Electron Analysis

Preliminary list of analysis tasks

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• 1. Singles data
  • a) examine normalized rate vs runlet for stability (strip by strip)
  • b) verify consistency between 1/3, 2/3 and 3/3 trigger (first for beam OFF runs)
  • c) repeat for production runs

• 2. Event mode data
  • a) stability of normalized rates vs runlet (strip by strips)
  • b) normalized tracking rates and multiplicity vs runlets
  • c) use 2/3 and 3/3 to examine strip efficiency
  • d) use strip efficiency to verify consistency between 1/3, 2/3 and 3/3 triggers
  • e) efficiency weighted rates
  • f) efficiency weighted rates vs Compton cross-section
  • g) automated Compton edge finder
  • h) use tracking to confirm offsets between planes
  • i) Check stability of offsets

• 3. Accum mode data
  • a) stability of normalized rates vs runlet (strip by strip)
  • b) efficiency weighted rates, compared to Compton cross section
  • c) asymmetry vs runlet (strip by strip)
  • d) asymmetry vs actual displacement of the electron (Compton edge position)
  • e) consistency between 1/3, 2/3 and 3/3 trigger types
  • [[f) noise subtraction and its effect on asymmetry and yield
  • g) polarization vs runlet
  • h) consistency between different methods of extracting polarization
    • i) Compton edge by eye, pol as the single parameter
    • ii) Automated Compton edge and pol as single parameter
    • iii) use both edge and zero crossing to determine polarization
    • iv) compare differential method with the integral method

• 4. Verify consistency between Fortran and C++ analyzers for most of these items.