Figure 6
(a) The calculated flux transmission through the DCD as a function of energy at φ = 0. For silicon the transmission is only 5–10% whereas this can be significantly improved by replacing the DCD crystals. (b) Maximum flux before the DCD, at a ring current of 300 mA. Collimation and windows etc. can reduce this by up to half, which, for example, gives a flux at the sample position of ∼2 × 1012 photons s−1 (0.1% bandwidth)−1 (at 12.5 keV and φ = 0). |