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. 2020 Oct 20;27(Pt 6):1528–1538. doi: 10.1107/S1600577520012163

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 eR 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 eR 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)