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@TECHREPORT{Ackermann:289143,
      author       = {Ackermann, W. and De Gersem, H. and Liu, C. and Weiland,
                      and T.},
      title        = {{E}igenmode {C}alculations for the {TESLA} {C}avity
                      {C}onsidering {W}ave-{P}ropagation {L}osses through
                      {F}undamental and {H}igher-{O}rder {M}ode {C}ouplers},
      reportid     = {PUBDB-2015-05269},
      pages        = {227},
      year         = {2015},
      abstract     = {The presented work focuses on the computation of
                      three-dimensional eigenmodes for a single TESLA 1.3 GHz
                      cavity considering a lossy behavior resulting from dedicated
                      components like the fundamental and the higher-order mode
                      couplers (HOM) but also from the attached beam tubes.
                      Because the structural elements are manufactured using
                      superconductive materials, the dissipative behavior of the
                      model does not arise from the material itself but is instead
                      attributed to the fact that appropriate matched waveguides
                      are attached to the coupling elements. In contrast to
                      previous examinations, the applied numerical method is
                      immediately capable to set up and solve complex-valued
                      eigenvalue problems derived from precisely modeled
                      three-dimensional structures and suitable boundary
                      conditions. In this context, the eigenvectors represent the
                      distribution of the electric and magnetic fields while the
                      eigenvalues describe the respective resonance frequency as
                      well as the quality factor. The work intends to provide a
                      detailed overview of the electromagnetic field distribution
                      and related properties of the first 194 modes up to the
                      fifth dipole passband where the influence of the main
                      coupler, the two HOM couplers and the two beam pipes is
                      precisely taken into account.},
      cin          = {MPY},
      cid          = {I:(DE-H253)MPY-20120731},
      pnm          = {631 - Accelerator R $\&$ D (POF3-631)},
      pid          = {G:(DE-HGF)POF3-631},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)15},
      url          = {https://bib-pubdb1.desy.de/record/289143},
}