# 2009.10.27 Jason EEMC geometry: effect of removing new SMD layers

Monte-Carlo setup:

- One photon per event
- Disabled/Enabled new SMD layers (EXPS EBLS EFLS) in Jason geometry
**EEMC only and Full STAR**geometry configurations with 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 and notations (shown in the center of the plot):

**eemc-j**: EEMC only with Jason geometry file**full-j**: Full STAR with Jason geometry file**eemc-j-noL**: EEMC only with Jason geometry file (disabled 3-new SMD layers)**full-j-noL**: Full STAR with Jason geometry file (disabled 3-new SMD layers)

### Effect of removing SMD layers on SMD strips

**Figure 1:** Average number of SMD-u strips

**Figure 2:** Average number of SMD-v strips

### Effect of removing SMD layers on sampling fraction

**Figure 3:** distribution of 1x1 sampling fraction

**Figure 4:** distribution of 2x1 sampling fraction

**Figure 5:** distribution of 3x3 sampling fraction

**Figure 6:** 1x1 sampling fraction vs. thrown energy

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