Pion Meeting March 26 2021 11AM ET

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• Bluejeans link: 420 107 252
• Dial-in: 408-740-7256 (US), 888-240-2560 (US Toll Free), 408-317-9253 (Alternate number)

Agenda

1. Updates on pion detector studies (Elham) [1]
2. Beam generator simulations (Raj)

Attendance

David, Elham, Raj, Wouter

Minutes

• Elham: pion detector simulations with moller and pion generator
  • Effect of moving lucite detector inwards has a smaller effect than increasing donut outer radius on the pi/e photo-electron rate
    • Combination of 26 cm lead donut, with shorter (6cm) and shifted lucite (same inner edge of lucite) gives good result
  • Changing concrete and lead radial and longitudinal thickness independently:
    • • lead has most impact, but thinner lead at larger radial extent is also good
  • Showermax mirror box bug fixed and wall thickness reduced
    • no effect on ratios
  • Reduce thickness off donut support flanges from 0.75" to 0.01"
    • no effect on ratios
• Raj: pion detector simulations with beam generator
  • rates consistent with moller generator results from Elham
  • but photo-electron rates appear consistent with zero