Below are the plots of rates for a 100nA beam on the polarized target. They include the inclusive electron rate and the photo production rate for each target material
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Some future improvements would be to add Fermi motion for nuclear targets. This would likely help with the fitting giving greater reach to high PT.
Below are the statistics limited results for the background ratio. The farm has been most of the week due to upgrades happening Friday-Saturday.
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Last week I had a problem with the photoproduction rates being too large. This was because I did not undo the equivalent quanta. That is the cross section per equivalent quanta was used (as is needed for fitting data reported experiments with varying Bremsstrahlung beams). Now the cross section for a given Bremsstrahlung beam is used, i.e., EQ = 1.
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The plots above show the Bremsstrahlung spectrum's deviation from 1/k, i.e., it is k times the spectrum. It is for rl=0.01 and 0.015 for two different models of the shape.
If it is properly normalized per equivalent quanta, both curves should be about 1 and their shapes are only a result of the radiator thicknesses.
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