1. A new small-angle X-ray scattering set-up on the crystallography beamline 1711 at MAX-lab.
- Author
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Knaapila, M., Svensson, C., Barauskas, J., Zackrisson, M., Nielsen, S. S., Tof, K. N., Vestergaard, B., Arleth, L., Olsson, U., Pedersen, J. S., and Cereniusa, Y.
- Subjects
X-ray scattering ,CRYSTALLOGRAPHY ,SMALL-angle X-ray scattering ,PROTEINS ,COLLOIDS ,POLYMERS - Abstract
A small-angle X-ray scattering (SAXS) set-up has recently been developed at beamline 1711 at the MAX II storage ring in Lund (Sweden). An overview of the required modifications is presented here together with a number of application examples. The accessible q range in a SAXS experiment is 0.009-0.3 Å
-1 for the standard set-up but depends on the sample-to-detector distance, detector offset, beamstop size and wavelength. The SAXS camera has been designed to have a low background and has three collinear slit sets for collimating the incident beam. The standard beam size is about 0.37 mm × 0.37 mm (full width at half- maximum) at the sample position, with a flux of 4 × 1010 photons s-1 and λ: = 1.1 Å. The vacuum is of the order of 0.05 mbar in the unbroken beam path from the first slits until the exit window in front of the detector. A large sample chamber with a number of lead-throughs allows different sample environments to be mounted. This station is used for measurements on weakly scattering proteins in solutions and also for colloids, polymers and other nanoscale structures. A special application supported by the beamline is the effort to establish a micro-fluidic sample environment for structural analysis of samples that are only available in limited quantities. Overall, this work demonstrates how a cost-effective SAXS station can be constructed on a multipurpose beamline. [ABSTRACT FROM AUTHOR]- Published
- 2009
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