High-energy-resolution inelastic X-ray scattering spectrometer at beamline 30-ID of the Advanced Photon Source
Ayman Said, Harald Sinn, T. S. Toellner, E. Ercan, T. Gög, Bogdan M. Leu, Sunil Bean, Ahmet Alatas
Abstract
Inelastic X-ray scattering is a powerful and versatile technique for studying lattice dynamics in materials of scientific and technological importance. In this article, the design and capabilities of the momentum-resolved high-energy-resolution inelastic X-ray spectrometer (HERIX) at beamline 30-ID of the Advanced Photon Source are reported. The instrument operates at 23.724 keV and has an energy resolution of 1.3–1.7 meV. It can accommodate momentum transfers of up to 72 nm −1 , at a typical X-ray flux of 4.5 × 10 9 photons s −1 meV −1 at the sample. A suite of in situ sample environments are provided, including high pressure, static magnetic fields and uniaxial strains, all at high or cryogenic temperatures.