Deutsche Tagung f ¨ur Forschung mit ... - SNI-Portal

Methoden und Instrumentierung Poster: Mi., 14:00–16:30 M-P28
X12 a new MAD beamline at EMBL Hamburg
Christoph Hermes 1 , Thomas Gehrmann 1 , Doris Jahn 1 , Emiliano Piselli 1 ,
Bernd Robrahn 1 , Tim Siambanis 1 , Manfred Weiss 1
1 EMBL, Notkestr. 85, 22603 Hamburg
In October 2005 EMBL officially opened for user-operation a new energy-tunable beamline
for applications in Protein Crystallography. It receives 1 mrad of white Synchrotron
radiation from a bending magnet at the DORIS III storage ring. Key optical elements
of the beamline are a bespoke fixed-exit double crystal monochromator (DCM) and a
vertically focusing X-ray mirror with dynamically adjustable radius. These elements
will be described in detail. X-ray diffraction data are collected using a MAR desktop
beamline equipped with a large CCD detector, an automatic sample changer and a
fluorescence detector. Beamline control is achieved with a program written in Labview
and aiming at optimal user-friendliness via an intuitive graphical interface to allow, for
instance, very rapid changes of the X-ray energy. Examples of data collected on this
beamline will be shown.