☢️ X-Ray Beamline: Bragg Monochromator, Mirror Cut-off and Fixed-Exit Geometry (2D side view)

Side view of a synchrotron X-ray beamline with a grazing-incidence mirror and a two-crystal monochromator. Set the photon energy, the crystal spacing, the divergence and the mirror, and read the Bragg angle, the energy bandwidth, the mirror cut-off that removes harmonics and the crystal gap that keeps the exit beam fixed. The 3D lab has the same sliders without units; this page gives them real units, with four in-page numerical checks.