Instrument Characteristics
| Source Frequency | 10 – 30 Hz |
| Moderator | Coupled < 20 K solid methane |
| Wavelength Range | 4 Å - 20 Å |
| Wavelength Resolution (Δλ/λ) | ~ 11% (FWHM) |
| Source-to-Sample Distance | 8.55 m (fixed) |
| Sample-to-Detector Distance | 1.1 m to 4.2 m (variable) |
| θ-Resolution (Δθ/θ) | 3 - 48% (FWHM) |
| Collimation | Circular pinhole collimation |
| Beam Diameter at Moderator | 10 cm |
| Sample Aperture Diameter | 1.5 cm, 2.0 cm, 2.5 cm (selectable) |
| Sample Size | 0 to 25 mm diameter |
| Area Detector (3He 2D ORDELA) | |
| Active Volume | 64 x 64 cm2, 4.4 cm thick |
| Pixel Size | 1 x 1 cm2 |
| Detector Efficiency | 71% for 5 Å neutrons, 52% for 3 Å neutrons |
| Count-Rate Capability | 104 n/s for 10% coincidence losses (105 n/s max.) |
| Background | ~ 0.5 Hz on whole 2D detector |
| Q-Range | 0.005 Å-1 to 0.5 Å-1 |
| Integrated Flux on Sample | 2*104 n/cm2/s (at full accelerator power of 13 kW) |
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