Parameters Properties of EIGER
| component | properties | value |
|---|---|---|
| monochromator | double focusing 15 x 9 pieces PG 20 x 20 mm2 each |
alignment: < +-0.1° 30` mosaicity |
| virtual source | 10mm < width <40mm | |
| shielding | non-magnetic | |
| beam size at sample | double focusing condition | 40 x 40 mm |
| filter | PG (37 or 70mm) | |
| analyzer | PG horizontal focusing | |
| detector | 3He-tube | |
| collimation | 20`,40` or 80` available | |
| elastic resolution | at kf = 2.66 Å-1 | 0.66 meV |
| energy transfers | at kf = 2.66 Å-1 | -11meV ≤ EN ≤ 60meV (accessible) -10meV ≤ EN ≤ 45meV (recommended) |