User name J. Singh
Log entry time 01:44:50 on November 8,2005
Entry number 159453
keyword=problem with compton coincidence rates?during compton run 12752, for the last 45 minutes or so, the rate associated with the coincidences between the electron and photon detectors has "looked normal" but is not correlated at all with the cavity power (compton laser turning on and off). see fig 1 for the stripchart.
red - cavity power
blue - electron rate
green - photon rate
burgundy - coincidence rate
see fig 2 for a zoomed in stripchart of when the problem started.
normally, all the rates drop to near 0 when the laser is off to measure background.
the run just ended. we'll start a new run after a coda reboot and see what happens
FIGURE 1
FIGURE 2
