Diffraction Station

Feature	Info	Comments
Photon Energy	5-28 keV	Routine operation 8-15 keV
Focal Spot	50 - 200 nm Measured: 98 nm @ 8 keV 62 nm @ 14 keV	Diffraction limited spot, the spot size is energy dependent. See doi.org/10.1364/OE.386068
Focused beam divergence	Approx. 1.2 mrad	Energy independent.
Coherent Flux	Fully coherent beam: 6x1010 @ 8keV 3x1010 @ 10keV 8x109 @ 14keV	Flux at the sample position. Depends on energy, see Beamline Optics and doi.org/10.1364/OE.386068
2-circle Goniometer	Theta: stroke [-5, 90] deg resolution: 10-4 deg Phi: stroke [-180, 180] deg resolution: 10-4 deg	Theta is horizontal and perpendicular to the X-ray beam. Phi is perpendicular to Theta and vertical for Theta=0. Note that the goniometer does not provide tomographic capabilities.
Coarse sample scanner (XYZ)	stroke: 20 mm resolution: 100 nm	In-house development
Fine sample scanner (XYZ)	Option 1 (standard): 100 μm stroke in all directions Option 2: 200 μm stroke in each horizontal direction 100 μm vertical stroke	NPXY100Z100-135 This option provides the stiffest frame and the highest resolution NPXY200Z100-271
Accessible space	Approx. 50 mm working space upstream of the X-ray focus.	Always contact the beamline staff to discuss non-standard sample holders or environments.
Continuous scanning	A single fine axis (X, Y, or Z) can be scanned continuously for fast mapping in 2D.
Sample Microscopes	On Axis and Top Microscopes Max res: 5 μm Max Field of view: 0.3 - 4 mm
X-Ray Fluorescence	RaySpec single-element SDD, coupled with an XSPRESS3 pulse processor
In-line Detectors	Eiger2 X 4M in vacuum 2968 x 2162 pixels2 75 μm pixel size Pilatus 1M 981 x 1043 pixels2 172 μm pixel size High-resolution Crytur camera 2048 x 2048 pixels2 600 nm effective pixel size	Detector distance given by flight tube, approx 1-4.5 m Detector distance minimum 180 mm Flexible placement downstream of the sample
Diffraction	Merlin Si Quad 512 x 512 pixels2 55 μm pixel size	Mounted on the detector robot.
Detector robot	Positions the detector in a spherical coordinate system with polar and azimuthal angles approx. [-5, 90] degrees, and radius approx. [200, 1000] mm.
Flight tubes	Forward vacuum tube housing the Eiger 3.5 m from the focus (modular in 1 m segments up to 4.5 m). Entry window 1.0 um Si3N4. Inflatable He tube for the Bragg geometry, cut to length. Entry and exit windows 6 um mylar.
Other integrated equipment	Keysight B2985A electrometer ALBA electrometers PandABox acquisition card for digital and analog input SRS EC301 potentiostat Alemnis Nanoindenter
Energy scanning	Manual energy changes are possible on a timescale of minutes. Image stacks can be collected as functions of energy, but XANES and EXAFS measurements are not possible.
Off-line microscopy	Two optical microscopes are available for off-line sample inspection. One is a high resolution microscope (Olympus BX53M), the other a long distance stereo microscope (Olympus SZX16). A Hitachi SU1000 electron microscope is also available at the beamline.