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@INPROCEEDINGS{Gtze:618817,
      author       = {Götze, Kathrin and Vagin, Pavel and Neumann, Paul and
                      Yamin, Sumera and Kekilli, Hasret and Tischer, Markus},
      title        = {{C}orrector coils with variable field direction for {FLASH}
                      2020},
      journal      = {Journal of physics / Conference Series},
      volume       = {3010},
      number       = {1},
      issn         = {1742-6588},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {PUBDB-2024-07171},
      pages        = {012019},
      year         = {2025},
      note         = {2025 J. Phys.: Conf. Ser. 3030},
      abstract     = {Despite thorough tuning of insertion devices for storage
                      rings or linear accelerators,a (usually gap dependent) kick
                      to the electron beam remains and has to becorrected with the
                      help of steerer coils. These small, resistive coils are
                      placed upstreamand downstream of an undulator and by varying
                      the strength and direction of the generatedmagnetic field,
                      they allow to deflect the beam by a small angle and to
                      consequentlycorrect its trajectory. For the upgrade of the
                      free-electron laser FLASH at DESY Hamburgwe have developed
                      compact and cost-efficient air-cooled steerer coils based on
                      asolid ferrite core around which four sub-coils are wound in
                      a particular geometry. Byenergizing these coils separately,
                      the deflecting field can be tuned and adapted to the
                      gapdependent kick. The ferrite core enhances the coil
                      strength by more than $50\%$ comparedto previous designs
                      enabling them to generate 0.53(0.44)Tmm for horizontal
                      (vertical)field at 1A while still making the steerer
                      suitable for use in a slow feedback system. However,due to
                      the proximity of some steerers to permanent magnet-based
                      phase shifters,significant cross-talk between the two
                      devices is introduced and needs to be mitigated.},
      month         = {Aug},
      date          = {2024-08-26},
      organization  = {15th International Conference on
                       Synchrotron Radiation Instrumentation,
                       Hamburg (Germany), 26 Aug 2024 - 30 Aug
                       2024},
      cin          = {FS-US},
      ddc          = {530},
      cid          = {I:(DE-H253)FS-US-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 / PUB:(DE-HGF)8},
      doi          = {10.1088/1742-6596/3010/1/012019},
      url          = {https://bib-pubdb1.desy.de/record/618817},
}