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PSICHÉ

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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 by absorption contrast at high energy (20-50 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 (15-100keV). 
To perform the various experiments planned on the beamline, 4 different operating modes will be implemented.

  1. White beam mode : energy dispersive x-ray diffraction 
  2. Focused monochromatic mode : angular dispersive x-ray diffraction 
  3. Unfocused monochromatic mode : high energy resolution tomography 
  4. Unfocused monochromatic mode : high flux tomography

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

Beamline newsAll PSICHÉ news
Publié le 02.05.2018
Partial melting of the Earth's mantle would have delayed the establishment of plate tectonics for 2.5 billion years
During the Precambrian period, the transition between the Archean (-4 billion to -2.5 billion years) and Proterozoic eons (-2.5 billion to 541 million years) coincides with the beginning of plate tectonics, as known today. Despite its importance, the underlying cause of this major geological transition remains unknown. Researchers from the Magmas & Volcanoes Laboratory...
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Publié le 11.15.2017
Solidification of an Al-Cu Alloy (4 w% Cu) using X-ray Microtomography
Case study carried out with the start-up 3Dmagination  Improvements in the quality of X-ray beams, detectors and reconstruction algorithms, as well as the development of in situ sample environments enable the study of the micro-structure of materials subjected to extreme and evolving conditions  (e.g. mechanical, thermal). This is performed non destructively using...
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Team

CHAUVIGNE
CHAUVIGNE Paul
01 69 35 97 49
paul.chauvigne@synchrotron-soleil.fr
HENRY
HENRY Laura
01 69 35 94 45
laura.henry@synchrotron-soleil.fr
OKUMKO
OKUMKO Victor
01 69 35 97 96
victor.okumko@synchrotron-soleil.fr
PERRUCHON-MONGE
PERRUCHON-MONGE Lola
01 69 35 96 22
lola.perruchon-monge@synchrotron-soleil.fr
* Prestataire extérieur, intérimaire ou collaborateur
VideosAll Psyche videos
Publié le 08.01.2016
Drought means stress

Trees are suffering from global warming. Due to droughts that are too intense and too frequent, entire forest massifs are dying. Many coniferous trees could be under the spotlight. To identify the most endangered species, scientists from INRA came at SOLEIL to detect air bubbles within the vessels transporting water in the plant.

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Publié le 12.14.2015
The lights of SOLEIL

What lights are used at SOLEIL? Why such a diversity? Find some answers in this illustrated video, very accessible and didactic.

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Technical data

Energy range

15-100 keV for white beam (low energy part is filtered) 
15-50 keV for monochromatic beam 
Energy Resolution (ΔE/E)

∆E/E ~10-2 for mode 1 (Ge detector resolution) and mode 4 (Double Multilayer Monochromator) 
∆E/E ~10-3 for mode 2 and 4 (Double Crystal Monochromator)
Source

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

- Focusing vertical mirror 
- Double Crystal Monochromator (Si111 and saggital focusing Si 311) 
- Two focusing mirrors in KB geometry 
- Double Multilayer Monochromator
Sample Environment

- Diamond anvil cells 
- Paris-Edinburgh cell 
- Large Volume multianvil cell 
- Raman set-up for in situ measurements 
- Pressure measurement set-up
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 
- DMM : 3.5 1015 ph/s in a 15 x 3 mm2 spot
Detectors

- Ge solid state detector 
- Image plate MARE Research 
- Flat panel

Scientific Opportunities

X-ray diffraction: Materials under extreme conditions Geosciences (earth structure), Physic (molecular solids, functional materials, highly correlated electrons materials…), chemistry (synthesis of hard material) Biology (folding and unfolding of proteins)
Tomography  Metallurgy, metallic alloys under strain (including under high pressure)

 

Downloads

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