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PSICHÉ (Pression Structure Imagerie par Contraste à Haute Énergie) : this beamline is dedicated to x-ray diffraction under extreme conditions (pressure-temperature) and to tomography at high energy (20-120 keV). 

The PSICHÉ beamline is installed on a short straight section of the SOLEIL (I03c), The source is a under vacuum multi-pole wiggler (2.1 T) which delivers a white beam with a large photon energy range (15-100+ keV). 
To perform the various experiments performed on the beamline, 4 different operating modes are available.

  1. White beam mode : energy dispersive x-ray diffraction 
  2. Focused monochromatic mode : angular dispersive x-ray diffraction 
  3. Polychromatic imaging mode : fast or high-energy pink beam tomography
  4. Monochromatic imaging mode : monochromatic beam tomography

The beamline is divided in two hutches. The first hutch accomodates the optics but is also used for the white beam experiments (modes 1 and 3). The second one is the monochromatic experiment hutch (modes 2 and 4).


KING Andrew
Beamline Scientist
Beamline Engineer Assistant
ITIE Jean-Paul

Technical data

Energy range

15-100 keV for white beam (low energy part is filtered) 
15-50 keV for monochromatic beam 
25-120 keV for pink beam imaging

Energy Resolution (ΔE/E)

∆E/E ~10-3 for monochromatic beam modes (Double Crystal Monochromator)
∆E/E ~10-2 for energy dispersive diffraction (Ge detector resolution)
∆E/E ~10-1 for pink beam imaging modes


Under vacuum multipole wiggler: 2.1 T, period 50 mm, 38 periods


- Focusing vertical mirror 
- Double Crystal Monochromator (Si111 and saggital focusing Si 311) 
- Two focusing mirrors in KB geometry 
- Multiple pink beam filter configurations

Sample Environment

- Diamond anvil cells 
- Paris-Edinburgh cell (4 column and UToPEC versions)
- Large Volume multianvil cell 
- Raman set-up for in situ measurements 
- Pressure measurement set-up
- Tomography furnace (<1400C, collaboration 3DMagination/Centre des Materiaux)


Flux on sample

- White beam :1-8 108 ph/s/0.1% E in a 10 μm x10 μm hole 
- DCM 311: at 30 keV 4 1011 ph/s in 100 μm x100 μm spot , 1 1010 ph/s in 10 μm x10 μm spot after KB 
- DCM 111: at 30 keV 1.4 1013 ph/s in a 16.8 x 5.9 mm2 spot 
- Pink beam :  >2 1015 ph/mm2/s in a 11 x 3 mm2 beam


- Pilatus CdTe 2M
- Perkin-Elmer (now Varex) flat panel

Tomography detectors

Lens coupled scintillator detectors, based on the following cameras:

- Hamamatsu ORCA Flash4.0 v2 and v3 for imaging
- Hamamatsu ORCA Lightning 4602 x 2596 pixels
- PCO Dimax HS4 (loan from ANATOMIX beamline)

Pixel sizes from 0.13 to 10 microns.

Scientific Opportunities

X-ray diffraction: Materials under extreme conditions Geosciences (earth structure), Physics (molecular solids, functional materials, highly correlated electrons materials…), chemistry (synthesis of hard material) Biology (folding and unfolding of proteins)
Tomography  Materials science, in-situ experiments including under high pressure, cultural heritage, biology and health, ...