Polarimeter 01 10 2011

• Used standard Geant4 process G4GammaConversion with G4LivermorePolarizedGammaConversionModel model for polarized photon conversion with all physics processes turned off for electrons and positrons.

• Results for 110 MeV photon are consistent with the result from what was shown in the publication by the authors of the model.

• Results for 4 GeV photon are consistent with the result from what was shown in the the studies by Yerevan group.

• Results for 9 GeV photon do not show any asymmetries.

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Azimuthal distribution of electrons from 110 MeV gamma conversions.

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Azimuthal distribution of electrons from 4 GeV gamma conversions. Left plot all energies, right plot is for symmetric pairs.

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Azimuthal distribution of electrons from 9 GeV gamma conversions. Left plot all energies, right plot is for symmetric pairs.