Performance of the Barrel DIRC for bars with realistic timing precision.
- PandaRoot simulations without field
- configuration with narrow bars, 3 layer spherical lens, and 8 MCPs layout with ~17 mm gap
- Nlak33A, default radii = [95,50]; radii of the ordered lens prototype = [94.5,47.3]( see comparision)
- pions and kaons @ p = 3.5 GeV/c @ phi = 10.825 deg
- geometrical and time-imaging reconstruction with full-simulated pdfs
- 5M samples are used for the LUT generations
- 30k tracks for pdf generation (per each particle species); 1.5k for determining separation
- ~2 mrad tracking resolution
- QE=18(24)% ( black curve). CE=95%
- spatial QE = 1
Data from Albert:
Superimposed:
Performance as a function of polar angle:
Geometrical reconstruction:
Time imaging:
2 Gaussian vs. raw histogram as input for time smearing. Input histogram:
Performance as a function of polar angle:
Geometrical reconstruction:
Time imaging:
Time imaging likelihood distribution (22 deg) for 100 ps Gaussian (top) and for raw histogram smearing (bottom):
