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The layout of the Variable Polarization XUV Beamline P04 at PETRA III is described with emphasis on selected examples of optics, mirrors and gratings. A precise characterization of the optics, their performance inside the holder and of the surrounding mechanics is presented. This also includes a detailed characterization of the different beamline mechanics as a whole (grating unit, exit slit unit, re-focusing unit) including the environment.

Experimental set-up-angular streaking spectroscopy. Previous streaking measurements of XFEL pulses 37-39 used a linearly polarized streaking field to encode their temporal profile onto the kinetic energy of photoelectrons. Depending on the amplitude and phase of