Difference between revisions of "Setup and tests"
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The pedestal mean was between 993 and 1365 channels at Aug 2008 with all channels working. | The pedestal mean was between 993 and 1365 channels at Aug 2008 with all channels working. | ||
| − | Now the pedestal mean is between 0 and 437 channels. This mean I have to move the baseline up a little bit... | + | Now the pedestal mean is between 0 and 437 channels. This mean I have to move the baseline up a little bit...but the spread of the mean did not change. |
Revision as of 18:44, 21 January 2009
Contents
First Fe-55 spectrum
Pedestal
The pedestal mean was between 993 and 1365 channels at Aug 2008 with all channels working. Now the pedestal mean is between 0 and 437 channels. This mean I have to move the baseline up a little bit...but the spread of the mean did not change.
Pedestals when the HVB is connected to the CDC
Pedestal vs time (1000 event runs) is plotted.
Channels 12-13-14 show some (signs of) problems:
Pedestals when HVB is not connected
Pedestal vs time (1000 event runs) is plotted.
Channels 12-13-14 show some (signs of) problems:
Some sample signals
Energy spectra (not tracked)
