Performance of the ePIC DIRC as a function of PMT's time precision.
- DIRC@EIC, ePIC
- 3-layer spherical lens with sapphire, r=[62,36]
- 3 mm pixels HIQ400, CE=95%
- pi/K @ 6 GeV/c
- 0.5 mrad track smearing at tracking layer
- phi = 0 (no field); vertex y-shifted by 0.5*barwidth (to hit middle of the bar)
- [0.05 - 1] ns time precision
- geometrical reconstruction with averaged LUT from 15M photons
- GR with per-PMT and chromatic corrections
- 20k tracks for pdf generation (per each particle species) (generated with 0.5 mrad track resolution); 5k for determining separation
Photon yield after GR:
Photon yield after TI:
GR:
TI:
