Compound focusing for hard-x-ray inelastic scattering

摘要

A bent cylindrical mirror and short (150 and 200 mm) elliptically polished Kirkpatrick-Baez (KB) mirrors are used to efficiently focus the entire beam from an insertion device for flux-limited experiments at energies up to 22 keV. Spots of ～50 × 70 μm~2 (cylinder only) or ～16 microns diameter (KB and cylinder) may be selected, without changing the sample position. The cylinder has nearly 100% throughput, while the KB has losses of about 50% due to system constraints. Design considerations and performance will be discussed.