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Small angle neutron scattering experiment KWS-2 at MLZ Garching

Small Angle Neutron Scattering (SANS)
The small-angle scattering diffractometer KWS-2 represents a classical pinhole SANS instrument where, combining the pinhole mode using different neutron wavelengths and detection distances with the focusing mode using MgF2 lenses, a wide Q-range between 1 x 10-4 and 0.5 Å-1 can be explored. It is dedicated to high intensity/wide-Q investigation of mesoscopic structures and structural changes due to rapid kinetic processes in soft condensed matter, chemistry, and biology. The high neutron flux, comparable with that of the world leading SANS instruments, which is supplied by the neutron delivery system (cold source, selector, guides), and the possibility to use large sample area using focussing lenses, enable high intensity and time-resolved studies. On demand, the instrument resolution can be tuned using the double-disc chopper with adjustable opening slit, which allows the variation of the wavelength spread between 2 and 20%. This offers a high flexibility in optimising the instrument performance towards improved characterisation of structural details and accurate beam characteristics (avoid the gravity and chromatic effects while using the lenses).

Neutron Scattering:
KWS-2 at Heinz Maier-Leibnitz Zentrum operated by Jülich Centre for Neutron Science

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