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TY - CONF AU - Golubeva, N. AU - Balandin, V. AU - Decking, W. AU - Fröhlich, L. AU - Scholz, M. ED - Schaa, Volker R.W. ED - Decking, Winfried ED - Sinn, Harald ED - Geloni, Gianluca ED - Schreiber, Siegfried ED - Marx, Michaela TI - Steffen Hard-Edge Model for Quadrupoles with Extended Fringe-Fields at the European XFEL J2 - Proc. of FEL2019, Hamburg, Germany, 26-30 August 2019 CY - Hamburg, Germany T2 - Free Electron Laser Conference T3 - 39 LA - english AB - For modeling of linear focusing properties of quadrupole magnets the conventional rectangular model is commonly used for the design and calculations of the linear beam optics for accelerators. At the European XFEL the quadrupole magnets are described using a more accurate Steffen hard-edge model. In this paper we discuss the application of the Steffen approach for the European XFEL quadrupoles and present the examination of the model with the orbit response matrix technique. PB - JACoW Publishing CP - Geneva, Switzerland SP - 588 EP - 591 KW - quadrupole KW - FEL KW - focusing KW - optics KW - linac DA - 2019/11 PY - 2019 SN - "" SN - 978-3-95450-210-3 DO - doi:10.18429/JACoW-FEL2019-THP001 UR - http://jacow.org/fel2019/papers/thp001.pdf ER -