Abstract
The Materials Imaging and Dynamics (MID) instrument at the European X-ray Free-Electron Laser (EuXFEL) facility is described. EuXFEL is the first hard X-ray free-electron laser operating in the MHz repetition range which provides novel science opportunities. The aim of MID is to enable studies of nano-structured materials, liquids, and soft- and hard-condensed matter using the bright X-ray beams generated by EuXFEL. Particular emphasis is on studies of structure and dynamics in materials by coherent scattering and imaging using hard X-rays. Commission of MID started at the end of 2018 and first experiments were performed in 2019.
Highlights
The Materials Imaging and Dynamics (MID) instrument (Madsen, 2011; Madsen et al, 2013) belongs to the first generation of instruments built at the European X-ray FreeElectron Laser (EuXFEL) facility in Hamburg, Germany (Altarelli, 2015; Tschentscher et al, 2017; Madsen & Sinn, 2017; Weise & Decking, 2017; Decking et al, 2020)
Together with the High Energy Density (HED) instrument, MID receives X-rays from the spontaneous emission (SASE)-2 undulator which is located in the southernmost tunnel of EuXFEL
The MID instrumentation located in the tunnel, the optics hutch (OH), and experiment hutch (EH) are described in detail, see Fig. 1
Summary
The Materials Imaging and Dynamics (MID) instrument (Madsen, 2011; Madsen et al, 2013) belongs to the first generation of instruments built at the European X-ray FreeElectron Laser (EuXFEL) facility in Hamburg, Germany (Altarelli, 2015; Tschentscher et al, 2017; Madsen & Sinn, 2017; Weise & Decking, 2017; Decking et al, 2020). Together with the High Energy Density (HED) instrument, MID receives X-rays from the SASE-2 undulator which is located in the southernmost tunnel of EuXFEL. The angular difference between the two beamlines is $ 0.15 which yields 1.4 m horizontal separation at the end of the tunnel ($ 550 m from M3) This allows installing separate X-ray optics and diagnostics components towards the end of the tunnel without interference between the two beamlines. There are two optical laser hutches (pump–probe laser hutch and instrument laser hutch) and a sample preparation laboratory of relevance for the experiments. These resources are shared between MID and HED. The MID instrumentation located in the tunnel, the OH, and EH are described in detail, see Fig. 1
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