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@ARTICLE{Chen:634671,
      author       = {Chen, Ye Lining and Brinker, Frank and Decking, Winfried
                      and Scholz, Matthias and Winkelmann, Lutz and Zhu, Zihan},
      title        = {{V}irtual commissioning of the {E}uropean {XFEL} for
                      advanced user experiments at photon energies beyond 25 ke{V}
                      using low-emittance electron beams},
      journal      = {Journal of physics / Conference Series},
      volume       = {IPAC2022},
      number       = {1},
      issn         = {1742-6588},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {PUBDB-2025-02585, DESY-22-076},
      pages        = {012026},
      year         = {2022},
      abstract     = {Growing interests in ultra-hard X-rays are pushing forward
                      the frontier of commissioning the European X-ray
                      Free-Electron Laser (XFEL) for routine operation towards the
                      sub-ångström regime, where a photon energy of 25 keV (0.5
                      Å) and above is desired. Such X-rays allow for larger
                      penetration depths and enable the investigation of materials
                      in highly absorbing environments. Delivering the requested
                      X-rays to user experiments is of crucial importance for the
                      XFEL development. Unique capabilities of the European XFEL
                      are formed by combining a high energy linac and the long
                      variable-gap undulator systems for generating intense X-rays
                      at 25 keV and pushing the limit even further to 30 keV.
                      However, the FEL performance relies on achievable electron
                      bunch qualities. Low-emittance electron bunch production,
                      and the associated start-to-end modelling of beam physics
                      thus becomes a prerequisite to dig into the XFEL potentials.
                      Here, we present the obtained simulation results from a
                      virtual commissioning of the XFEL for the user experiments
                      at 25 keV and beyond, including the optimized electron bunch
                      qualities and corresponding FEL lasing performance.
                      Experimental results at 30 keV from the first test run are
                      presented.},
      month         = {Jun},
      date          = {2022-06-17},
      organization  = {13th International Particle
                       Accelerator Conference, Muangthong
                       Thani (Thailand), 17 Jun 2022 - 22 Jun
                       2022},
      cin          = {MXL},
      ddc          = {530},
      cid          = {I:(DE-H253)MXL-20160301},
      pnm          = {621 - Accelerator Research and Development (POF4-621) /
                      6G13 - Accelerator of European XFEL (POF4-6G13)},
      pid          = {G:(DE-HGF)POF4-621 / G:(DE-HGF)POF4-6G13},
      experiment   = {EXP:(DE-H253)XFEL(machine)-20150101},
      typ          = {PUB:(DE-HGF)8 / PUB:(DE-HGF)16},
      doi          = {10.1088/1742-6596/2420/1/012026},
      url          = {https://bib-pubdb1.desy.de/record/634671},
}