Difference between revisions of "Setup and tests"
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|width="415pt"|[[Image:setup1.jpg|thumb|none|400px|Setup of the new prototype.]] | |width="415pt"|[[Image:setup1.jpg|thumb|none|400px|Setup of the new prototype.]] | ||
|width="415pt"|[[Image:setup2.jpg|thumb|none|400px|Setup of the new prototype.]] | |width="415pt"|[[Image:setup2.jpg|thumb|none|400px|Setup of the new prototype.]] | ||
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+ | = Fe-55 spectra = | ||
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+ | |width="415pt"|[[Image:fe55-amplit.jpg|thumb|none|400px|Fe-55 induced amplitude spectrum.]] | ||
+ | |width="415pt"|[[Image:fe55-energy.jpg|thumb|none|400px|Fe-55 induced energy spectrum.]] | ||
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Revision as of 14:02, 10 March 2009
Contents
First Fe-55 spectrum
Fe-55 spectra
HV-plateau curve and Noise vs HV
Different symbols are different channels/straws.
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)