Speaker
Dr
Andreas Stadler
(FZ Jülich)
Description
The small-angle neutron diffractometer KWS-2, operated by the Jülich Centre of Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), is dedicated to the investigation of mesoscopic multi-scale structures and structural changes due to rapid kinetic processes in soft condensed matter and biophysical systems. Following demands from the user community, it was recently considerably upgraded,1 to boost its performance with respect to the intensity on the sample (using lenses and large sample area while maintaining the pinhole resolution), counting rate capabilities (up to 5 MHz for 10% dead time with a new 3He tubes detector supplied by GE Reuter-Stokes), instrumental resolution (Δλ/λ between 2% and 20% using a double-disc chopper with variable slit opening and TOF data acquisition), and the minimum and maximum scattering variable; Qmin = 0.0002 Å-1 (using lenses and a secondary high-resolution detector) and Qmax = 1 Å-1 (using λ = 3 Å). All these new options, and the new user-friendly control software, have significantly increased the maneuverability of the instrument. Thus, KWS-2 is a highly versatile tool that can address a broad range of structural studies over a wide length scale, between Angstrom and microns, by offering multiple working modes that can be selected and used in a direct and user-friendly manner.
Primary author
Dr
Aurel Radulescu
(Jülich Centre for Neutron Science - Outstation at MLZ)
Co-authors
Dr
Andreas Stadler
(FZ Jülich)
Georg Brandl
Dr
Houston Houston
(JCNS at MLZ)
Dr
Karol Ciepluch
(Forschungszentrum Jülich, Istitute of Complex Systems (ICS-1))
Dr
Marie-Sousai APPAVOU
(Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH)
Dr
Ralf Biehl
(Forschungszentrum Jülich GmbH)
