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Title Shaping trailing beams for beam loading via beam-induced-ionization injection at FACET
Author(s) Amorim, Lígia Diana (SUNY, Stony Brook) ; Vafaei-Najafabadi, Navid (SUNY, Stony Brook) ; Emma, Claudio (SLAC) ; Clarke, Christine I (SLAC) ; Green, Selina Z (SLAC) ; Storey, Doug (SLAC) ; White, Glen (SLAC) ; O'Shea, Brendan (SLAC) ; Hogan, Mark J (SLAC) ; Yakimenko, Vitaly (SLAC) ; Litos, Michael (U. Colorado, Boulder) ; Raj, Gaurav (Palaiseau, Lab. Opt. Appl.) ; Kononenko, Olena (Palaiseau, Lab. Opt. Appl.) ; Claveria, Pablo San Miguel (Palaiseau, Lab. Opt. Appl.) ; Corde, Sébastien (Palaiseau, Lab. Opt. Appl.) ; Gessner, Spencer (CERN) ; Xu, Xinlu (UCLA, Los Angeles (main)) ; Marsh, Ken (UCLA, Los Angeles (main)) ; Clayton, Chris E (UCLA, Los Angeles (main)) ; Joshi, Chandrashekhar (UCLA, Los Angeles (main)) ; Mori, Warren B (UCLA, Los Angeles (main)) ; Adli, Erik (U. Oslo (main))
Publication 2019
Number of pages 10
In: Phys. Rev. Accel. Beams 22 (2019) 111303
DOI 10.1103/PhysRevAccelBeams.22.111303
Subject category Accelerators and Storage Rings
Abstract Recent progress in plasma based accelerator technology has demonstrated its ability to deliver high energy (GeV) beams in compact structures (centimeter to meter scale plasmas). Current developments of that technology are oriented toward producing beams with quality and energy spread comparable to those obtained using standard accelerating structures. In plasma based accelerators, the beam energy spread can be improved during the acceleration process through beam loading. To achieve optimum beam loading, the beam has to be shaped such that the superposition of its space charge fields and plasma fields result in a uniform accelerating field. In this work we show how beam-induced-ionization injection can be used to shape and inject a trailing beam suitable for beam loading. Our particle-in-cell numerical simulations done with OSIRIS show the ionization injection of a shaped 340 pC, 13 kA and 3  μm long electron beam accelerated to 900 MeV in less than 3 cm of plasma. The configurations considered numerically were based on the beams and plasmas that have been and will be available at the FACET facility.
Copyright/License publication: (License: CC-BY-4.0)

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 Záznam vytvorený 2019-11-27, zmenený 2019-12-17


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