Beam conditioning CRL transfocator optics at the MID instrument of the European XFEL

Beam conditioning CRL transfocator optics implemented at the Materials Imaging and Dynamics (MID) instrument of the European XFEL are described. Two CRL transfocator units are equipped with beryllium parabolic refractive lenses of large radii of curvature to provide collimated or focused x-ray beam in the 5–25 keV photon energy range. Optical schemes, design and performance of the CRL units, which were recently installed at the SASE2 photon tunnels, are presented.