Dresden 2020 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 2: Focus: Soft Matter and Nanocomposites - New opportunities with advanced neutron sources I

CPP 2.3: Vortrag

Montag, 16. März 2020, 10:15–10:30, ZEU 222

Low Background Instrumentation for Small-Angle Neutron Scattering — •Sebastian Jaksch — Forschungszentrum Jülich GmbH Jülich Centre for Neutron Science, Garching, Germany

Current and future neutron scattering experiments in soft-matter are strongly limited by their signal-to-noise ratio, as this determines the sensitivity for weak scatterers, low contrast conditions as well as spatial resolution at very low Q. Both current and future instruments need to take this into account. Using the example of small-angle neutron scattering (SANS), also under grazing incidence conditions (GISANS), this contribution will give an overview of current developments and challenges in that area. These considerations will be mostly focused on the Small-K Advanced DIffractometer (SKADI)[1] as a future SANS instruments at the ESS, technical considerations on a compact SANS instrument at the High-Brilliance Source[2] as well as measurements at the KWS-1[3] SANS instrument at MLZ, Garching, Germany.

[1]Jaksch, S., Frielinghaus, H., Jestin, J., et al., (2014). Concept for a time-of-flight Small Angle Neutron Scattering instrument at the European Spallation Source. Nucl. Instrum. Methods Phys. Res. A, 762, 22-30.

[2]T. Gutberlet et al., (2019). The Jülich high brilliance neutron source project - Improving access to neutrons. Physica B: Condensed Matter, 570, 345-348.

[3]Feoktystov, A. V., Frielinghaus, H., Jaksch, S. et al. (2015). KWS-1 high-resolution small-angle neutron scattering instrument at JCNS: current state. J. Appl. Crystallogr., 48(1), 61-70.