% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Baumann:598142,
      author       = {Baumann, Thomas and Boll, Rebecca and De Fanis, Alberto and
                      Grychtol, Patrik and Ilchen, Markus and Jastrow, Ulf Fini
                      and Kato, Masahiro and Lechner, Christoph and Maltezopoulos,
                      Theophilos and Mazza, Tommaso and Montaño, Jacobo and
                      Music, Valerija and Ovcharenko, Yevheniy and Rennhack, Nils
                      and Rivas, Daniel E. and Saito, Norio and Schmidt, Philipp
                      and Serkez, Svitozar and Sorokin, Andrey and Usenko, Sergey
                      and Yan, Jiawei and Geloni, Gianluca and Tanaka, Takahiro
                      and Tiedtke, Kai and Meyer, Michael},
      title        = {{H}armonic radiation contribution and {X}-ray transmission
                      at the {S}mall {Q}uantum {S}ystems instrument of {E}uropean
                      {XFEL}},
      journal      = {Journal of synchrotron radiation},
      volume       = {30},
      number       = {4},
      issn         = {0909-0495},
      address      = {[Erscheinungsort nicht ermittelbar]},
      publisher    = {Wiley-Blackwell},
      reportid     = {PUBDB-2023-06753},
      pages        = {662 - 670},
      year         = {2023},
      abstract     = {Transmission measurements of the soft X-ray beamline to the
                      Small Quantum Systems (SQS) scientific instrument at the
                      SASE3 undulator of European XFEL are presented. Measurements
                      are reported for a wide range of photon energies (650 eV
                      to 2400 eV), using X-ray gas monitors as well as a
                      bolometric radiometer. The results are in good agreement
                      with simulations for the beam transport and show a
                      transmission of up to $80\%$ over the whole photon energy
                      range. The contribution of second- and third-harmonic
                      radiation of the soft X-ray undulator is determined at
                      selected photon energies by performing transmission
                      measurements using a gas absorber to provide variable
                      attenuation of the incoming photon flux. A comparison of the
                      results with semi-analytic calculations for the generation
                      of free-electron laser pulses in the SASE3 undulator reveals
                      an influence of apertures along the beam transport on the
                      exact harmonic content to be accounted for at the
                      experiment. The second-harmonic content is measured to be in
                      the range of $0.1\%$ to $0.3\%,$ while the third-harmonic
                      contributed a few percent to the SASE3 emission. For
                      experiments at the SQS instrument, these numbers can be
                      reduced through specific selections of the mirror reflection
                      angles.},
      cin          = {FS-FLASH-D / XFEL-User / $XFEL_E2_SQS$},
      ddc          = {550},
      cid          = {I:(DE-H253)FS-FLASH-D-20160930 /
                      I:(DE-H253)XFEL-User-20170713 /
                      $I:(DE-H253)XFEL_E2_SQS-20210408$},
      pnm          = {631 - Matter – Dynamics, Mechanisms and Control
                      (POF4-631)},
      pid          = {G:(DE-HGF)POF4-631},
      experiment   = {EXP:(DE-H253)XFEL-SASE3-20150101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {37163304},
      UT           = {WOS:001028779000001},
      doi          = {10.1107/S1600577523003090},
      url          = {https://bib-pubdb1.desy.de/record/598142},
}