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@ARTICLE{Knetsch:459686,
      author       = {Knetsch, Alexander and Sheeran, Bridget and Boulton, Lewis
                      and Niknejadi, Pardis and Poder, Kristjan and Schaper, Lucas
                      and Zeng, Ming and Bohlen, Simon and Boyle, Gregory James
                      and Bruemmer, Theresa Karoline and Chappell, James and
                      D'Arcy, R. and Diederichs, Severin and Foster, Brian and
                      Garland, Matthew James and Gonzalez Caminal, Pau and
                      Hidding, Bernhard and Libov, Vladislav and Lindstrøm, Carl
                      Andreas and Martinez de la Ossa, Alberto and Meisel, Martin
                      and Parikh, Trupen and Schmidt, Bernhard and Schröder,
                      Sarah and Tauscher, Gabriele and Wesch, Stephan and Winkler,
                      Paul Viktor and Wood, Jonathan Christopher and Osterhoff,
                      Jens},
      title        = {{S}table witness-beam formation in a beam-driven plasma
                      cathode},
      journal      = {Physical review accelerators and beams},
      volume       = {24},
      number       = {10},
      issn         = {1098-4402},
      address      = {College Park, MD},
      publisher    = {American Physical Society},
      reportid     = {PUBDB-2021-02678, arXiv:2007.12639. DESY-20-125},
      pages        = {101302},
      year         = {2021},
      note         = {Phys. Rev. Accel. Beams 24, 101302 (2021). 11 pages, 9
                      figures},
      abstract     = {Electron beams to be accelerated in beam-driven plasma
                      wakes are commonly formed by a photocathode and externally
                      injected into the wakefield of a preceding bunch.
                      Alternatively, using the plasma itself as a cathode offers
                      the possibility of generating ultrashort, low-emittance
                      beams by trapping and accelerating electrons from the
                      ambient plasma background. Here, we present a beam-driven
                      plasma cathode realized via laser-triggered density-downramp
                      injection, showing stable beam formation over more than a
                      thousand consecutive events with an injection probability of
                      95 $\%.$ The plasma cathode is highly tunable, resulting in
                      the injection of electron bunches of tens of pC of charge,
                      energies of up to 79 MeV, and relative energy spreads as low
                      as a few percent and the achieved stability allowed for the
                      first multi-shot evaluation of the emittance of injected
                      beams.},
      keywords     = {plasma: wake field (INSPIRE) / electron: beam (INSPIRE) /
                      accelerator: wake field (INSPIRE) / beam: injection
                      (INSPIRE) / stability (INSPIRE) / efficiency (INSPIRE) /
                      performance (INSPIRE) / beam emittance (INSPIRE) / DESY Lab
                      (INSPIRE) / electrode (INSPIRE) / plasma: density (INSPIRE)
                      / electron: velocity (INSPIRE) / electron: energy spectrum
                      (INSPIRE) / bibliography (INSPIRE)},
      cin          = {FTX / MPY / MPA / MPA1 / MPA2 / MPA3 / MVS},
      ddc          = {530},
      cid          = {I:(DE-H253)FTX-20210408 / I:(DE-H253)MPY-20120731 /
                      I:(DE-H253)MPA-20200816 / I:(DE-H253)MPA1-20210408 /
                      I:(DE-H253)MPA2-20210408 / I:(DE-H253)MPA3-20210408 /
                      I:(DE-H253)MVS-20120731},
      pnm          = {621 - Accelerator Research and Development (POF4-621)},
      pid          = {G:(DE-HGF)POF4-621},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)16},
      eprint       = {2007.12639},
      howpublished = {arXiv:2007.12639},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2007.12639;\%\%$},
      UT           = {WOS:000706475500001},
      doi          = {10.1103/PhysRevAccelBeams.24.101302},
      url          = {https://bib-pubdb1.desy.de/record/459686},
}