Figure 1.

IRTT experimental setup, similar to that in Liebi et al. (2015 ▸), Schaff et al. (2015 ▸). The sample is raster-scanned by a pencil-beam for different rotation and tilt angles α and β. Best practice is to distribute the angles α and β homogeneously on the hemisphere of sample orientations (Liebi et al., 2018 ▸), as shown on the inset sphere. The red arrow on the detector indicates a q vector in reciprocal space, and the two red circles enclose an example q range.