Specifications

• Beam line: CG3 (cold neutrons) 

• Position: Upstream of PLATYPUS reflectometer 

• Estimated peak beam flux at sample: ø_B = 700,000 n cm^-2 s^-1 (30x higher compared to NIST BT-5 instrument)

• Solid source angle: ΔΩ_Source = 8.3·10^-7 sr

• Premonochromators: Two bent vertically focusing, low-mosaic crystals, Si(111) and Si(311), fixed Bragg angle of θ_Bragg = 45°

• Wavelengths: λ_Si(111) = 4.43 Å and λ_Si(311) = 2.32 Å to accommodate for weakly and strongly scattering samples

• Wavelength resolution: Δλ/λ = 4%

• Monochromator and analyser channel-cut perfect crystals: Si(111) and Si(311), interchangeable

• Minimum momentum transfer: q_min = 3·10^-5 Å^-1 

• Optional: Bent Si(111) analyser crystal for high intensity/low resolution measurements, e.g. for kinetics