Laboratoire Léon Brillouin

UMR12 CEA-CNRS

Bât. 563 CEA Saclay

91191 Gif sur Yvette Cedex

France

llb-sec@cea.fr

Instruments

THE LLB-ORPHEE NEUTRON SCATTERING AND IMAGING INSTRUMENTS

15 world-class instruments, installed on the neutron beams of reactor Orphee, are available to users. A detailed description of these instruments is given in the blue book "Equipements Experimentaux" available on request at the Scientific Secretary of the LLB.

Through our beam time call, french users may request access to 4 French CRG installed at the ILL and not operated by the LLB :

List of the LLB instruments on the Orphée reactor in Saclay and operated by the LLB

Powder diffractometers

3T2"Thermal neutrons" 2-axis (20 detectors) high resolution, mainly for nuclear structure determination.
G4.1"Cold neutrons" 2-axis (multidetector 800 cells) high flux, mainly for magnetic structure determination
G6.1"Cold neutrons" 2-axis (low resolution, only for friendly users)
PHR-G44"Cold neutrons" 2-axis (7x10 detectors) high resolution, for structure determination on polycrystalline samples with large unit cell.

Single crystal diffractometers

5C1"Hot neutrons" 2-axis with lifting arm, polarized neutrons, magnetic field (8 Tesla) for spin-density maps determination
5C2"Hot neutrons" 4-circle for nuclear structure determination.
6T2"Thermal neutrons" 2-axis, lifting arm and 4-circle, mainly for magnetic structure determination. 12 Tesla magnetic field available.

Diffuse scattering instruments

7C2"Hot neutrons" 2-axis (multidetector 640 cells) for local order studies in liquid or amorphous systems. Cryostat and furnace available (1.2K to 1300°C), friendly users only.

Small-angle scattering instruments

Paxy"Cold neutrons" (X-Y detector, 128x128 cells) for study of large scale structures (10 to 500 Å) in anisotropic systems (polymers under stress, metallurgical samples, vortex in superconductors).
Pa20"Cold neutrons" (X-Y detector, 128x128 cells) for study of large scale structures (10 to 500 Å) in anisotropic systems (polymers under stress, metallurgical samples, vortex in superconductors).
TPA Very Small Angle Neutrons Scattering spectrometer, friendly users only.

Diffractometers for material science studies

6T1"Thermal neutrons" 4-circle for texture determination, friendly users only.

Reflectometers

Hermes"Cold neutrons" reflectometer operating in time-of-flight ex-Eros, mode for multipurpose surface studies.
Prism"Cold neutrons" reflectometer with polarized neutrons and polarization analysis for the study of magnetic layers, friendly users only.

Triple-axis instruments

1T"Thermal neutrons" high-flux 3-axis instrument with focussing monochromator and analyser, mainly devoted to phonon dispersion curves measurements. Very high pressure cell (100 Kbar) available.
2T"Thermal neutrons" high-flux spectrometer with focussing monochromator and analyser, mainly devoted to spin-waves and magnetic excitations studies (1.5 to 80 meV).
4F1
4F2
"Cold neutrons" high flux 3-axis instruments with double monochromator and analyzer, mainly devoted to the study of low-energy (15µeV to 4meV) magnetic excitations. Polarized neutrons and polarization analysis option available.

Quasi-elastic instruments

Muses"Cold neutrons", high resolution and high flux spin-echo instrument. It can study, in a large Q range, slow dynamics of large molecules in biology or long relaxation times like in glassy transition (Fourier times ~ 20ns)

Neutron Radiography and irradiation

ImagineImaging technique for soft matter.
G3.2Irradiation line (on special request).

 

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