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.
- White beam mode : energy dispersive x-ray diffraction
- Focused monochromatic mode : angular dispersive x-ray diffraction
- Polychromatic imaging mode : fast or high-energy pink beam tomography
- 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).
Team
Technical data
15-100 keV for white beam (low energy part is filtered)
15-50 keV for monochromatic beam
25-120 keV for pink beam imaging
∆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
- 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)
- 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
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, ... |
