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Range 0 is selected for low energy events including the muon peak. Around 100 MeV is a distribution of events where either range 0 or 1 is selected. Above 130 MeV range1 is selected for both ends.
Measured energy and ADC range 0
Here is the reconstructed energy vs ADC 0+ and this is the reconstructed energy vs ADC 0-. A few Xtals reconstruct energies below a MeV. A few pathological Xtals can be identified here:
- layer 0 column 5 tower 8
This is the Xtal that shows the horizontal stripes between 500 and 600 ADC counts in the second plot. Both ADC0+ and ADC1+ show unusual distributions.
Xtals with LAC set to 0 from Zach:
tower | layer | column | face |
|---|
3 | 3 | 5 | 0 |
0 | 1 | 8 | 1 |
10 | 1 | 5 | 1 |
11 | 5 | 10 | 1 |
2 | 0 | 3 | 1 |
8 | 0 | 5 | 1 |
Removing those Xtals yields this plot for ADC 0+ - the twisters are gone. This list of xtals should probably be removed in these B30 runs in future analysis.
Shaped readout noise in B30
An example of shaped readout noise in a channel (red distribution). another one.
