SixS (Surfaces interfaces x-ray Scattering) is a wide-energy range (5 -20 keV) beamline dedicated to structural studies of interfaces (gas-solid, solid-solid or solid-liquid), as well as nano-objects.
SixS (Surfaces interfaces X-ray Scattering) is a wide-energy range (5 -20 keV) beamline dedicated to structural characterization of surfaces, interfaces (solid-solid or solid-liquid), as well as nano-objects in controlled environments by means of surface-sensitive x-ray scattering techniques, such as:
Grazing Incidence X-ray Diffraction (GIXD)
Crystal Truncation Rods (CTR)
Grazing Incidence Small Angle X-ray Scattering (GISAXS)
Anomalous Surface X-ray Scattering
X-ray Reflectivity (XRR)
Coherent Scattering
Magnetic Surface X-ray Scattering (in the near future)
Experimental end-stations:
MED: a multi-environment diffractometer is available which can accommodate various sample environments, such as high-pressure reactivity chambers, electrochemical cells, Langmuir troughs. It allows for scatvertical and horizontal diffraction geometry for surface / interface diffraction.
UHV: the diffractometer is coupled to stationary assembly of UHV chambers (currently being installed) ; it is a unique design, and consists of an assembly of three chambers equipped with the standard UHV tools (evaporators, ion-guns, etc.) and specific instruments (Scanning Tunneling Microscope (STM), Low Energy Electron Diffraction (LEED), Auger Electron Spectroscopy (AES).
Team
Technical Data
5 keV - 20 keV
E/ΔE ~ 10-4 à 20 keV
In-vacuum U20 undulator.
Source Size (sigma, μm): 388 (H) x 8.1 (V)
Source Divergence (sigma, μrad): 14.5 (H) x 4.6 (V)
Diaphragm
Quarter-wave plate (to be installed)
Fixed exit DCM Si(111)
M1, M2 mirror for harmonics rejection and vertical focussing
M3A mirror for horizontal focussing on the MED end-station (to be installed)
M3B for horizontal focussing on the UHV end-station
Two experimental end-stations
MED: multi-environment diffractometer
UHV: diffractometer coupled to an UHV vacuum chamber
MED: 40(H) x 25(V) µm2
UHV: 30(H) x 30(V) µm2
MED: 600 µrad (H) x 120 µrad (V)
UHV: 600 µrad (H) x 60 µrad (V)
4 x 1013 ph/s @ 6 keV
3 x 1012 ph/s @ 15 keV
linear
Scientific opportunities
To be filled