SAND - Small-Angle Neutron Diffractometer

Instrument Scientist - P. Thiyagarajan (Thiyaga)
Engineering Associate - Denis G. Wozniak
Post Docs - Sai Venkatesh Pingali

Click Here for the SAND Run Schedule

SAND is a time-of-flight Small-Angle Neutron Diffractometer at the IPNS facility at Argonne National Laboratory. This instrument is an improved version of SASI, in which a larger area detector, a wide angle Linear Position-Sensitive Detector bank, and larger sample-to-detector distance are used. This enables SAND to obtain higher quality data in a much wider Q range (0.0035 to 2 Å^-1) in a single measurement. Currently, the LPSD bank is not yet installed which restricts the Q range into 0.0035 to 0.6 Å^-1. As an example, data for a phase separated paraffin mixture are shown below.

At the BESSRC CAT of the Advanced Photon Source there is a SAXS Instrument that can do both time-resolved SAXS and Anomalous SAXS with a Q range of 0.003 - 0.8 inverse Angstroms. Furthermore, a SAXS facility is available on a rotating anode x-ray source which can access the Q region of 0.01 - 0.2 inverse Angstroms. This uses 20 cm x 20 cm gas detector. For further information, contact thiyaga@anl.gov.