A vacuum chamber for low background diffraction experiments

We developed a small vacuum chamber for very low background single crystal diffraction experiments. The chamber has been designed for a large Eulerian cradle. The φ and X rotations are not limited by the chamber, while the ω rotation is limited. to a cone of 20° opening angle. A crucial part of the design is the position of the beam stop inside the vacuum, eliminating any scattering at the exit windows. The chamber effectively eliminates any air scattering of the primary beam, creating a very low background for single crystal diffraction experiments.