bar without lens

PID performance for configuration with the narrow bar and without lens, run 461. Optical grease as coupling material.

  • CERN 18
  • S461, bar, no lens, optical grease
  • p/pi @ 7 GeV/c
  • geometrical reconstruction
  • delta t selection with s = 0.5 ns
  • with per-PMT Cherenkov angle correction

Event display

Photon yield after GR

TI

Per-angle plots: