Detector 5 anneal 2012: Difference between revisions
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imported>Ayshih (Added tables of threshold changes (none)) |
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===Notes=== | |||
Notable issues since 2012 anneal: | Notable issues since 2012 anneal: | ||
* 2013 March 25: Detector 5 arced and then had an extended interval of high rates, which went on for about 1.5 hours before it quieted itself. The data from the noisy period was all at low energies. This is similar to a November 2011 anomaly that happened the same way, although that event did not quiet on its own. (Note that event was before the anneal.) In this case, no corrective action was taken at the time, although the HV will be dropped slightly in the near future. See [[Tohban Report 2013-03-27]] for a more thorough description and plots illustrating the problem. LG | * 2013 March 25: Detector 5 arced and then had an extended interval of high rates, which went on for about 1.5 hours before it quieted itself. The data from the noisy period was all at low energies. This is similar to a November 2011 anomaly that happened the same way, although that event did not quiet on its own. (Note that event was before the anneal.) In this case, no corrective action was taken at the time, although the HV will be dropped slightly in the near future. See [[Tohban Report 2013-03-27]] for a more thorough description and plots illustrating the problem. LG | ||
===D5 front slow LLD threshold history=== | |||
{| class="wikitable" | |||
|- | |||
| post 2012 anneal || 0x0C | |||
|} | |||
===D5 front fast LLD threshold history=== | |||
{| class="wikitable" | |||
|- | |||
| post 2012 anneal || 0x22 | |||
|} | |||
===D5 rear slow LLD threshold history=== | |||
{| class="wikitable" | |||
|- | |||
| post 2012 anneal || 0x30 | |||
|} | |||
===D5 rear fast LLD threshold history=== | |||
{| class="wikitable" | |||
|- | |||
| post 2012 anneal || 0x45 | |||
|} | |||
Revision as of 23:38, 17 March 2014
Notes
Notable issues since 2012 anneal:
- 2013 March 25: Detector 5 arced and then had an extended interval of high rates, which went on for about 1.5 hours before it quieted itself. The data from the noisy period was all at low energies. This is similar to a November 2011 anomaly that happened the same way, although that event did not quiet on its own. (Note that event was before the anneal.) In this case, no corrective action was taken at the time, although the HV will be dropped slightly in the near future. See Tohban Report 2013-03-27 for a more thorough description and plots illustrating the problem. LG
D5 front slow LLD threshold history
| post 2012 anneal | 0x0C |
D5 front fast LLD threshold history
| post 2012 anneal | 0x22 |
D5 rear slow LLD threshold history
| post 2012 anneal | 0x30 |
D5 rear fast LLD threshold history
| post 2012 anneal | 0x45 |