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@ARTICLE{MohammadiBidhendi:616025,
      author       = {Mohammadi Bidhendi, Mahdi and Goetzke, Gesa Inken Caroline
                      and Bermudez Macias, Ivette Jazmin and Ivanov, Rosen and
                      Schneidmiller, Evgeny Alexanrdovich and Mirian, Najmeh and
                      Duesterer, Stefan},
      title        = {{D}etermination of the {XUV} frequency chirp at the
                      free-electron laser {FLASH} by {TH}z streaking and electron
                      beam diagnostic},
      journal      = {Photonics},
      volume       = {11},
      number       = {12},
      issn         = {2304-6732},
      address      = {Basel},
      publisher    = {MDPI},
      reportid     = {PUBDB-2024-06318},
      pages        = {1153},
      year         = {2024},
      abstract     = {Free-electron lasers (FELs) operating in the extreme
                      ultraviolet (XUV) and X-ray regions deliver ultrashort
                      pulses with unprecedented intensity, enabling groundbreaking
                      research across various scientific disciplines. A potential
                      chirp (frequency change within the pulse) of these pulses
                      influences their spectral properties, directly impacting the
                      experimental outcomes and FEL performance. The accurate
                      characterization of {the} chirp is, therefore, important for
                      optimizing FEL operation and interpreting experimental
                      results.This study presents a comprehensive comparison of
                      two techniques determining the chirp of the XUV pulses at
                      FLASH by directly measuring the XUV pulses with THz
                      streaking and by detecting the chirp of the electron bunches
                      by a Transverse Deflection Structure (PolariX TDS) to infer
                      the XUV chirp. We conducted simultaneous measurements using
                      both techniques at FLASH2 while tuning the FEL to produce
                      various energy chirps on the electron bunch.},
      cin          = {FS-FLASH-D / $XFEL_DO_DD_DA$ / MPY},
      ddc          = {530},
      cid          = {I:(DE-H253)FS-FLASH-D-20160930 /
                      $I:(DE-H253)XFEL_DO_DD_DA-20210408$ /
                      I:(DE-H253)MPY-20120731},
      pnm          = {631 - Matter – Dynamics, Mechanisms and Control
                      (POF4-631) / 6G2 - FLASH (DESY) (POF4-6G2)},
      pid          = {G:(DE-HGF)POF4-631 / G:(DE-HGF)POF4-6G2},
      experiment   = {EXP:(DE-H253)F-FL21-20211112},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001383951700001},
      doi          = {10.3390/photonics11121153},
      url          = {https://bib-pubdb1.desy.de/record/616025},
}