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Crisp technical information
13 Aug 2009
Technical information for Crisp
0.5 - 6.5 Å at 50 Hz, 0.5 - 13.0 Å at 25 Hz
Momentum transfer, Q
Minimum/maximum values depend on the incident angle; Typical values extending from 0.006 - 1.0 Å^-1 (Upper value is only limited by the loss of information in the reflectivity associated with the sample background.)
ISIS Beam line
N4, viewing the 25 K liquid hydrogen (lower) moderator.
The vibration damped concrete pillar is situated at 10.25m from the moderator, allowing a full range of sample environment equipment
40mm (H)× 0.1 to 10mm (V)
Single He³ gas detector or one dimensional position sensitive detector (<1mm resolution) for off-specular scattering studies.
Primary Flight Path
Wavelength limiting chopper at 6m, nimonic (T0) chopper for background suppression, variable coarse and defining fine collimating slits, frame overlap mirrors (removes wavelengths greater than 13Å). Polarising neutron mirror and guide field option.
Alpha 500 Workstaion
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