- hdgeant4 and sim-recon
- geometrical reconstruction
- 30M photons for LUT generation
- averaged LUT
- pions/kaons @ 4 GeV/c
- 2 ns selection on time difference
- 6 x 18 MCP in optical box
Geant4 view of the DIRC with coordinate system. Red point indicates theta=4 deg phi=-90 deg
Bug with propagation time of the Cherenkov photons:
Difference between measured and calculated time:
Fixed propagation time (time = track_length/photon_velocity(n(energy)) ):
Hit pattern for 1k pions and kaons @ (theta=4, phi=-90):
Reconstructed Single Photon Resolution for pions(blue)/kaons(red) @ (theta=4, phi=-90) degree @ 4 GeV :
Pion(blue)/Kaon(red) separation power @ (theta=4, phi=-90) degree @ 4 GeV:
Separation map for lower segment of the DIRC (optical box is on the right side):
X projection for -30<y<-25:
