Jakub Kandra

05 December 2018

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).

Keyword(s): VXD, SVD, PXD, alignment, validation, phase 2