Figure 3
Schematic diagram of the crystal used in this paper. (a) Top view. (b) Edge view, looking downstream. Note that, unlike previous crystals, this one has a flat top for easier fabrication. The dotted oval indicates the approximate position of the beam footprint for the thin-crystal measurements, and the dark filled ovals indicate the beam footprint positions for the thick-crystal measurements. The thinnest portion of the thin web is ∼1.2 mm. As in previous crystals, sealing is accomplished with indium foils and metal c-rings. The drawing is approximately to scale. |