Performance of the Barrel DIRC with tilted back side of the prism.
- PandaRoot simulations without field
- configuration with narrow bars, 3 layer spherical lens, and 8 MCPs layout with ~17 mm gap
- default radii of the lenses ([95,50], PbF2). Same for all prisms configurations
- pions and kaons @ p = 3.5 GeV/c phi = 10.825 deg
- time-imaging reconstruction with full-simulated pdfs
- 30k tracks for pdf generation (per each particle species); 5k for determining separation
- ~2 mrad tracking resolution
- realistic time precision
- QE=18(24)% ( black curve). CE=95%
- spatial QE = 1
Example of the prism with 70 degree back side:
Performance @ 22,50 and 90 degree polar angle of the tracks:
Geometrical reconstruction:
Time imaging:
Hit pattern for 90 degree polar angle of the pions/kaons @ 76 degree back side angle:
Hit pattern for 90 degree polar angle of the pions/kaons @ 90 degree back side angle:
