Hard X-Ray Double Crystal Monochromator - DCM
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Specifications
| Axis Name | Drive Range | Repeatability | Minimum Feed Stroke | Encoder Resolution | Drive System | |
|---|---|---|---|---|---|---|
| Main Axis | Bragg angle θ (Stage rotation angle) | 3°-32° (-1-32 deg) | 10 µrad | 1 µrad | 1 µrad | Stepper Motor (Air) |
| First Crystal | Roll TX1 | ±0.5 deg | 10 µrad | 5 µrad | - | Motor (Vacuum) |
| Lateral translation X1 | ±5 mm | 50 µm | 5 µm | - | Motor (Vacuum) | |
| Normal translation to crystal surface ZZ1 | ±1 mm | 10 µm | 5 µm | - | Motor (Vacuum) | |
| Pitch adjustment Δθ1 | ±0.5 deg | 0.25 µrad | 0.05 µrad | - | Motor (Vacuum) Piezo* | |
| Vertical translation Z1 | -4-1 mm | 10 µm | 0.1 µm | - | Motor (Vacuum) | |
| Longtitudinal translation Y1 | 270 mm | 10 µm | 1 µm | 0.1 mm | Motor (Vacuum) | |
| Second Crystal | Roll TX2 | ±0.5 deg | 10 µrad | 0.5 µrad | - | Motor (Vacuum) |
| Lateral translation X2 | ±5 mm | 50 µm | 1 µm | - | Motor (Vacuum) | |
| Normal translation to crystal surface ZZ2 | ±1 mm | 10 µm | 1 µm | - | Motor (Vacuum) | |
| Pitch adjustment Δθ2 | ±0.5 deg | 0.25 µrad | 0.05 µrad | - | Motor (Vacuum) | |
| Mount | BX | ±5 mm | 0.2 mm | 1/20 mm | - | Manual (Air) |
| BZ | ±5 mm | 0.2 mm | 1/20 mm | - | Manual (Air) |
* Piezo (option): ±30 arcsec