Page History

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Run 10629, the online SVT baseline calibration run taken before run 10648, was analyzed. Although most of the channels were successfully fit to a Gaussian to extract a mean and width, 127 slices out of 20096 total were not successfully fit ( empty channels were not counted in this ). These were primarily from Layer 2, top, stereo. Note that the channels from Layer 5, top, and Layer 7, bottom, were flagged because of their broad width. A sample of the various bad channels is shown below:

Future Work

•  The online baseline runs will be processed to provide a double-check on the expected means and widths.

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•  The remaining 294 of the "good" runs from 2019 will be processed. It is to be expected that some further algorithm development will be needed to handle new edge cases or to tweak the few parameters in the current code.

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•  Once this has been accomplished and quality assurance metrics have been identified, the channel baselines (corresponding to the mean of the Gaussian fit) can be written out in such a manner that they can be uploaded to the database.

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