Number of reflections of photons inside radiator bars as a function of polar angle. Calculated based on MC photon directions and MC photon propagation length.
- EIC, ePIC, hpDIRC
- with B-field,track hitting middle of bar #5
- 3-layer spherical lens with sapphire, r=[62,36]
- 16x16 pixels MCP-PMTs with HIQ400, CE=95%
- 1000 pi @ 6 GeV/c
- 100 ps time precision
Photons with more than 1500 reflections are disregarded.
With top-bottom reflections
Per-angle distributions. Zoomed to [0,500] (mean evaluated for [0,1500]):