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TY - CONF AU - Zemella, J. AU - Hellert, T. AU - Scholz, M. AU - Vogt, M. ED - Petit-Jean-Genaz, Christine ED - Arduini, Gianluigi ED - Michel, Peter ED - Schaa, Volker RW TI - Measurements of the Optical Functions at FLASH J2 - Proc. of IPAC2014, Dresden, Germany, June 15-20, 2014 C1 - Dresden, Germany T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - In 2013 the superconducting soft x-ray Free Electron Laser FLASH at DESY (Hamburg, Germany) the extraction section needed to connect the 2nd beam line FLASH2 was installed. In order to allow simultaneous operation of the two beam lines (FLASH1/2), the optical functions in the extraction area needed to be modified. During the recommissioning of FLASH we have optimized, measured and corrected the optical functions in the machine. We report on the the results and the methods. PB - JACoW CP - Geneva, Switzerland SP - 1141 EP - 1143 KW - optics KW - quadrupole KW - linac KW - controls KW - coupling DA - 2014/07 PY - 2014 SN - 978-3-95450-132-8 DO - 10.18429/JACoW-IPAC2014-TUPRO050 UR - http://jacow.org/ipac2014/papers/tupro050.pdf ER -