|X-ray source||GeniX3D Cu ULD beam delivery system (Xenocs SA, France)|
|Detector||Pilatus-300k hybrid pixel position sensitive detector (Dectris Ltd, Switzerland)|
|Motor controllers||TMCM-351 (2×) and TMCM-6110 (1×) integrated controller & driver for stepper motors (TRINAMIC Motion Control GmbH & Co. KG, Germany)|
|Vacuum gauge||TPG-201 Pirani gauge (Pfeiffer Vacuum GmbH, Germany)|
|Control software||SAXSCtrl: a Python based graphical instrument control and data reduction framework (self developed)|
The instrument is of modular construction: all parts are mounted on a single optical rail.
|Attainable q-range||0.019 nm-1 to 30 nm-1||Corresponds to 320 nm to 0.2 nm|
|Typical beam size at sample||0.7 mm||Optimized for 1 mm thick capillaries, possible to increase up to 1 mm|
|Sample-to-detector distances||~450 mm (short), ~1200 mm (long), ~1500 mm (very long)||Other distances can also be used on request|
|Typical X-ray intensity at sample, short distance||100-150 kcps||Expressed in detector count (photon × quantum efficiency) units|
|Typical X-ray intensity at sample, long distance||50-72 kcps||Expressed in detector count (photon × quantum efficiency) units|
|Vacuum||<0.05 mbar||Full beam-path vacuum; can be divided in case of vacuum-intolerant sample environments|
|X-ray wavelength / energy||0.1542 nm / 8048 eV||Cu K$\alpha$ radiation|
|Collimation||3 pin-holes||Pin-holes are Pt-Ir electron microscope apertures from 150 µm up to 1250 µm|
|Sample quantity needed||
Sample holders are suspended on a motorized XY stage with 35 mm horizontal and 75 mm vertical stroke length. Sample holders and environments, which can be used include:
- standard "ladder" for at most 5 self-carrying specimens (solid plates, powder between films)
- multi-shot "ladder" for at most 14 self-carrying specimens (solid plates, powder between films)
- aluminum block for at most 5 capillaries of ~1-1.6 mm thickness. Sample temperature can be controlled by water circulation in the block.
- aluminum block for at most 20 capillaries of ~1-1.6 mm thickness.
- shear cell with asymmetric sawtooth profile (cannot be used under vacuum)
- sample holder for 1 capillary, 0.7 T static magnetic field can be applied
- other sample holders can be constructed or adapted upon request
Calibration of the scattering angle
The X (scattering angle, momentum transfer) axis of the scattering patterns in the SAXS range is calibrated using the Bragg reflections of a mesoporous SBA15 sample, courtesy of Roland Schmack, MSc. In the WAXS range either tripalmitin or LaB6 is employed.
The Y (intensity) axis of the scattering patterns is calibrated using a pre-calibrated glassy carbon specimen, courtesy of Dr. Jan Ilavsky.