| 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) |