The primary research activity of the beamline will be related to condensed matter physics and material science, in particular strongly-correlated electron systems and new functional materials such as Mott insulators, high-temperature superconductors, thin film oxides, catalysts, graphene, etc. Moreover, the technique has enormous potential for a wide range of applications in chemistry, geology and biology.
The I21 beamline will deliver a high flux of photons over an energy range of 200 eV to about 3000 eV, with full polarization flexibility (linear horizontal, vertical, and circular) between 440 eV and 1500 eV. The beam size at the sample position will be less than 50 × 3 (H × V) µm2. It is planned that the resolving power of the beamline will be better than 2 × 104 at 1 keV. The beamline has a length of 81 m (from x-ray source to sample), and will be equipped with a spectrometer with a maximum length of 15 metres in a dedicated external building. It will be possible to rotate the spectrometer around the sample in the horizontal scattering plane, up to a maximum scattering angle of 150°. The end station will accommodate a liquid helium cooled sample manipulator with six degrees of freedom (x, y, z, polar, azimuth, tilt), enabling the sample temperature to be controlled between 8 K and 300 K in an ultrahigh vacuum of better than 10-9 mbar. A sample load-lock, storage and preparation chamber will be provided on Day 1, with a high magnetic field setup planned as a future upgrade. User operation is expected to begin in spring 2017.
Energy range (eV), Resolving Power (E/ΔE), Photon flux at the sample (ph/s), Beam size at the sample (FWHM), Photon polarization