Diffractometer-Control Software For Bragg-Rod Measurements

We present Generalized Diffractometer Control (gdc), a diffractometer-control software package developed specifically for high-precision measurements of Bragg rods; we discuss its features and analyze its performance in data collection. gdc, implemented at several APS beamlines, controls a six-circl...

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Bibliographic Details
Main Authors: Yacoby, Y, Walko, D A, Brewe, D, Bretschneider, M, Sowwan, M, Clarke, R, Pindak, R, Stern, E A
Format: Conference Proceeding
Language:English
Subjects:
ACCURACY
COMPUTER CODES
COMPUTERIZED CONTROL SYSTEMS
GEOMETRY
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
INTERFACES
MEASURING METHODS
SYNCHROTRON RADIATION
THIN FILMS
X-RAY DIFFRACTION
X-RAY DIFFRACTOMETERS
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Summary:We present Generalized Diffractometer Control (gdc), a diffractometer-control software package developed specifically for high-precision measurements of Bragg rods; we discuss its features and analyze its performance in data collection. gdc, implemented at several APS beamlines, controls a six-circle diffractometer in either Eulerian or kappa geometry, yet does not assume a mechanically ideal diffractometer; instead, the measured directions of the diffractometer axes (and the direction of the incident beam) are input parameters. The Labview-based program features a graphical interface, making it straightforward to find all the commands and operations. Other features include optimized scans along Bragg rods, straightforward background subtraction, and extensive sets of pseudomotors.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.1758020