Below are some strip charts showing the rates in the Compton background detectors with 10 uA pulsed beam going straight-through (not through the chicane).
This is just a baseline for the upcoming first attempt to navigate through the chicane.
First figure shows the rate in the CsI detector installed in the (old) nominal photon detector position.
Second figure shows the rates in the 2 scintillators installed on the upstream end of the laser table (beam left and right of the pipe).
Third figure shows the rates in the 2 scintillators installed on the downstream end of the laser table (above and below beam pipe).