Start Counter Cheat Sheet

3-D rendering

cross-section through barrel, 30-fold segmentation shown

• outer diameter of scattering chamber: 3.72″
  • radius = 4.7244 cm
• inner diameter of CDC: 6.89″
  • radius = 8.7503 cm
• scintillator thickness = 3 mm
• for a nominal radius of 7.5 cm (roughly that in the Monte Carlo)
  • segmentation of 30
    • scintillator width = 15.7 mm
  • segmentation of 40
    • scintillator width = 11.8 mm