Validation VXD alignment in phase 2 using collision data

Sumitted to PubDB: 2019-01-14

Category: Conference papers and plots, Visibility: Public

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Authors	Jakub Kandra
Date	Dec. 5, 2018
Belle II Number	BELLE2-NOTE-PL-2018-036
Abstract	At beginning of phase 2 VXD alignment was determined and the first VXD alignment was published in BELLE2-NOTE-TE-2018-006. After the Belle 2 detector collect large number collision data the alignment procedure was repeated. The first alignment was checked and improvements was applied to Belle 2 analysis and software for further analysis. The full of data collected during phase 2 was analysed for VXD alignment purpose. We were looked for stability of VXD alignment constants and running monitoring parameters in time. Validation VXD alignment were done using track-to-hit residuals. The figures show residuals in both directions using runs for alignment determination and running of means of residuals as function of other runs (time).