2009.11.06 new EEMC geometry: Pure lead and new SMD layers

Monte-Carlo setup:

  • One photon per event
  • Disabled/Enabled SMD layers (EXPS EBLS EFLS) in Jason geometry
  • Alter the ELED block with pure lead
  • Full STAR geometry configurations with and without LOW_EM option
    (using Victor's geometry fix)
  • 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 (j-noEM,noL,Pb):
    full STAR y2006, no LOW_EM, Jason EEMC geometry without new SMD layers, pure lead in ELED block
  2. solid red (j-EM,noL,Pb):
    full STAR y2006, LOW_EM, Jason EEMC geometry without new SMD layers, pure lead in ELED block
  3. dashed/open black (j-noEM,Pb):
    full STAR y2006, no LOW_EM, Jason EEMC geometry with new SMD layers, pure lead in ELED block
  4. solid black (j-EM,Pb):
    full STAR y2006, LOW_EM, Jason EEMC geometry with new SMD layers, pure lead in ELED block

Sampling fraction of various EEMC layers (tower, SMD, pre1-,pre2-, post- shower)

Figure 1: Tower sampling fraction distribution

Figure 2: Tower sampling fraction vs. thrown energy

Figure 3: Tower sampling fraction vs. position of the thrown photon

Figure 4: Pre1, pre2, post and SMD sampling fraction distribution

Figure 5: Pre1, pre2, post and SMD sampling fraction vs. thrown energy

SMD shower shapes

Figure 6: SMD-v shower shapes

Figure 7: SMD-v shower shape ratios

Figure 8: Number of SMD-u strips

Figure 9: Number of SMD-v strips

Tower energy profile

Figure 10: Energy ractio of 2x1 to 3x3 cluster vs. gamma-jet data

Energy deposition in various EEMC layers vs. position of the thrown photon

Figure 11: Pre-shower1 energy

Figure 12: Pre-shower2 energy

Figure 13: Post-shower energy

Figure 14: SMD-v energy

Figure 15: Number of towers

LOW_EM option and pre-shower migration

Figure 16: Tower Sampling fraction: LOW_EM option and pre-shower migration