| Autor: |
Pan X; Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany., Šmíd M; Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany., Štefaníková R; Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany., Donat F; Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany., Baehtz C; Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany., Burian T; Institute of Physics of the ASCR, 18221 Prague, Czech Republic., Cerantola V; European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany., Gaus L; Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany., Humphries OS; European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany., Hajkova V; Institute of Physics of the ASCR, 18221 Prague, Czech Republic., Juha L; Institute of Physics of the ASCR, 18221 Prague, Czech Republic., Krupka M; Institute of Physics of the ASCR, 18221 Prague, Czech Republic., Kozlová M; Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany., Konopkova Z; European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany., Preston TR; European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany., Wollenweber L; European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany., Zastrau U; European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany., Falk K; Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany. |
| Abstrakt: |
A multipurpose imaging x-ray crystal spectrometer is developed for the high energy density instrument of the European X-ray Free Electron Laser. The spectrometer is designed to measure x rays in the energy range of 4-10 keV, providing high-resolution, spatially resolved spectral measurements. A toroidally bent germanium (Ge) crystal is used, allowing x-ray diffraction from the crystal to image along a one-dimensional spatial profile while spectrally resolving along the other. A detailed geometrical analysis is performed to determine the curvature of the crystal. The theoretical performance of the spectrometer in various configurations is calculated by ray-tracing simulations. The key properties of the spectrometer, including the spectral and spatial resolution, are demonstrated experimentally on different platforms. Experimental results prove that this Ge spectrometer is a powerful tool for spatially resolved measurements of x-ray emission, scattering, or absorption spectra in high energy density physics. |
