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Beamline I911-3 is a macromolecular crystallography X-ray station, one out five experimental stations at the I911 beamline. The I911-3 station is optimized for multiwavelength anomalous diffraction (MAD) experiments and is therefore designed to be easily tunable in energy and with a high energy resolution. The beamline covers the wavelength range 0.7 - 2.0 Å. This covers the K-edges from manganese (Mn) to yttrium (Y) and LIII-edges from neodymium (Nd) to uran (U). The station has a collimating mirror to achieve high-energy resolution, a double-crystal monochromator and a focusing mirror. The high-flux photon beam is produced by a super-conducting multi-pole wiggler.
Thomas Ursby, Beamline Manager I911
Marjolein Thunnissen, User Support Coordinator I911
Reference:
T. Ursby, C.B Mammen, Y. Cerenius, C. Svensson, B. Sommarin, M.N. Fodje, Å. Kvick, D.T. Logan, J. Als-Nielsen, M.M.G.M. Thunnissen, S. Larsen and A. Liljas, The New Macromolecular Crystallography Stations At MAX-lab: The MAD Station, AIP Conference Proceedings, 705, 1241-1246, 2004.
Technical data:
| Source |
Multi-pole wiggler, period = 61 mm, 49 poles, Bmax = 3.5 T. |
| 1:st-mirror |
Water-cooled vertically collimating cylindrical mirror (R = 7300 m). |
| Monochromator |
Double crystal monochromator, Si(111). The first crystal is water cooled. |
| 2:nd-mirror |
Toroid mirror for horizontal and vertical focusing (R = 3300 m, R = 27 mm). |
| Wavelength range |
0.7 - 2.0 Å. |
| Wavelength resolution |
E/dE ~ 104 |
| Photon flux on sample |
3 x 1011 photons / s in 0.3 x 0.3 mm2 at 1 Å (measured) |
| Spot size on sample |
0.3(h) x 0.2(v) mm2 FWHM (measured) |
| Experimental techniques |
Macromolecular crystallography, optimized for multiwavelength anomalous diffraction (MAD). |
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