Laue crystal alignment cameras
We have developed various Laue crystal alignment cameras for x-rays to replace the old Polaroid Laue camera, and similar cameras might be used with a neutron beam. A finely collimated white beam produces a number of "Bragg spots" from a single crystal, and by measuring the positions of these spots the crystal orientation can be determined. Greater precision is obtained with backscattering, but the intensities are much weaker, especially for x-rays because of the scattering "form-factor".