Photon Flux

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Photon Flux

• Progress Report,
• PrimEx Collaboration Meeting, 06/23/06
• A. Teymurazyan

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Electron Counting

• Electron rate determination (for all runs)
• by sampling with clock trigger
• by sampling out of time electrons
• A mechanism for simultaneous access to both
  (electron counting) methods and to the comparison
  between them.
• Event time recovery algorithm (result of faulty
  trigger supervisor)
• Dead time corrections
• Beam trip detection algorithm
• A algorithm for synchronization of flux and yield
  calculations

Done
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Electron Counting

• Comparison studies of the two (electron counting)
  methods

In Progress
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Relative Tagging Ratios

• Stability of relative tagging ratios over time
• Tagging ratio correction factors for the runs
  affected by leakage current (from Halls A and C)

Done
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Absolute Tagging Ratios

• TAC analysis algorithm finalized
• Preliminary analysis of TAC data conducted
• Beam leakage effects
• Position of collimator
• Effects of HYCAL alignment on tagging ratios
• Beam alignment
• Beam current dependance
• Preliminary Tagging Ratios are available (are in
  use)
• Monte Carlo of photon absorption in TAC runs
  (Oleksiy)
• Target photon absorption (Dan, Allan)

Done
In Progress
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Summary

• Photon Flux Calculation is in advanced stage
• It is time to start documenting things
• Expect to have things finalized by the eeeennd of
  the summer

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