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@ARTICLE{Schneidmiller:205470,
      author       = {Schneidmiller, Evgeny Alexanrdovich and Yurkov, Mikhail},
      title        = {{O}ptimization of a {H}igh {E}fficiency {FEL} amplifier},
      reportid     = {PUBDB-2015-00034, DESY-14-161. arXiv:1410.5957},
      year         = {2014},
      note         = {OA},
      abstract     = {The problem of an efficiency increase of an FEL amplifier
                      is now of great practical importance. Technique of undulator
                      tapering in the post-saturation regime is used at the
                      existing x-ray FELs LCLS and SACLA, and is planned for use
                      at the European XFEL, Swiss FEL,and PAL XFEL. There are also
                      discussions on the future of high peak and average power
                      FELs for scientific and industrial applications. In this
                      paper we perform detailed analysis of the tapering
                      strategies for high power seeded FEL amplifiers. Application
                      of similarity techniques allows us to derive universal law
                      of the undulator tapering.},
      cin          = {MPY},
      cid          = {I:(DE-H253)MPY-20120731},
      pnm          = {Facility (machine) FLASH (POF2-FLASH-20130405) / Facility
                      (machine) XFEL (POF2-XFEL-20130405)},
      pid          = {G:(DE-H253)POF2-FLASH-20130405 /
                      G:(DE-H253)POF2-XFEL-20130405},
      experiment   = {EXP:(DE-H253)FLASH(machine)-20150101 /
                      EXP:(DE-H253)XFEL(machine)-20150101},
      typ          = {PUB:(DE-HGF)25 / PUB:(DE-HGF)29},
      eprint       = {1410.5957},
      howpublished = {arXiv:1410.5957},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:1410.5957;\%\%$},
      url          = {https://bib-pubdb1.desy.de/record/205470},
}