physics list comparision

Comparing photon yield using different physics lists.

  • 3-layer spherical lens with saphire, r=[62,36]
  • 3 mm pixels HIQ400, CE=95%
  • pions @ 6 GeV/c; theta = 45; phi = 0
  • 0.5 tracking resolution @ 6 GeV/c, 2.2 @ 1.2 GeV/c. See track resolution scan for more.
  • 100 ps time precision
  • geometrical reconstruction with averaged LUT from 15M photons
  • GR with per-PMT and chromatic corrections
  • 20k tracks for pdf generation (per each particle species); 10k for determining separation

Photon yield (without selection cuts) from 20k pi @ 6 GeV/c @ 45 degree polar angle. EM includes multiple scattering, ionisation, bremsstrahlung (e,mu), gamma conversion, compton scattering (gamma), photoelectric effects (gamma), pair production (mu), annihilation (e+). HAD includes elasitc, inelastic and absorption.

Stopping photons from secondaries:

Popagating all photons: