Author: Lu, W.
Paper Title Page
MOPE22 Mechanical Design of the MID Split-and-Delay Line at the European XFEL 50
 
  • B. Friedrich, S. Eisebitt, T. Noll
    MBI, Berlin, Germany
  • S. Eisebitt, B. Friedrich
    Technische Universität Berlin, Berlin, Germany
  • W. Lu, T. Roth
    European XFEL, Schenefeld, Germany
  • A. Madsen
    XFEL. EU, Hamburg, Germany
  
  A new split-and-delay line (SDL) is under development for the Materials Imaging and Dynamics (MID) end station at the European XFEL.* The device utilises Bragg reflection to provide pairs of X-ray pulses with an energy of (5 - 10) keV and a continuously tunable time delay of (-10 - 800) ps - thus allowing zero-crossing of the time delay. The mechanical concept features separate positioning stages for each optical element. Those are based on a serial combination of coarse motion axes and a fine alignment 6 DoF Cartesian parallel kinematics**. That allows to meet the contradictory demands of a fast long-range travel of up to 1000 mm and in the same time a precise alignment with a resolution in the nanometer range. Multiple laser interferometers monitor the position of the optical elements and allow an active control of their alignment. All optical elements and mechanics will be installed inside an UHV chamber, including the interferometer and about 100 stepper motors. With this paper we present the mechanical design for the SDL. It will additionally show the design of a prototype of a positioning stage which allows extensive testing of the implemented concepts and techniques.
* A. Madsen et al., Technical Design Report: Scientific Instrument MID, 2013.
** T. Noll et al., Parallel kinematics for nanoscale Cartesian motions, Precision Engineering, vol. 33, no. 3, 2009. 		 
poster icon Poster MOPE22 [4.691 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE22  
About • paper received ※ 11 September 2016       paper accepted ※ 14 September 2016       issue date ※ 22 June 2017  
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WEPE42
 The MID Instrument at the European XFEL  
 
  • G. Ansaldi, W. Lu, T. Roth, A. Schmidt
    European XFEL, Schenefeld, Germany
  • A. Madsen
    XFEL. EU, Hamburg, Germany
  • M. Magnin-Mattenet
    ESRF, Grenoble, France
  
  The Materials Imaging and Dynamics (MID) instrument of the European XFEL facility will provide unique capabilities in materials imaging and dynamics experiments, with particular focus on the application of coherent X-ray scattering and diffraction techniques. Coherent diffractive imaging (CDI) and X-ray photon correlation spectroscopy (XPCS) experiments are at the heart of the activities planned at the MID station, but also time-resolved scattering and imaging studies can be foreseen, taking advantage of the time structure and high flux of the X-ray free-electron laser (XFEL) beam. Here we present the technical realizations of the devices inside the Optics and Experimental Hutches. SAXS, WAXS and large field of view configurations are shown.  
poster icon Poster WEPE42 [6.374 MB]  
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