D22 - a small-angle neutron scattering diffractometer
Small-angle neutron scattering (SANS) is a technique that measures the deviation at small angles (much less than one degree to several degrees) of a neutron beam due to structures of small size in the sample. "Small" means dimensions of a few tenths to about 100 nanometres, such as clusters in alloys, polymers, or biological macromolecules. In general, these structures are disordered.
Study of nanoscale materials, taking advantage of the sensitivity of neutrons towards isotopes and magnetic spin direction.
The fast SANS detector
D22 possesses the largest area multidetector (3He) of all small-angle scattering instruments. This real-time multitube detector is capable of counting more than 5 MHz of neutrons on the whole surface rather than the 50 kHz of the classical ones.