User Manual LYNXEYE XE Detector
6-28 DOC-M88-EXX240 V1 – 03.2014
6.4 Spatial Calibration
Prior to calibration, the system must be aligned using the LYNXEYE XE detector in 0D mode. To make
use of many strips as possible, it is necessary to download the default parameters for resolution and
offset of the actual detector radius, see chapter 6.5.
Each detector is unique. A calibration process is used in conjunction with standard reference materials
to determine a zero offset for the resolution in degrees. This value represents the angular difference
between the zero angle of 2-theta and the zero channel of the PSD. The calibration program will refine
the values and record them in the Configuration program. Spatial Calibration is independent of Energy
Calibration.
6.4.1 Perform Positional Calibration
1. Remove / open all detector slits in front of the detector.
2. Ensure that the proper Kβ filter and the 2.5° Soller slit are in place.
3. Ensure that the reference material is mounted (NIST 1976) in the sample stage.
4. Set the goniometer to the parameters in Table 6.4 DIFFRAC.Measurement COMMANDER.
Table 6.4: Diffractometer settings and angular (Kα
1
) Positions for NIST 1976b standard reference
Tube Gen Volt. Gen. Curr. 2 Theta Theta Time / Step
Cr 30 40 53.326 26.663 30
Co 35 40 41.049 20.525 20
Cu 40 40 35.147 17.574 10
Mo 50 50 15.981 7.991 10
Ag 50 30 12.589 6.295 10
5. Switch to ‘Resolution and Offset’ in DETECTOR plugin. At this time only some values in ‘Calibra-
tion by Measurement’ need to be changed.
6. Enter the value for ‘Theoretical 2 Theta Peak’ and ‘Time per Step’ according to Table 6.4. Insert
‘15’ for sample rotation if available.
7. Start the ‘Calibration by Measurement’ by activating the ‘Measure’ button
8. Save the experiment for further evaluation by ‘Save experiment’
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