Calibration

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A calibration file is needed to merge data collected from each of 11-BM 12 detectors into a single 2theta vs intensity dataset.

The calibration file corrects each of the 12 detectors for 2theta zero shift, wavelength, and scaling factor.

Calibration files are obtained from a 12-histogram GSAS refinement of data collected on a powder sample containing a mixture of NIST SRM Al2O3 & Si.

The standard calibration scan parameters at 30 keV currently are as follows:

  • 2theta start: -17 deg
  • 2theta end: 50 deg
  • step size: 0.0005 deg
  • count time: 0.01 sec/step

Calibration

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