D3, the new diffractometer for the macromolecular crystallography beamlines of the Swiss Light Source

Fuchs, M.R.; Pradervand, C.; Thominet, V.; Schneider, R.; Panepucci, E.; Grunder, M.; Gabadinho, J.; Dworkowski, F.S.N.; Tomizaki, T.; Schneider, J.; Mayer, A.; Curtin, A.; Olieric, V.; Frommherz, U.; Kotrle, G.; Welte, J.; Wang, X.; Maag, S.; Schulze-Briese, C.; Wang, M.

doi:10.1107/S160057751400006X

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Figure 8
Left: measurement set-up for vibrations tests. Signals from accelerometers on the ground are compared with signals from accelerometers on the table (hidden behind the goniometer, see insert). The accelerometers were bolted horizontally via a rigid aluminium L-bracket, or glued vertically directly on the table. Right: comparison of ground vibrations (black line) and vibrations measured concurrently on the diffractometer table (colored line). X is transversal to the beam, Y is vertical and Z is along the beam. Plots of spectral displacement (square root of power spectral density of displacement, $[m/\sqrt{\rm{Hz}}]$ ), indicating the lowest vertical eigenfrequency of the table at 40 Hz. In the horizontal directions the width of the 40 Hz resonances extends to approximately 30 Hz.

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 21| Part 2| February 2014| Pages 340-351

doi:10.1107/S160057751400006X

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