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SuperADAM (CRG) - ADvanced reflectometer for the Analysis of Materials

A fully redesigned version of the CRG reflectometer ADAM, a angle dispersive wavelength machine. The new instrument will have a higher flux, a new detector and a high flux option and a lower flux option but with an improved Q resolution. It will offers unique possibilities especially for measurements on magnetic samples due to the flexibility of the set-up.

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Description

SuperADAM will be a fully redesigned version of ADAM. This CRG reflectometer for the analysis of materials is an angle dispersive fixed wavelength machine with horizontal scattering geometry. The new instrument will have two operation modes. A high flux option (focussing monochromator made of intercalated graphite), mainly dedicated for soft matter research, and a lower flux option but with an improved Q resolution. The latter will offer unique possibilities especially for measurements on magnetic samples due to the high resolution and the possibility of high polarization and an accurate polarization analysis.

The Ruhr Universität, Bochum and Uppsala University are jointly funding the upgrade.

Instrument team

WILDES Andrew

Scientific project leader

wildes(at)ill.eu

+33 4.76.48.7037/7331


DEVISHVILI Anton

co-responsible

devishvili(at)ill.eu

+33 4 76 20 7981


SUTTON Iain

Technical project leader

sutton(at)ill.eu

+33 (0)4 76 20 7410


Instrument layout

The project in short

High resolution option

The existent monochromator will be used. It is made of pyrolytic graphite with a very low mosaicity (<0.5°), picking up a narrow wavelength band at 4.4 Å and a resolution of 0.6 %. Furthermore a double bouncing Bragg or supermirror filter will suppress the higher harmonic wavelengths by a factor of 104 and polarize (99%) the beam if needed. Subsequently high efficiency flippers and either a solid state analyzer or a 3He cell will provide high sophisticated polarization analysis.

Low resolution option

A new monochromator, made of intercalated graphite, will be used. Due to the higher mosaicity and the focusing, considerably higher flux is expected, resulting in a large dynamical range. In both options a heavily shielded position sensitive detector (300 x 300 mm) will be available, as well as a pencil detector, if needed.

References

  1. A. Wildes, ILL Millennium Programme, 2008.
  2. A. Wildes, ILL Millennium Programme, 2007.
  3. M. Wolff, ILL News 48, 2007.