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@INPROCEEDINGS{Wood:642925,
      author       = {Wood, Jonathan Christopher and Beinortaite, Judita and
                      Björklund Svensson, Jonas Halfdan and Boulton, Lewis
                      Anthony and Boyle, Gregory James and Burghart, Philipp and
                      Cowley, James and D'Arcy, Richard and Diaz Pacheco, Juan
                      Pablo Jose and Ferran Pousa, Angel and Foster, Brian and
                      Garland, Matthew James and Gonzalez Caminal, Pau and
                      Hohmann, Marcel Stefan and Huck, Maryam and Jones, Harry and
                      Kanekar, Advait and Krivkova, Anna and Lindstroem, Carl
                      Andreas and Loisch, Gregor and Long, Tianyun and Maier,
                      Andreas and Mewes, Steven Mathis and Müller, Lukas and
                      Najmudin, Ibrahim and Osterhoff, Jens and Parikh, Trupen and
                      Pena Asmus, Felipe Lars and Samoilenko, Dmitrii and
                      Schröder, Sarah and Thévenet, Maxence and Wesch, Stephan
                      and Wing, Matthew},
      title        = {{P}rogress in {E}xperimental {P}lasma {W}akefield
                      {A}cceleration at {FLASHF}orward, {DESY}},
      school       = {DESY},
      reportid     = {PUBDB-2025-05721},
      year         = {2025},
      abstract     = {Plasma accelerators can accelerate electron bunches in
                      fields exceeding 1 GV/m, making them a promising technology
                      to greatly reduce the footprint of future linear colliders.
                      In this scheme, a dense electron bunch drives a charge
                      density wave in the plasma. The strong fields of this
                      ‘wakefield’ are used to accelerate a trailing bunch.
                      Fundamental research on this scheme is performed at the
                      FLASHForward experiment at DESY using FEL-quality bunches
                      from the FLASH linac. This talk will summarise recent
                      results from FLASHForward to help provide an overview of the
                      current status of plasma accelerator research. The
                      experimental results shown here will cover three broad
                      topics: beam-quality preservation, energy efficient
                      acceleration and repetition rate limits. These will include
                      the preservation of per-mille energy spread during
                      acceleration by 45 MeV in GV/m fields with > $40\%$
                      instantaneous energy transfer efficiency, followed by
                      preservation of the normalised emittance of the trailing
                      bunch with > $20\%$ instantaneous energy-transfer
                      efficiency. Progress towards larger energy gains and higher
                      overall efficiency will be shown, which has been aided by
                      the use of Bayesian optimisation techniques. Finally,
                      results will be presented on the ultimate repetition rate of
                      plasma accelerators, which can be limited by the motion of
                      plasma ions as the wakefield decays.},
      month         = {Oct},
      date          = {2025-10-20},
      organization  = {International Workshop on Future
                       Linear Colliders 2025, Valencia
                       (Spain), 20 Oct 2025 - 24 Oct 2025},
      cin          = {$HH_FH_FTX_AS$ / MPL},
      cid          = {$I:(DE-H253)HH_FH_FTX_AS-20210421$ /
                      I:(DE-H253)MPL-20120731},
      pnm          = {621 - Accelerator Research and Development (POF4-621) / 6G2
                      - FLASH (DESY) (POF4-6G2)},
      pid          = {G:(DE-HGF)POF4-621 / G:(DE-HGF)POF4-6G2},
      experiment   = {EXP:(DE-H253)FLASHForward-20150101},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://bib-pubdb1.desy.de/record/642925},
}