Difference between revisions of "Preamp 4: Comparison of cosmic data with original preamp"
From GlueXWiki
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| − | 2100V | + | 2100V - the new preamp is saturating at this voltage |
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|width="415pt"|[[Image:cosmic_amplitude_2100V_old_preamp.jpg|thumb|none|400px|old preamp, cosmics, 50/50 Ar/CO2, 2100V]] | |width="415pt"|[[Image:cosmic_amplitude_2100V_old_preamp.jpg|thumb|none|400px|old preamp, cosmics, 50/50 Ar/CO2, 2100V]] | ||
|width="415pt"|[[Image:cosmic_amplitude_2100V_preamp4.jpg|thumb|none|400px|new preamp, cosmics, 50/50 Ar/CO2, 2100V]] | |width="415pt"|[[Image:cosmic_amplitude_2100V_preamp4.jpg|thumb|none|400px|new preamp, cosmics, 50/50 Ar/CO2, 2100V]] | ||
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Revision as of 09:39, 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 (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.
2050V
2100V - the new preamp is saturating at this voltage
