Difference: RootNotesTav (20 vs. 21)

Revision 212018-09-08 - TamasVami

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META TOPICPARENT name="Diaries"
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>		 with updated tracker alignment and APE conditions for the Summer18 ReReco of the eras ABC(D). The alignment constants are the result of a dedicated alignment campaign, and details and validation results have been presented at the tracker alignment meeting September 4, 2018 [*]. The tags also contain the previous offline alignment history. [*] https://indico.cern.ch/event/688852/#b-279830-tracker-alignment-tra
 

Template insights from Morris

The 1D template position estimation is insensitive to smallish changes of charge scale [+-10% should be no problem]. The actual algorithm does truncate pixel charges that are too large to avoid delta ray effects [it is formally sensitive to the charge scale]. The shape fits use the pixel by pixel charges to estimate the uncertainties in the denominators of the chisqure function. Finally, the estimated hit uncertainties and probabilities do depend very much on the charge scale [few percent changes are notable]. Lots of cluster charge indicates lots of delta ray activity and larger errors. Each template calibration should remove the scale effects.
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