  Photocathode laser shaping is an appealing technique to generate tailored electron bunches due to its versatility and simplicity. Most photocathodes require photon energies exceeding the nominal photon energy produced by the lasing medium. A common setup consists of an infrared (IR) laser system with nonlinear frequency conversion to the ultraviolet (UV). In this work, we present the numerical modeling of a temporal shaping technique capable of producing electron bunches with linearly-ramped current profiles for application to collinear wakefield accelerators. Specifically, we show that controlling higher-order dispersion terms associated with the IR pulse provides some control over the UV temporal shape. Beam dynamics simulation of an electron-bunch shaping experiment at the Argonne Wakefield Accelerator is presented.  
DOI • reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-MOPA78  
About • Received ※ 01 August 2022 — Revised ※ 06 August 2022 — Accepted ※ 09 August 2022 — Issue date ※ 31 August 2022
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Nonlinearly Shaped Pulses at LCLS-II  
  • N.R. Neveu, S. Carbajo, Y. Ding, J.P. Duris, R.A. Lemons, A. Marinelli, J. Tang
    SLAC, Menlo Park, California, USA
  Funding: DOE
With the goal of improving emittance and longitudinal phase space of the electron beam, we consider nonlinear shaping of the temporal laser profile at the cathode. The operational Ultraviolet (UV) optics installed at the LCLS and LCLS-II currently produce Gaussian shaped pulses. Our simulations show the potential to reduce emittance and increase peak brightness when comparing nonlinear UV laser shapes on the cathode to baseline Gaussian pulses at the cathode.
slides icon Slides FRXD5 [3.597 MB]  
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