geometrical reconstruction j18

  • CERN 18
  • S403, bar with 3-layer spherical lens
  • protons, pions @ 7 GeV/c
  • geometrical reconstruction
  • delta t selection with 1.5 ns
  • photon count is within 50 mrad window around expected Cherenkov angle
  • vertical bar ambiguities are not considered

Photon yield:

Single photon resolution :

Cherenkov track resolution:

Separation: