Fig: TOT vs ADC for the same signal for 8 channels. ADC is in channels, 1 channel is app. 1 mV - but be aware that all timing signals have twice lower amplitude than the ADC signal (they are splitted by a passive splitters). So we actually study the performance on lower signals than cosmics (or mips). To get the "typical" range of signals from mips one should look at signals with ADC > 600 or TOT > 520. TOT is in channels.

For the 5th channel (3rd row left) the signals to ADDON (TOT) and CFD are moreover attennuated by 1:2 (to study performance of low signals).

• TOT vs ADC in channels (file to08331113743):
  

Fig: TOT vs time(LED)-time(CFD) for 8 channels, shows timewalk of the ADDON LED.

• TOT vs time(LED)-time(CFD) (file to08331113743):
  

Fig: upper: TOT vs time(LED)-time(CFD) for channel No.3 lower: time diff time(LED)-time(CFD) for 520 < TOT < 530
Estimated time resolution (now without time walk correction, just one TOT slice) is ~ 140 ps (sigma) - i.e. the same as with the pulse generator.

• time resolution LED-CFD on cosmics (file to08331185927):
  

Resolution for 16 channels (from 1 TOT cut 520 < TOT < 530):
channel number - resolution (ps)
0 146
1 143
2 131
3 137
4 135
5 164
6 132
7 131
8 126
9 142
10 137
11 135
12 167
13 120
14 141
15 129

• time resolution LED-CFD for 8 channels of cosmics (520 < TOT < 530):
  

-- PavelTlusty - 26 Nov 2008