Table 2. Summary of the January 2019 results at 7.35 keV.
For 8-ID-I, N = 3.5 because we used three lenses with R = 0.1 mm and one lens with R = 0.2 mm. The ideal image distances i are nearly all larger than the sample-to-lens distance R e − R l. The out-of-focus beam waist estimates W H and W V come from equation (14).
| Beamline | 8-ID-E | 8-ID-I |
|---|---|---|
| Lens slit (H × V) (µm) | 150 × 150 | 100 × 150 |
| R e − R l (m) | 1.645 | 2.29 |
| R (mm) | 0.1 | 0.1 |
| N | 5 | 3.5 |
| E (keV) | 7.35 | 7.35 |
| f (m) | 1.583 | 2.261 |
| R l (m) | 53.2 | 66.9 |
| i (m) (H × V) | 1.685 × 1.631 | 2.40 × 2.34 |
| w H/w V (µm) | 3.0 × 1.8 | 4.1 × 2.4 |
| W H/W V (µm) | 4.7 × 2.2 | 6.3 × 4.1 |
| Measured focal spot size (H × V) FWHM (µm) | 5.0 × 4.5 | 4.7 × 3.7 |
| Area detector resolution (µrad) | 18 | 14 |
| Speckle contrast, β | 0.18 | 0.3 |
| Partially coherent flux (photons s−1) | 5.5 × 109 | 1.5 × 1010 |
| Horizontal monochromator | Si(220) single bounce | Double-bounce Ge(111) |