Compton Meeting, February 19, 2013 (L210A)

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Agenda

Usual meeting room (L210A).

Analyzer

• BPM sensitivities - we had the wrong values in analyzer (so did Qweak) Qweak beam log 274.
  • Still need to look at a couple examples to examine impact.
• Scripts - any progress on the photon detector samples?

Laser

• Estimate of upper limit on "depolarization" of laser as it travels to IP (Paschke)

Photon Detector

• GEANT simulation updates
• "Analysis" updates (time dependence of slugs, etc.)
  • Time dependence of accumulator 0 by slug [1]

Electron Detector

• Systematic error from "floating CE" instead of floating Strip width.
  • Updated results shown at last meeting - improved constants: Edet log 483
  • Table of uncertainties in "independent" variables: Edet log 484
  • Plane-to-plane variation with no secondary electrons: Edet log 485
  • Plane-to-plane variation with secondary electrons: Edet log 486
  • Updated systematic error table: Edet log 487
  • For reference, some of Erik's original studies with fixed CE can be found here: Edet log 407
• Systematic examination of distribution of residuals for a given strip
  • Part 1: Edet log 488
  • Part 2: Edet log 489