Table 3. Geometry parameters before and after the fittings.
〈D spot〉 is computed from ∼2000 spot pairs and the unit is in detector pixels, i.e. 24 µm pixel−1 for CCD and 127 µm pixel−1 for flat panel.
| Type | Fitting | L ss (mm) | L sd (mm) | dety0 (mm) | detz0 (mm) | φ x (°) | φ y (°) | φ z (°) | 〈D spot〉 (pixels) |
|---|---|---|---|---|---|---|---|---|---|
| CCD | Before | 9.16 | 55.35 | −0.35 | 1.65 | 0.64 | 0.36 | 0.53 | 6.8 |
| After | 9.21 | 55.33 | −0.40 | 1.52 | −0.02 | −0.21 | −0.35 | 5.8 | |
| Flat panel | Before | 9.16 | 224.59 | 0.95 | −0.65 | 0.20 | 0.23 | 0.24 | 6.4 |
| After | 9.04 | 224.73 | 0.77 | −0.94 | 0.18 | −0.15 | 0.57 | 5.7 | |