Diffractometers

• High Resolution Diffractometer

The high resolution diffractometer is located at 28 m from the source. The modest demagnification of 2.5:1 guarantees a highly parallel beam, a prerequisite of large unit-cell protein crystallography. The main components of the device are a high precision air-bearing rotation axis and an A-frame for detector positioning.

• Resolutions limits for the mar225 CCD detector at Se K-edge

High resolution limit (2 θ = 90 °): 0.7 Å
High resolution limit (Distance sample-detector = 1250 mm): 5.5 Å
Unit cell limit (Distance sample-detector = 1250 mm): 2300 Å
Low resolution limit (Distance sample-beamstop = 150 mm): 400 Å


• µ-diffractometer

The MAATEL μm-diffractometer is available for user experiments.
The sphere of confusion is below 2 µm and the size of the focussed beam is 25 μm x 5 μm. MAD experiments are possible.
The changeover between the diffractometers takes half an hour and it is possible to use both devices within one shift.