I am simulating a proportional counter (just to study the basics and to make sure that I am using Garfield correctly) and getting a strange shape for the signals like below:
The top picture is when there is only 1 proton penetrating the detector, and the bottom picture is when 100 protons penetrating the detector.
These are raw current signals produced by Garfield with fC/ns on the y-axis and ns on the x-axis. I am trying to understand why these signals are shaped like that. I would expect the signal to have a sharp rise time and then a slower fall time from what I read in Knoll. So, I just want to make sure that I am not simulating this incorrectly. Here are the files that I use to produce the above data.
signal.cpp (5.5 KB)
isobutane_mobility.txt (379 Bytes)
Please let me know if more details are needed to explain my simulation.