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in EBSD explained:

Basics of EBSD

EBSD Experiments

Undertaking Experiments

Sample Preparation

Links to this section:

System Components
Pattern Formation
Interpreting the diffraction pattern
Calibration
Indexing
Band Intensity
Summary

Basics of EBSD

Calibrating the EBSD system

EBSD system calibration measures the sample to screen distance and the pattern centre position on the phosphor screen (Figure 5). The pattern centre is the point on the screen closest to the generation point of the diffraction pattern on the sample. There are several methods for calibrating an EBSD system.

One method to measure the pattern centre position is to collect a diffraction pattern with the screen both in the normal and partly retracted position and to measure the positions of the same zone axes on both patterns (Figure 7). The screen to sample distance is calculated by measuring the distance between two zones separated by a known angle with the screen in the operating position. The calibration can also be performed using a single pattern by iteratively fitting the pattern centre and sample to screen distance to minimise the error in the orientation measurement

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