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Small angle scattering diffractometer
This instrument is focussed on cold neutrons. All parameters given here are valid during the current operation of FRM II. Please get in touch with the instrument team well in advance for all further details (length of experiment etc.).
The 20 % wavelength selector of the KWS-1 allows performing scattering experiments on larger colloids or concentrated soft matter systems. In addition, magnetic materials can also be studied with polarised neutrons . A polariser with 3 cavities, each having a V-shaped supermirror, is placed in front of the collimation. The full wavelength band can be covered with min. 90 % (95 % typical) polarisation. A radio frequency spin flipper allows reverting the polarisation. Horizontal and vertical magnets are provided to render the magnetic field at the sample position.
The MgF2 lenses are used for the high flux mode with large sample areas, while the resolution stays in the classical SANS range. Biological samples can be handled due to the detector distance of ca. 1 m, which allows a maximal scattering vector of Q = 0.5 Å-1.
 Feoktystov, A. et al., J. Appl. Cryst. 48 (2015), 61-70
Dr. Henrich Frielinghaus
Phone: +49 (0)89 158860-706
Dr. Artem Feoktystov
Phone: +49 (0)89 158860-746
Dr. Zakaria Mahhouti
Phone: +49 (0)89 158860-805
Phone: +49 (0)89 158860-508
Find the latest publications regarding KWS-1 in our publication database iMPULSE:
Heinz Maier-Leibnitz Zentrum. (2015). KWS-1: Small-angle scattering diffractometer. Journal of large-scale research facilities, 1, A28. http://dx.doi.org/10.17815/jlsrf-1-26
For citation please always include the DOI.