With this tool one can calibrate the instrument geometry parameters (beam center, detector tilt angle, detector tilt rotation angle and sample to detector distance) using a standard sample (e.g. quartz, silver behenate) 2D pattern.
Panel parameters
(Figure 2)
Figure 1: Screenshot of the "SAXS/WAXS Calibration" plugin menu.
Figure 2: Screenshot of the "SAXS/WAXS Calibration" "Settings" panel.
- Calibration Standard:
- Detector File(s): Load the standard 2D pattern.
- SelectStandardName: Select the loaded standard file name.
- Or select d-spacing File: Load your own d-spacing file.
- Edit: Activate or deactivate some rows in the loaded d-spacing file.
- Detector:
- [Detector Type Name]: Select the detector name which you used in your measurement, if there is no suitable one, select Custom and type the following parameters manually.
- Pixel Size X [µm]: Horizontal pixel size in unit µm.
- Pixel Size Y [µm]: Vertical pixel size in unit µm.
- Geometry:
- Beam Center X [pixel]: Horizontal beam center coordinate in unit pixel.
- Beam Center Y [pixel]: Vertical beam center coordinate in unit pixel.
- Tilt[deg]: The angle of detector tilt within the tilt plane in degrees.
- Rotation[deg]: The rotation angle of a plane in which the angle of tilt is defined.
- SDD[mm]: The distance from sample to detector in unit mm.
- Wavelength[A]: The X-ray wavelength in unit Angstrom.
- Fit Options:
- Step Size[pixel]: The step size for image integration in unit pixel.
- Ring Width[pixel]: The ring width of standard 2D pattern in unit pixel.
- Buttons:
- Fit: Start to fit the standard 2D pattern.
- Integrate: Start only to integrate the standard 2D pattern.
- Set Parameter: Put the calculated parameters into corresponding plugin parameters.
Figure 3: Screenshot of the "SAXS/WAXS Calibration" "Config" panel.
Figure 4: Screenshot of the "SAXS/WAXS Calibration" "Fit Log" panel.
Figure 5: Screenshot of the "SAXS/WAXS Calibration" "Calibration" panel.