2009.11.23 New EEMC geometry (CVS v6.1): y2006 vs. y2009 STAR configurations
Monte-Carlo setup:
- Throwing one photon per event
- Compare new EEMC geometry in CVS for y2006 and 2009 configurations
- Full STAR geometry configurations with and without LOW_EM option
- Throw particles flat in eta (1.08, 2.0), phi (0, 2pi), and energy (5-35 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
- red: full STAR y2009, with/without LOW_EM, EEMC geometry
- black: full STAR y2006, with/without LOW_EM, EEMC geometry v6.1
Figure 1: EEMC sampling fraction (left) distribution (right) vs. thrown photon energy (1.2 < eta < 1.9; no pt cuts)
![](/STAR/files/userfiles/133/image/20091123/20091123_photons_y2009_y2006h_y2009LOW_EM_y2006hLOW_EM_eta120_190_pt70_200_profile1D_towSampling_geantEnergy.png)
Figure 2: EEMC sampling fraction (left) distribution (right) vs. thrown photon energy (1.2 < eta < 1.9; pt > 7GeV cut)
![](/STAR/files/userfiles/133/image/20091123/20091123_photons_y2009_y2006h_y2009LOW_EM_y2006hLOW_EM_eta120_190_pt70_200_hist1D_towSampling_log0_ptGt7.png)
Figure 3: 2x1/3x3 clustering
![](/STAR/files/userfiles/133/image/20091123/20091123_photons_y2009_y2006h_y2009LOW_EM_y2006hLOW_EM_eta120_190_pt70_200_hist1D_EtowRatio_2x1_3x3_log1.png)
Figure 4: Shower shapes
![](/STAR/files/userfiles/133/image/20091123/20091123_photons_y2009_y2006h_y2009LOW_EM_y2006hLOW_EM_eta120_190_pt70_200_shape_eta120_pt700_vPlane.png)
Figure 5: Shower shape ratios (v plane)
![](/STAR/files/userfiles/133/image/20091123/20091123_photons_y2009_y2006h_y2009LOW_EM_y2006hLOW_EM_eta120_190_pt70_200_shape_eta120_pt700_vPlane_ratio.png)
Figure 6: Shower shape ratios (u plane)
![](/STAR/files/userfiles/133/image/20091123/20091123_photons_y2009_y2006h_y2009LOW_EM_y2006hLOW_EM_eta120_190_pt70_200_shape_eta120_pt700_uPlane_ratio.png)
Figure 7: Pre-shower migration (1.2 < eta < 1.9; no pt cuts)
![](/STAR/files/userfiles/133/image/20091123/20091123_photons_y2009_y2006h_y2009LOW_EM_y2006hLOW_EM_eta120_190_pt70_200_hist1D_geantEta_log0.png)