Berlin 2024 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 15: Poster I

CPP 15.44: Poster

Montag, 18. März 2024, 18:00–20:00, Poster C

The neutron time-of-flight spectrometer TOFTOF and its application to soft condensed matter physic — •Marcell Wolf and Christopher Garvey — Heinz Maier-Leibnitz Zentrum, Technische Universität München, Germany

TOFTOF is a direct geometry disc-chopper time-of-flight spectrometer. A cascade of seven fast rotating disc choppers is used to prepare a monochromatic pulsed beam which is focussed onto the sample by a converging super-mirror section. The scattered neutrons are detected by 1000 He detector tubes with a time resolution up to 50 ns. The detectors are mounted at a distance of 4 m and cover 0.75 sr. The high rotation speed of the chopper system together with a high neutron flux in the wavelength range of 1.4 -14 Å allows free tuning of the energy resolution between 3 meV and 2 μeV. The fast neutron background is suppressed by the s-shaped primary neutron guide. This enables the investigation of weak signals. Here we will discuss the value of neutron spectroscopy for different applications in soft condensed matter physics. We will show different sample environments which can be used for sample manipulation.

Keywords: Neutron spectroscopy; Soft condensed matter; TOFTOF