Reconstruction performance of the beam data with calibration laser.
- CERN 18
- bar with 3-layer spherical lens attached to the edge of the prism
- p/pi @ 7 GeV/c; 25 degree polar angle
- geometrical and TI reconstruction
- delta t selection with s = 0.5 ns
- with beam direction correction
- with per-PMT Cherenkov angle correction
Hit patter and propagation time for configuration with (top) and without (bottom) calibration laser:
Blue and red lines show propagation time without and with calibration laser, respectively.
Beam data with calibration laser in comparison to simulation as the function of laser intensity. X axis shows laser intensity in 100 ns window.
Time imaging: Trigger rates (GPIO 1 trigger 1 = ch 512; GPIO 2 trigger 2 = ch 513; GPIO6 Trigger box (LEVCON, NIM out) TRG cable from Trg1 (can be changed) or Laser cable (since 1.8.2018) = 517; GPIO 9 Trigger box (LEVCON, LVDS out) TRG cable from Trg1 (can be changed)) = ch 520. PiLas intensity 15.0% : PiLas intensity 13.2% :
