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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 (Surface Interface X-ray Scattering) is a beamline dedicated to the study of X-ray scattering from surfaces and interfaces of hard and soft matter in various environments in the 5-20 keV energy range. To be sensitive to the surface all the studies will be performed in grazing-incidence geometry. The beamline will be equipped with two experimental hutches, which will be dedicated to the study of surfaces, interfaces and nano-objets prepared:

  • in-situ under UHV (Ultra High Vacuum, i.e. 10-10 mbar) conditions. A diffractometer will allow to measure X-ray scattering from samples under UHV;
  • in various environments (catalysis chambers, soft matter, electrochemical cells). A diffractometer coupled with exchangeable chambers will be able to measure X-ray scattering from sample surfaces both in vertical or horizontal geometries.

Grazing Incidence X-ray Diffraction (GIXD), Grazing Incidence Small Angle X-ray Scattering (GISAXS), anomalous surface X-ray scattering, X-Ray Reflectivity (XRR), magnetic surface X-ray scattering and coherent scattering experiments will be performed on both the facilities.


COATI Alessandro
Responsable Ligne De Lumière
RESTA Andrea
Scientifique de Ligne De Lumière
VLAD Alina
Scientifique de Ligne De Lumière
VOISIN Benjamin
Assistant Ingénieur de Ligne De Lumière

Chercheur associé

Yves Garreau


Données techniques

Gamme en énergie

5 keV - 20 keV

Résolution en énergie

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)



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

Environnement échantillon

Two experimental end-stations

MED:  multi-environment diffractometer

UHV: diffractometer coupled to an UHV vacuum chamber

Taille du faisceau

MED: 40(H) x 25(V) µm2

UHV: 30(H) x 30(V) µm2

Divergence faisceau sur échantillon

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

Polarisation du faisceau


Thématiques scientifiques

En construction