Difference between revisions of "Calibration"
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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. | 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 | The standard calibration scan parameters are: | ||
2theta start: -17 deg | ''2theta start: -17 deg | ||
2theta end: 50 deg | 2theta end: 50 deg | ||
step size: 0.0005 deg | step size: 0.0005 deg | ||
count time: 0.01 sec/step | |||
count time: 0.01 sec/step'' | |||
Revision as of 16:54, 23 June 2010
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.
