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TY - CONF AU - Krasilnikov, M. AU - Boonpornprasert, P. AU - Chen, Y. AU - Dohlus, M. AU - Georgiev, G.Z. AU - Good, J.D. AU - Groß, M. AU - Huang, P.W. AU - Isaev, I.I. AU - Koschitzki, C. AU - Lal, S. AU - Li, X. AU - Lishilin, O. AU - Loisch, G. AU - Melkumyan, D. AU - Niemczyk, R. AU - Oppelt, A. AU - Qian, H.J. AU - Shaker, H. AU - Shu, G. AU - Stephan, F. AU - Vashchenko, G. AU - Vogel, E. ED - Schaa, Volker R.W. ED - Decking, Winfried ED - Sinn, Harald ED - Geloni, Gianluca ED - Schreiber, Siegfried ED - Marx, Michaela TI - PITZ Experimental Optimization for the Aimed Cathode Gradient of a Superconducting CW RF Gun J2 - Proc. of FEL2019, Hamburg, Germany, 26-30 August 2019 CY - Hamburg, Germany T2 - Free Electron Laser Conference T3 - 39 LA - english AB - A continuous wave (CW) mode operation of the European X-ray Free-Electron Laser (XFEL) is under considerations for a future upgrade. Therefore, a superconducting radio frequency (SRF) CW gun is under experimental development at DESY in Hamburg. Beam dynamics simulations for this setup have been done assuming 100 pC bunch charge and a maximum electric field at the photocathode of 40 MV/m. Experimental studies for these parameters using a normal conducting RF photogun have been performed at the Photo Injector Test facility at DESY in Zeuthen (PITZ). The beam transverse emittance was minimized by optimizing the main photo injector parameters in order to demonstrate the feasibility of generating electron beams with a beam quality required for successful CW operation of the European XFEL for conditions similar to the SRF gun setup. PB - JACoW Publishing CP - Geneva, Switzerland SP - 440 EP - 443 KW - emittance KW - gun KW - laser KW - cathode KW - SRF DA - 2019/11 PY - 2019 SN - "" SN - 978-3-95450-210-3 DO - doi:10.18429/JACoW-FEL2019-WEP051 UR - http://jacow.org/fel2019/papers/wep051.pdf ER -