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000289143 041__ $$aEnglish
000289143 1001_ $$0P:(DE-HGF)0$$aAckermann, W.$$b0$$eCorresponding author
000289143 245__ $$aEigenmode Calculations for the TESLA Cavity Considering Wave-Propagation Losses through Fundamental and Higher-Order Mode Couplers
000289143 260__ $$c2015
000289143 300__ $$a227
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000289143 520__ $$aThe presented work focuses on the computation of three-dimensional eigenmodes for a single TESLA 1.3 GHz cavity considering a lossy behavior resulting from dedicated components like the fundamental and the higher-order mode couplers (HOM) but also from the attached beam tubes. Because the structural elements are manufactured using superconductive materials, the dissipative behavior of the model does not arise from the material itself but is instead attributed to the fact that appropriate matched waveguides are attached to the coupling elements. In contrast to previous examinations, the applied numerical method is immediately capable to set up and solve complex-valued eigenvalue problems derived from precisely modeled three-dimensional structures and suitable boundary conditions.  In this context, the eigenvectors represent the distribution of the electric and magnetic fields while the eigenvalues describe the respective resonance frequency as well as the quality factor. The work intends to provide a detailed overview of the electromagnetic field distribution and related properties of the first 194 modes up to the fifth dipole passband where the influence of the main coupler, the two HOM couplers and the two beam pipes is precisely taken into account.
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000289143 7001_ $$0P:(DE-HGF)0$$aDe Gersem, H.$$b1
000289143 7001_ $$0P:(DE-H253)PIP1002558$$aLiu, C.$$b2
000289143 7001_ $$0P:(DE-HGF)0$$aWeiland, and T.$$b3
000289143 8564_ $$uhttps://www.desy.de/xfel-beam/data/talks/files/2015.09.22_10_55_55_00_1_Tesla13-ModeAtlas_2015.pdf
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