P493 – Soft XRD FURKA SwissFEL PSI
Application
Soft X-ray diffractometer / Manipulator stage for RIXS
Year of delivery
2022
Installation site
FURKA beamline at SwissFEL, Paul Scherrer Institut, Switzerland
Design Features
- Sample manipulator with six degrees of freedom including Theta circle.
-
Sample cooling (liquid He, 20 K).
- Detector manipulator, 2Theta circle.
- Separate 2Theta circle for RIXS collimating mirrors.
Performance Features
- High stability for small effecive RIXS source size.
- Small circle of minimum confusion of all sample and 2Theta rotation axes.
- High positioning resolution and repeatability of all motion axes.
-
Low sample temperature (20 K) at large beam incidence and scattering angle ranges (no cooling shield around sample).
Outer Dimensions
Technical specifications and performance values
Sample manipulator
Sample lateral translation
(along sample surface)
Range
-6.26 mm to +5.87 mm
Resolution (design value)
0.039 µm /motor fine step
(1/64, recommended)
0.05 µm /encoder count
Resolution (measured value)
0.50 µm
Repeatability
0.61 µm
Sample vertical translation
Range
-6.10 mm to +5.93 mm
Resolution (design value)
0.039 µm /motor fine step
(1/64, recommended)
0.05 µm /encoder count
Resolution (measured value)
0.50 µm
Repeatability
0.60 µm
Sample longitudinal translation
Range
-11.60 mm to +0.93 mm
Resolution (design value)
0.0195 µm /motor fine step
(1/64, recommended)
0.05 µm /encoder count
Resolution (measured value)
0.50 µm
Repeatability
0.36 µm
Sample rotation (Kappa)
Range
-31.0° to +30.5°
Resolution (design value)
1.07 x 10-4 °/motor fine step
(1/64, recommended)
3.36 x 10-5 °/encoder count
Resolution (measured value)
0.002°
Repeatability
0.00055°
Sample rotation (Theta)
Range
-101° to +100°
Resolution (design value)
5.04 x 10-4 °/motor fine step
(1/256, recommended)
8.38 x 10-8 °/encoder count
Resolution (measured value)
0.002°
Repeatability
0.00024°
Circle of confusion
29.6 µm
Sample rotation (Azimuth)
Range
-57.84° to +52.54°
Resolution (design value)
2.81 x 10-3 °/motor fine step
(1/256, recommended)
1.27 x 10-4 °/encoder count
Resolution (measured value)
0.005°
Repeatability
0.00064°
Detector manipulator
Detector rotation (2Theta)
inner rotary table
Range
364.27°
Resolution (design value)
1.52 x 10-4 °/motor fine step
(1/256, recommended)
8.38 x 10-8 °/encoder count
Resolution (measured value)
0.002°
Repeatability
0.00022°
Circle of confusion
27.3 µm
Detector rotation (2Theta)
outer rotary table
Range
2.4° to 181.9°
Resolution (design value)
9.40 x 10-5 °/motor fine step
(1/256, recommended)
8.38 x 10-8 °/encoder count
Performance Test Results
Sample position deviation after lateral
translation
Sample position deviation after longitudinal translation
Sample position deviation after vertical translation
Sample rotation deviation after rotation (Kappa)
Sample rotation deviation after rotation (Theta)
Sample rotation deviation after rotation (Azimuth)
Sample lateral translation positioning
resolution
Sample longitudinal translation positioning resolution
Sample vertical translation positioning resolution
Sample rotation (Kappa) positioning resolution
Sample rotation (Theta) positioning resolution
Sample rotation (Azimuth) positioning resolution
Detector rotation deviation after rotation (2Theta)
Detector rotation (2Theta) positioning resolution
Circle of confusion for sample rotation (Theta)
Circle of confusion for detector rotation (2Theta)
Pictures
Video
