Difference between revisions of "TODO"
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== Possible solutions to be confirmed == | == Possible solutions to be confirmed == | ||
| − | === The charge measured with random trigger is above 10fC, up to 50 fC === | + | ==== The charge measured with random trigger is above 10fC, up to 50 fC ==== |
This is due to few channels with very high noise: | This is due to few channels with very high noise: | ||
* FEB_label = 21, chip 2, channel 3 | * FEB_label = 21, chip 2, channel 3 | ||
| − | * FEB_label = 23, chip | + | * FEB_label = 23, chip 2, channel 26 |
* FEB_label = 36, chip 2, channel 3 | * FEB_label = 36, chip 2, channel 3 | ||
* FEB_label = 43, chip 2, channel 45 | * FEB_label = 43, chip 2, channel 45 | ||
| + | 3/4 of these channels (ch. 3 and 45) are located on the edge of the anode-FEB connector (see [[L2_FEB_pinout]]). | ||
| + | TO-DO: | ||
| + | * Check and confirm that removing these channels the very high charge noise disappears (for all runs) | ||
| + | * Check the FEB-anode connection | ||
| + | * Check the position of these FEBs --> are they close to some potential noise source? | ||
== Solved == | == Solved == | ||
* No signal from FEB 2 and 30 --> due to missing calibration files (raw data should be present) | * No signal from FEB 2 and 30 --> due to missing calibration files (raw data should be present) | ||
Revision as of 01:56, 28 May 2019
Contents
List of bug and problems[edit | edit source]
- Charge decrease as the threshold increases -> check noisy channel
- GemHit_time shows some holes -> check if it is fixed with tfine
- The reconstruction is too slow with event.C -> limited the reconstruction to the first 10k events
- The radius used on the L2 do not correspond to the real on
- µTPC disabled up to now
- Only 33% of the hits has a cluster on both sides of the L2, while in principle it should be 100% --> problem due to ROC?
- FEB from 0 to 15 are noisy at channel 62
- Peaking background on FEB=6 && channel = 62
Possible solutions to be confirmed[edit | edit source]
The charge measured with random trigger is above 10fC, up to 50 fC[edit | edit source]
This is due to few channels with very high noise:
- FEB_label = 21, chip 2, channel 3
- FEB_label = 23, chip 2, channel 26
- FEB_label = 36, chip 2, channel 3
- FEB_label = 43, chip 2, channel 45
3/4 of these channels (ch. 3 and 45) are located on the edge of the anode-FEB connector (see L2_FEB_pinout).
TO-DO:
- Check and confirm that removing these channels the very high charge noise disappears (for all runs)
- Check the FEB-anode connection
- Check the position of these FEBs --> are they close to some potential noise source?
Solved[edit | edit source]
- No signal from FEB 2 and 30 --> due to missing calibration files (raw data should be present)
