Calibration

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

The robot system (aka Snookums) can access 56 samples mounted on individual posts plus 6 magazines of 16 samples each. A diagram for viewing showing the numbering is found here.