Laser-ionized, beam-driven, underdense, passive thin plasma lens

C. E. Doss, E. Adli, R. Ariniello, J. Cary, S. Corde, B. Hidding, M. J. Hogan, K. Hunt-Stone, C. Joshi, K. A. Marsh, J. B. Rosenzweig, N. Vafaei-Najafabadi, V. Yakimenko, M. Litos

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)
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Abstract

We present a laser-ionized, beam-driven, passive thin plasma lens that operates in the nonlinear blowout regime. This thin plasma lens provides axisymmetric focusing for relativistic electron beams at strengths unobtainable by magnetic devices. It is tunable, compact, and it imparts little to no spherical aberrations. The combination of these features make it more attractive than other types of plasma lenses for highly divergent beams. A case study is built on beam matching into a plasma wakefield accelerator at SLAC National Accelerator Laboratory's FACET-II facility. Detailed simulations show that a thin plasma lens formed by laser ionization of a gas jet reduces the electron beam's waist beta function to half of the minimum value achievable by the FACET-II final focus magnets alone.

Original languageEnglish
Article number111001
Number of pages9
JournalPhysical Review Accelerators and Beams
Volume22
Issue number11
DOIs
Publication statusPublished - 7 Nov 2019

Keywords

  • plasma lens
  • axisymmetric focusing
  • electron beams

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