Regensburg 2007 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 7: POSTER: INTERNAL SYMPOSIUM Scattering Experiments

CPP 7.7: Poster

Montag, 26. März 2007, 16:00–18:00, Poster B

Recent developments at BW4 / HASYLAB — •A. Timmann, S.V. Roth, R. Gehrke, S. Hu, F.-U. Dill, M. Dommach, R. Döhrmann, and T. Schubert — HASYLAB at DESY, Notkestr. 85, D-22607 Hamburg, Germany

The beamline BW4 of HASYLAB, Hamburg (Germany), is a dedicated materials science beamline [1]. The main experimental techniques used are transmission small-angle x-ray scattering (TSAXS) and grazing-incidence SAXS (GISAXS). With the implementation of the microfocus option at BW4 scanning experiments have become possible [1]. After the major refurbishment of the beamline in 2004 and 2005, we focussed on upgrading and introducing necessary sample environments. This includes a new stretching cell allowing to draw film shaped samples to elongations up to 640mm with drawing velocities from 0.1 up to 1200 mm/min keeping the beam position on the sample fixed. Presently, several force sensors with a measuring range up to 500N are available now, which will be upgraded to 1kN. For GISAXS, a heating stage for polymeric samples has been commissioned. In-situ sample observation is now possible with a high-resolution video camera. Based on recent experimental results, we present the upgraded capabilities of BW4.

[1] S.V. Roth et al., Rev. Sci. Instr. 77, 085106 (2006)