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  1. ; ; ; ; (, Physical Review Research)
    We demonstrate through high-fidelity particle-in-cell (PIC) simulations a simple approach for efficiently generating 20 + GeV electron beams with the necessary charge, energy spread, and emittance for use as an injector in a future linear collider or a next generation XFEL. A high quality injected bunch is generated by self-focusing an unmatched electron driver in a nonlinear plasma wakefield. Over pump depletion distances, the drive beam dynamics and self-loading effects lead to high energy, low-energy spread output beams. For plasma densities of 10 18 c m − 3 , PIC simulation results indicate that self-injected beams with 0.52 n C charge can be accelerated to 20 GeV with projected core energy spreads of ≲ 1 % , normalized slice emittances of 110 n m , peak normalized brightness of ≳ 10 19 A / m 2 / rad 2 , and transfer efficiencies of ≳ 44 % . 
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    Free, publicly-accessible full text available May 1, 2026
  2. ; ; ; ; ; (, Physics of Plasmas)
    null (Ed.)
    Full Text Available 
  3. ; ; ; ; ; ; (, Physical Review Accelerators and Beams)
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