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Abstract
We have analyzed data recorded by the streak cameras at the CERN AWAKE experiment on 10 September 2017. We have discriminated between streak plots of proton bunches propagating through plasma and those that propagate through neutral Rubidium vapor. We have also removed from consideration misleading data. We have aligned the 73ps streak plots to produce 375ps plots. We have divided these element-wise to learn how the charge distribution varies when protons propagate through plasma, versus a neutral gas.
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