2009.11.16 Tests of EEMC geometry, version 6.1: lead vs. mixture

Monte-Carlo setup:

  • Throwing one photon per event
  • Compare EEMC geometry v6.1 with pure lead vs. mixture
  • Full STAR geometry configurations with and without LOW_EM option
  • Throw particles flat in eta (1.08, 2.0), phi (0, 2pi), and pt (6-10 GeV)
  • Using A2Emaker to get reconstructed Tower/SMD energy (no EEMC SlowSimulator in chain)
  • Vertex z=0
  • ~50K/per particle type
  • Non-zero energy: 3 sigma above pedestal

Geometry configurations

  1. dashed/open red: full STAR y2006, no LOW_EM, EEMC geometry v6.1 with pure lead
  2. solid red: full STAR y2006, with LOW_EM, EEMC geometry v6.1 with pure lead
  3. dashed/open black: full STAR y2006, full STAR y2006, no LOW_EM, EEMC geometry v6.1 with lead-ally mixture
  4. solid black: full STAR y2006, full STAR y2006, with LOW_EM, EEMC geometry v6.1 with lead-ally mixture

Figure 1: EEMC sampling fraction vs. thrown photon energy: