CDC prototype more on timing 3

Latest approach to hit finding is as follows

1. Find a hit channel
   1. Calculate mean pedestal P_{m} & s.d. (sigma) for first 100 samples in 100 events (trigger is approx sample 200)
   2. Set a threshold T_{p} (eg 3.5 sigma) for further investigation, eg P_{m} + T_{p} , select events & channels where adc value exceeds this
   3. Calculate event pedestal P_{e} as mean of samples 90 to 190 in current event
   4. Select events where adc value goes over high threshold T_{h1} + P_{e} (T_{h1} ~ 5sigma)
2. Find time
3. Upsample data from samples 150 to 350 (max drift time + trigger time is approx sample 290)
4. Search forward to find point x1 where data goes above a not quite so high threshold T_{h2} + P_{e} where T_{h2} ~ 4sigma
5. Find a local pedestal a number of upsampled points (eg 15) before x1
6. Search backward from x1 to find point x2 where data goes below second not quite so high threshold T_{h2} + P_{e} where T_{h2} ~ 4sigma
7. Find a local pedestal a number of upsampled points (eg 15) before x1