Berlin 2018 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 49: Soft Matter Physics: Emerging Topics, New Instruments and Methods

CPP 49.3: Vortrag

Mittwoch, 14. März 2018, 15:30–15:45, C 230

New neutron spectrometer NEAT at Helmholtz Zentrum Berlin for investigation of functional dynamics at nanoscale — Gerrit Günther, Veronika Grzimek, and •Margarita Russina — Helmholtz Zentrum Berlin für Materialied und Energie, Hahn-Meitner Platz 1, 14109 Berlin

Neutron time-of-flight spectrometer NEAT has a long history of successful application to the study dynamics and function. It is best suited to probe dynamic phenomena directly in the broad time domain of 0,1-100 ps and on the large length scale ranging from 0.05 to up to about 5 nm. Recent upgrade of the instrument resulted in 300 fold higher count rate compare to predecessor placing NEAT on the level of the world best. The advanced features of the new instrument include novel integrated guide-chopper system which deliver neutron beam with variable characteristics and substantial increase of the detector angle coverage with simultaneous increase of angular resolution. New instrumental capabilities provides optimal experimental conditions for investigation of microscopic dynamics in soft and hard matter including single excitations in crystals, applications with high magnetic field up to 14 T or in-situ confinement of gasses and liquids in porous systems. Here we present details of NEAT upgrade, measured instrument characteristics and show first experimental results.