bar imperfections

Performance of the Barrel DIRC for bars with different imperfections.

  • PandaRoot simulations
  • pions and kaons @ 3.5 GeV/c
  • time-imaging reconstruction with full-simulated pdfs
  • 30k tracks for pdf generation (per each particle species); 5k for determining separation
  • ~2 mrad tracking resolution
  • 100 ps time resolution
  • standard wavelength QE
  • spatial QE = 1

Rectangularity shapes:

Time imaging reconstruction with pdfs from imperfect bar:

Time imaging reconstruction with pdfs from ideal bar:

Projection for time imaging reconstruction with pdfs from imperfect bar:

Geometrical reconstruction:

Example of shape (b) with alpha = 40 mrad:

Height variation: