KMC-2 Diffraction

KMC-2 Diffraction


Reflectometry, Single Crystal Diffraction, Crystallography (material sciences), Surface Diffraction, Powder Diffraction, WAXS

Beamline data
Energy range 4 - 15 keV
Energy resolution 1/4000
Flux dipole, 1e7 - 1e10
Polarisation linear horizontal
Focus size (hor. x vert.) 250 μm x 600 μm (4.8 μm x 4.8 μm with capillary optics)
Phone +49 30 8062 14623
More details KMC-2
Station data
Temperature range 20-1000 °C
Pressure Range Check text. For more details contact the station manager.
Detector Scintillator, Area (Bruker Vantec)
Manipulators Huber 6-circle goniometer
Sample holder compatibility Check text. For more details contact the station manager.
Remote Access Yes. Both control stations of KMC-2 diffraction can be operated remotely using NoMachine. The beamshutter still has to be opened manually.

The instrument Diffraction is a 6-circle goniometer in psi-geometry. The sample is mounted on a motorized stage that allows movement in all directions. Two detectors are available: A scintillation detector (Cyberstar) and an area detector (Bruker Vantec). 2Θ angles up to 140° are accessible with the area detector. The instrument is located at the KMC-2 beamline, which provides X-ray radiation with very stable energies in the range between 4 and 14 keV. This combination covers most scattering requirements.

Modular Sample Environment available at KMC-2 include:

  • TMP-HTF-VAC-XRD , a custom-build Be-domed furnace with in-build turbopump for experiments up to 900 °C in ultra-high vacuum (10-6 mbar); this furnace is restricted to Θ-2Θ geometry. 
  • TMP_HTF_IG_XRD , Anton Paar DHS 1100 furnace for experiments up to 1100 °C in air, inert gas or mild vacuum (10 mbar) without limitations on the movement of the goniometer.
  • TMP-CCR-HXR,  closed cycle refrigerator for low-temperature experiments (15 - 450 K) and controlled gas loading up to 150 kPa.
  • TMP-CJ-XRD, cryo-gas-jet for investigations of small samples at low temperatures (20 - 300 K) in controlled gas atmospheres up to 1000 kPa.
  • TMP-SGJ-XRD, capillary system for experiments with small sample volumes at high temperatures (240 - 850 K) and controlled atmospheres up to 1000 kPa.

Instrument applications

  • Grazing incidence diffraction (GID)
  • Reciprocal space mapping of single crystal Bragg reflections
  • Diffuse scattering
  • Powder diffraction
  • Anomalous diffraction
  • Reflectometry