SKM 2021 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 18: Posters Magnetism V
MA 18.18: Poster
Freitag, 1. Oktober 2021, 10:00–13:00, P
MIASANS at the longitudinal neutron resonant spin echo spectrometer RESEDA — •Jonathan Leiner1,2, Christian Franz1,2,3, Johanna Jochum1,2, and Christian Pfleiderer1,2 — 1Technical University of Munich, Garching, Germany — 2Heinz Maier-Leibnitz Zentrum (MLZ), Garching, Germany — 3JCNS at MLZ, FZ Jülich GmbH, Garching, Germany
The RESEDA (Resonant Spin-Echo for Diverse Applications) instrument has been optimized for neutron scattering measurements of quasi-elastic and inelastic processes over a wide parameter range. One spectrometer arm of RESEDA is configured for the MIEZE (Modulation of Intensity with Zero Effort) technique where the measured signal is an oscillation in neutron intensity over time, which is prepared by two precisely tuned radio-frequency (RF) flippers. With MIEZE, all of the spin-manipulations are performed before the beam reaches the sample, and thus the signal from sample scattering is not disrupted by any depolarizing conditions there (i.e. magnetic materials). The MIEZE spectrometer is being further optimized for the requirements of small-angle neutron scattering (MIASANS), a versatile combination of the spatial and dynamical resolving power of both techniques. We present the progress on (i) installing new superconducting solenoids as part of the RF flippers to significantly extend the dynamic range (ii) design and installation of modular options for both reflecting guides and evacuated flight paths with absorbing walls for background reduction (iii) installation of a new detector on a translation stage within a vacuum vessel for flexibility with angular coverage and resolution.