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User name miham
Log entry time 05:09:33 on April 29, 2009
Entry number 269640
This entry is a followup to: 269631
Followups:
- 269706 04/29/09 11:01 Katich Re: Lumi Problems
- 269786 04/29/09 17:14 X. Jiang Lumi voltage, only experts are allowed to change
Yawei noticed that Lumi signals 1 and 8 are saturated. We (who are
present) do not know exactly how to resolve this problem quickly.
Yawei has tried to increase the high voltage in the first signal,
but it didn't seem to help.
We have changed the HV back to the original values and started
another production run.
I would like to ask if we can play with the high voltages between the
runs i.e.: Can we *lower the high voltages* in one of the channels,
then take a whole production run (30min), meanwhile see what
happens and after it ends (the next iteration) adjust the HV a little bit
more.
Can we "destroy" good data taking with such an activity?
A copy of this log entry has been emailed to: yawei, deng, jkatich, brads, miham
Figure 1
