Log term test
description
Transcript of Log term test
Log term testJohan M., Vito P.16/12/2013
Setup
1 SRB (4chs)
MPOD
30 COVERs
The TestThe test consists to repeat every
minute a noise scan over 24h. HV on but no active gas
The TestThe test consists to repeat every
minute a noise scan over 24h. HV on but no active gas
Noise Scan ResultsIn order to study the behavior of our electronics in time we ar computing the weighted mean and sigma of each channel versus the time.
Noise Scan Results (Sigmas)
Noise Scan Results (Means)
Noise Scan ResultsIn order to study the behavior of our electronics in time we are computing the weighted mean and sigma of each channel versus the time. The mean variation is less than 1mV over 24h (no temperature or humidity monitoring).
Noise Scan ResultsIn order to study the behavior of our electronics in time we ar computing the weighted mean and sigma of each channel versus the time. The mean variation is less than 1mV over 24h (no temperature or humidity monitoring). Few (~8/~1800) runs are clearly deviating from the collective behavior, but inspecting them…
“Failing” Noise Scans
“Failing” Noise Scans
“Failing” Noise Scans
Future Plans The long term test we performed up
to now does not suggest problems in our apparatus.
Possible external sources of noise have been found (to be confirmed).
Possible baseline variations.The apparatus Johan prepared for the
test is ready to be extensively used. A fully comprehensive test will be
performed from January.