cm correction algorithm. observations: looking at the data for one analog link, a large fraction...
DESCRIPTION
Observations: The real high signal contribution is easily detected with a fixed threshold The contribution from the low signal to the average is much smaller ! Electronic Channel ADC Readout Chip 5 A3A2A1A0TRANSCRIPT
CM correction algorithm
Observations:• Looking at the data for one
analog link, a large fraction of the 32 strips are affected by the large signal deposit (example picture A3).
• A signal detection and masking for accurate CM calculation (CM=average) is required.
• Outliers can be masked in two many different ways:
– Detection with a fixed threshold (all strips fixed and the same threshold)
• For example signal is required to pass +10ADC counts after pedestal subtraction
– Detection with a second iteration and a fixed threshold (eg Average subtraction, threshold based signal masking, average calculation and subtraction
– Detection with variable thresholds, strip individual …
Electronic Channel
ADC
Read
out
Chip 5
A3A2A1A0
Observations:
• The real high signal contribution is easily detected with a fixed threshold
• The contribution from the low signal to the average is much smaller !
Electronic Channel
ADC
Read
out
Chip 5
A3A2A1A0
Observations:
• The real high signal contribution is easily detected with a fixed threshold
• The contribution from the low signal to the average is much smaller !
Electronic Channel
ADC
Read
out
Chip 5
A3A2A1A0
0
10
-10
20
30
-20