GALAXIES

Beamline overview

U20

Calculated flux :  : 

Measured harmonics and accessible energy range :  : 

DCM

2 x Si (111) pseudo channel cut
Energy range : 2.4 - 12 keV
Calculated resolution after the DCM: 

HRM

- 4 x Si(111) (asymmetry angle, 18°) 

Calculated Resolution : 

M1 collimating mirror

M1 has two different coatings : 
- C for low energy (E < 6 keV) 
- Pd for high energy (E > 6 keV). 
Calculations of the reflectivity curves at 5 mrad : 

M2A,B focusing mirrors

- Si toroidal mirrors with Pd coating
- Serve for focusing the beam onto the HAXPES (M2A) and RIXS (M2B) stations

HAXPES

Specifications

Hemispherical analyzer SCIENTA EW4000
Ec < 12 keV, resolution = 150 meV
Wide angular acceptance +/- 30°
Spot size : 80 x 30 μm2 (H x V)

Sample Environnement

Cryostat 20 K ARS for solid samples
LN2 cooled SCIENTA gas cell

HAXPES layout

The HAXPES station consists in an analysis chamber equiped with a 4-axes manipulator associated to a cryogenic system (20 K) for solid sample and a cell for measurements on gas phase. The analyzer is placed in the horizontal plane, at 90° from the incident beam. A preparation chamber, coupled to the analysis chamber, permits the in-vaccum transfert of samples. The chamber hosts an ion gun, evaporators and a LEED pour sample characterization. 

Sample holder

Standard Omicron-type plate (dimension en mm)

Specific holder for in-situ sample bias

The bias can be controlled by a Keithley 2450 sourcemeter purchased thanks to DIM-OxyMORE

RIXS

Specifications

Newport RIXS spectrometer in Rowland circle geometry (diameter 0.5 to 2 m) 
Energie range : ~4-12 keV
Available techniques : RIXS, NIXS, XES, PFY-XAS
Multianalyzer setup in a 4 x 1 ou 2 x 2 matrix
Spot size : 80 x 30 μm2 (H x V) [mode M2B] or 15 x 15 μm2 (H x V) [mode KB]

Sample Environnement

Diamond anvil cell (DAC)
Cryostat 10 K compatible with DAC

Spectrometer layout

The RIXS spectrometer is composed of two scattering arms working in the horizontal and / or vertical scattering plane, a detector arm and a sample stage.

Available analyzers

Last update : January 2014

(*) the number in parenthesis indicates the order of reflection
(**) example of use
(***) analyzers purchased thanks to DIM-OxyMORE

M2B focusing mirrors

- Si toroidal mirrors with Pd coating
- Serve for focusing the beam onto the HAXPES (M2A) and RIXS (M2B) stations

Please use the following references when using the beamline equipments

Beamline

J.-P. Rueff, J. M. Ablett, D. Céolin, D. Prieur, Th. Moreno, V. Balédent, B. Lassalle, J. E. Rault, M. Simon, and A. Shukla, The galaxies beamline at soleil synchrotron: Inelastic x-ray scattering and photoelectron spectroscopy in the hard x-ray range, J. Synchrotron Rad. 22, 175 (2015).

HAXPES

D. Céolin, J.M. Ablett, D. Prieur, T. Moreno,  J.-P. Rueff, B. Pilette, T. Marchenko, L. Journel, T. Marin, R. Guillemin, and M. Simon, Hard X-ray Photoelectron Spectroscopy on the GALAXIES beamline at the SOLEIL synchrotron, J. Elec. Spect. Relat. Phenom. 190, 188 (2013)

RIXS Multianalyseurs

F. Gélebart, M. Morand, Q. Dermigny, P. Giura, J.-P. Rueff, and A. Shukla, Large Solid Angle Spectrometer for Inelastic X-ray Scattering, AIP Conference Proceedings 879 (2007), no. 1, 1837.

HRM

J.M. Ablett, J.-M. Dubuisson, T. Moreno, D. Céolin, E. Raimon,  D. Prieur, D. Corruble,  J. Coquet, A. Lestrade, C. Bourgoin, and J.-P. Rueff, New Design Concept for a High-Resolution In-Vacuum 4-Bounce Hard X-Ray Monochromator at the GALAXIES Beamline at the SOLEIL Synchrotron, Journal of Physics Conferences Series, 425: art.n° 052007 (2013)