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.

Robot Operator Functions