Difference between revisions of "Setup and tests"
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|width="415pt"|[[Image:pedestal-ch13-pure.jpg|thumb|none|400px|Pedestal vs time (ch13).]] | |width="415pt"|[[Image:pedestal-ch13-pure.jpg|thumb|none|400px|Pedestal vs time (ch13).]] | ||
|width="415pt"|[[Image:pedestal-ch14-pure.jpg|thumb|none|400px|Pedestal cs time (ch14).]] | |width="415pt"|[[Image:pedestal-ch14-pure.jpg|thumb|none|400px|Pedestal cs time (ch14).]] | ||
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+ | = Old pedestals versus time Aug 2008 = | ||
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+ | |width="415pt"|[[Image:pedestal-ch12-old.jpg|thumb|none|400px|Pedestal vs time (ch1).]] | ||
+ | |width="415pt"|[[Image:pedestal-ch13-old.jpg|thumb|none|400px|Pedestal vs time (ch2).]] | ||
+ | |width="415pt"|[[Image:pedestal-ch14-old.jpg|thumb|none|400px|Pedestal cs time (ch3).]] | ||
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Revision as of 12:33, 22 January 2009
Contents
First Fe-55 spectrum
Check if 125 MHz clock is working with a 300 MHz block pulse input
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:
Old pedestals versus time Aug 2008
Some sample signals
Energy spectra (not tracked)