Difference between revisions of "Preamp 4: Comparison of cosmic data with original preamp"

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The pictures below show ADC amplitude histograms for cosmic ray data with 50/50 Ar/CO2 gas mixture.  The maximum ADC amplitude for each event contributes one entry (at that amplitude) in the histogram.  These compare data taken using the old and new preamps - the "old" preamp is the original one and the "new" preamp is Preamp4, described in Table 2 row 2 of GlueX-doc-1364 and labelled 27.
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The pictures below show ADC amplitude histograms for cosmic ray data with 50/50 Ar/CO2 gas mixture (the maximum ADC amplitude for each event contributes one entry for that amplitude in the histogram).   
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These compare data taken using the old and new preamps - the "old" preamp is the original one and the "new" preamp is Preamp4, described in Table 2 row 2 of GlueX-doc-1364 and labelled 27.
  
 
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Revision as of 09:43, 9 June 2010

The pictures below show ADC amplitude histograms for cosmic ray data with 50/50 Ar/CO2 gas mixture (the maximum ADC amplitude for each event contributes one entry for that amplitude in the histogram).


These compare data taken using the old and new preamps - the "old" preamp is the original one and the "new" preamp is Preamp4, described in Table 2 row 2 of GlueX-doc-1364 and labelled 27.


2050V

old preamp, cosmics, 50/50 Ar/CO2, 2050V
new preamp, cosmics, 50/50 Ar/CO2, 2050V


2100V - the new preamp is saturating at this voltage

old preamp, cosmics, 50/50 Ar/CO2, 2100V
new preamp, cosmics, 50/50 Ar/CO2, 2100V