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@ARTICLE{Paraskaki:459128,
      author       = {Paraskaki, Georgia and Faatz, Bart and Ackermann, Sven and
                      Schaper, Lucas and Zemella, Johann and Lang, Tino and
                      Geloni, Gianluca and Pannek, Fabian},
      title        = {{A}dvanced {S}cheme to {G}enerate {MH}z, {F}ully {C}oherent
                      {FEL} {P}ulses at nm {W}avelength},
      journal      = {Applied Sciences},
      volume       = {11},
      number       = {13},
      issn         = {2076-3417},
      address      = {Basel},
      publisher    = {MDPI},
      reportid     = {PUBDB-2021-02429},
      pages        = {6058},
      year         = {2021},
      abstract     = {Current FEL development efforts aim at improving the
                      control of coherence at high repetition-rate while keeping
                      the wavelength tunability. Seeding schemes, like HGHG and
                      EEHG, allow for the generation of fully coherent FEL pulses,
                      but the powerful external seed laser required limits the
                      repetition-rate that can be achieved. In turns, this impacts
                      the average brightness, and the amount of statistics that
                      experiments can do. In order to solve this issue, here we we
                      take a unique approach and discuss the use of one or more
                      optical cavities to seed the electron bunches accelerated in
                      a superconducting linac to modulate their energy. Like
                      standard seeding schemes, the cavity is followed by a
                      dispersive section, which manipulates the longitudinal phase
                      space of the electron bunches, inducing longitudinal density
                      modulations with high harmonic content that undergo the FEL
                      process in an amplifier placed downstream. We will discuss
                      technical requirements for implementing these setups and
                      their operation range based on numerical simulations.},
      cin          = {MFL / FS-FLASH / MPY},
      ddc          = {600},
      cid          = {I:(DE-H253)MFL-20120731 / I:(DE-H253)FS-FLASH-20140814 /
                      I:(DE-H253)MPY-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)FLASH2020p-20221201},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000672310100001},
      doi          = {10.3390/app11136058},
      url          = {https://bib-pubdb1.desy.de/record/459128},
}