Beamline I711 - Short information
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Beamline I711 is a crystallography beamline used for single crystal and powder diffraction. It utilizes a 13-period, 1.8 T, multipole-wiggler designed to operate in the 0.95 (13.0 keV) to 1.4 Å (8.8 keV) region. The beamline has a single crystal monochromator which provides a high photon flux at the sample while sacrificing easy tunability and high energy resolution. The experimental setup is a 4-circle diffractometer with kappa geometry, capable of doing both single crystal* and powder diffraction using a large area CCD detector.
*single crystal diffraction
will not be available in the time period January - July 2012.
Contact person:
Carsten Gundlach, beamline manager
References:
Y. Cerenius, K. Ståhl, L.A. Svensson, T. Ursby, Å. Oskarsson, J. Albertsson and A. Liljas, The Crystallography Beamline I711 at MAX II, J. Synchrotron Rad., 7, 203, 2000.
Technical data:
| Source |
Multi-pole wiggler, period= 174 mm, 27 poles, Bmax = 1.8 T. |
| Pre-mirror |
Vertically focusing cylindrical mirror. |
| Monochromator |
Single asymmetrically cut Si(111) crystal with horizontal diffraction plane. The crystal is bendable for horizontal focusing. |
| Wavelength range |
0.95 - 1.4 Å. |
| Wavelength resolution |
E/dE ~ 103. |
| Photon flux on sample |
> 1011 photons/sec for wavelenghts > 1 Å, behind slits 0.3 x 0.3 mm2.
The additional 3 slit collimation of the incoming X-ray beam reduces the intensity to 1010 photons/sec for the SAXS experiments. |
| Spot size on sample |
Focussed spot size 1.0(h) x 0.5(v) mm2 but the spot size is futher collimated down to usually 0.3 x 0.3 mm2 for most applications. |
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Experimental station |
Behind the monochromator there is a 2theta-arm with an angular travel between 2 and 40 degrees. Samples and detectors can be mounted on this arm up to a distance of 6.3 m from the monochromator crystal.
The main experimental set-ups consists of is a 4-circle diffractometer, capable of doing both single crystal and powder diffraction. There is also an optional SAXS set-up where the samples are kept in an evacuated sample chamber that is added onto the 2theta arm. The q-range can be varied by changing the sample to detector distance with a modular tube system. The experimental station uses a titan CCD detector with 165 mm diameter active area. Different types of sample holders, including a thermostat controlled capillary holder and a flow through cell, are available. |
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