Time spread of the photons as a function of polar angle.
- DIRC@EIC, ePIC
- 3-layer spherical lens with sapphire, r=[62,36] vs ideal lens
- 32x32 pixels MCP-PMTs with HIQ400, CE=95%
- pions 6 GeV/c; phi = 0 (no field); vertex y-shifted by 0.5*barwidth (to hit middle of the bar)
- 0.5 mrad tracking
- 100 ps time precision
Time spread for 99%, 95% and 90% of the photons in the event:
Example of time distribution at 90 deg:
Example of time distribution at 160 deg:
