2009.10.13 Jason EEMC geometry: position correlations

Effect of added layers in Jason geometry file (ecalgeo.g23)

Monte-Carlo setup:

  • One photon per event
  • EEMC only geometry with 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

Added layer definition from Jason file:

  • EXPS is the plastic spacer in the shower maximum section
  • EBLS is the layer of material on the back (routing layers) of the SMD planes
  • EFLS is the layer of material on the front (G10, etc) of the SMD planes

Geometry configurations and notations (shown in the center of the plot):

  1. j-noLayers: Jason geometry: no EXPS, EBLS, EFLS
  2. j-back: Jason geometry, EBLS only
  3. j-front: Jason geometry, EFLS only
  4. j-spacer: Jason geometry, EXPS only
  5. j-all: Jason geometry, all new layers included
  6. geom-cvs geometry file from CVS after cAir bug fixed

cross section of 1st SMD plane labeled with "SUV" ordering

Note: u-v ordering scheme can be found here (Fig. 9-11)

Figure 1: Average number of SMD u-strip fired vs. thrown photon's (x,y)

Figure 2:Average number of SMD v-strip fired vs. thrown photon's (x,y)

Figure 3:Average SMD u-energy vs. thrown photon's (x,y)

Figure 4:Average SMD v-energy vs. thrown photon's (x,y)