Information valid for the user call 7 August – 7 September 2017

The CXDI experimental station is open for user operation since May 2017, but all planned capabilities are not yet implemented or fully functional. Note, the tomography experimental station is not available in this call. For the operation period November 2017 – July 2018 the following capabilities will be provided:

  • Beam size of the nano-focus is diffraction limited. Measured beam sizes 9.5 keV – 95 nm, 13.2 keV 70 nm. Expected beam sizes 200 nm (5KeV) – 50 nm (25 keV)
  • Sample mount is in air with 100 mm working distance.
  • Other sample environments may be accommodated if it is provided by the user group and agreed with the beamline staff. Please contact us to discuss possibilities before submitting application.
  • Goniometer with two rotation axes (phi and chi).
  • A 3-axes piezo scanner with 100x100x100 μm³ range. Coarse motor-stages for sample alignment and image stitching.
  • A Quantum Detector – Merlin pixel detector with 512×512 pixels, 55×55 μm² pixel size. The detector is mounted on a robot for positioning it in Bragg conditions. The detector positioning is not yet integrated into the control system. Positioning will be done by manually commanding the robot. Radial distance 0.2 – 1 meter.
  • A 1-megapixel photon counting detector, Pilatus 172×172 µm² pixel size, will be used for forward scattering detection. 0.5 – 4 meter detector distance.
  • A 3-element Germanium X-ray fluorescence detector with Quantum Detectors – Xpress3 pulse processor.
  • Optical microscope and cameras for sample inspection at measurement position
  • Off-line optical microscopes for inspection. High resolution microscope (Olympus BX53M) and long distance stereo microscope (Olympus SZX16).
  • Note, the goniometer is not designed to provide tomographic capabilities. The experimental station will allow 2D-scanning at fixed sample rotation as well as 2D-scanning with Bragg angle scan in few degrees range.
  • The standard mount for sample is adopted from the cSAXS – OMNY experimental station at Swiss Light Source. The sample pin for 2D-scanning is shown in the image below. Samples can be mounted on silicon nitride membranes or other supports fitting this sample pin. Other options may be possible after discussion with beamline staff.

 

Sample pin type A for the CXDI experimental station