time spread at panda dirc

Time spread of the photons as a function of polar angle.

  • PandaRoot simulations without field
  • configuration with narrow bars, 3 layer spherical lens, and 8 MCPs layout with ~17 mm gap
  • pions and kaons @ p = 3.5 GeV/c @ phi = 10.825 deg
  • time-imaging reconstruction with full-simulated pdfs
  • 30k tracks for pdf generation (per each particle species); 5k for determining separation
  • ~2 mrad tracking resolution
  • realistic time precision
  • QE=18(24)% and 26(32)% ( blue curve). CE=95%
  • spatial QE = 1

Example of time distribution at 22 deg:

Example of time distribution at 90 deg:

Example of time distribution at 96 deg:

Example of time distribution at 98 deg: