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TY - UNPB AU - Lutman, A.A. ED - Schaa, Volker R.W. ED - Decking, Winfried ED - Sinn, Harald ED - Geloni, Gianluca ED - Schreiber, Siegfried ED - Marx, Michaela TI - Two-Pulse Schemes in Soft and Hard X-Ray FELs: Robustness Analysis of State-of-the-Art Solutions J2 - Proc. of FEL2019, Hamburg, Germany, 26-30 August 2019 CY - Hamburg, Germany T2 - Free Electron Laser Conference T3 - 39 LA - english AB - Several X-ray two-pulse schemes have been developed to meet the increasing experimental requirements in terms of power, wavelength separation and delay control. For particular experiments, the wavelength or the delay applicability range limits the choice of the usable scheme to a single one. In other occasions multiple schemes can produce the desired X-ray beams and the choice of the used one falls on operation simplicity. An example are two-color beams in the soft X-rays produced with the fresh-slice schemes that can be enabled by different time-dependent orbit control or by transverse matching. The focus in this talk will be on the operation robustness, reliability and reproducibility for the different two-color schemes. PB - JACoW Publishing CP - Geneva, Switzerland ER -