Scan of the difference between measured and calculated propagation times of the detected photons across assumed speed of the photons and the hit position along length of the bar.
- v12_p07 runs
- 100 pions @ >3 GeV/c for each data point
- bar #5
- 20 bins along length of the bar ([-100,+100] cm); bin #10 corresponds to the perpendicular case
Example of the time difference between measured and calculated propagation time (bin # 14; 19.4 cm/ns):
Time difference (z scale [ns]) for direct going photons ("y bin" should be "x bin"):
Time difference (z scale [ns]) for reflected photons ("y bin" should be "x bin"):
Time difference (z scale [ns]) for a sum ("y bin" should be "x bin"):
Shift of the bar-box's x position ("y bin" should be "x bin"):
Simulation:
Difference between true and reconstructed position (X) on dirc's wall (simulation):
