Diffraction data is autoprocessed during your beamtime. Due to DIAD’s moving beam geometry, the integration of the 2D pattern’s involves a correction for the change in beam position on the sample.
Autoprocessing
Autoprocessed diffraction data will go into your Processed folder and will look like this:
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The file is named with the scan number and the DAWN process that was applied. In this case there is also a folder with .dat XY files.
DAWN
The dawn process list can be found in:
<visit-folder>/xml/diffraction/configurations/Dawn/
Open up dawn and in the processing perspective you can drag and drop the above process list into the processing panel or you can click the Load Configured Pipeline button . An example list is shown below:
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Here we apply a threshold mask to remove the gaps between the modules and hot pixels. This is simply an upper and lower threshold mask.
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We then apply a correction for DIAD’s moving beam geometry. The file locations will be the same but the visit id and scan numbers will be specific to your beamtime.
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The azimuthal integration is then applied.
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The data is also exported into XY .dat files.
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Manual processingIn this pipeline the users also wanted their data in 2Theta. So the data was exported as .dat XY files in 2 theta as well.
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This process list can be re-run locally if you wish to change parameters. Be sure to check that you have the correct path locations for the moving beam geometry calibration files.