Same plot with spike surgically removed and a gaussian fit to the central peak. The RMS is similar but the tails are larger in the data.
Event displays of MC events in the spike (no noise).
Comparison of distance-to-chamber for MC with and without noise. The effect of noise is to remove about 10% of all events, irrespective of whether or not they're in the spike.
Eric D. Zimmerman (firstname.lastname@example.org)