P03 exploits the excellent photon beam properties of PETRA III to provide micro- and nanofocused beams with ultra-high intensity and resolution in real and reciprocal space. Among the available methods are μGISAXS and μSAXS tomography along with their extensions to nanosized beams and scanning nanodiffraction in SAXS/WAXS geometries. Hence, the beamline design is dedicated to a micro- and a nanofocus endstation being both capable of transmission as well as grazing incidence experiments. The MiNaXS beamline exploits one of a high-β canted 2m undulator pairs. The energy range of the beamline is foreseen as 8–23keV. In combination with Si(111) crystals, this demands a very high stability and precise positioning. To suppress higher harmonics, a planar double-mirror with low incidence angle compatible with the large energy range of the beamline will be used.The details of the two end stations are as follows:
- The microfocus end station (hutch EH1) provides beam dimensions of 42x20μm2 and 22x 13μm2. Since 2012, an even smaller microfocus (projected beam size 10x 5μm2) was brought into operation.
- Additionally, a 1:1 imaging layout for combining USAXS (Ultra Small-Angle X-ray Scattering) with a moderately microfocused beam is currently discussed.
- A variety of sample environments is offered at the microfocus end station, ranging from imaging ellipsometry to fluidics and sputter deposition
- The nanofocus end station (hutch EH2) offers a minimum beam size of 250 x 350 nm² throughout the entire energy range. A long focal distance KB-mirror optics is used to provide a clear working distance of close to 10 cm which provides an excellent setting even for extended sample environments. A range of different in-situ sample environments have already been successfully used in scanning nanodiffraction experiments (e.g. high pressure cells, nanoindentation devices, tensile rigs, electric / magnetic field cells, microfluidics setups).