Difference between revisions of "CDC old preamp then and now"
From GlueXWiki
| Line 1: | Line 1: | ||
Comparing old and new runs with the old preamp. The pictures below show ADC amplitude histograms for first Fe55 and then tracked and untracked 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) and energy spectra obtained by integrating the amplitude histograms. | Comparing old and new runs with the old preamp. The pictures below show ADC amplitude histograms for first Fe55 and then tracked and untracked 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) and energy spectra obtained by integrating the amplitude histograms. | ||
<br> | <br> | ||
| − | + | Fe55 | |
| − | + | <br> | |
| + | 2100V - Fe55 - amplitude, old preamp, 2009 (left) and 2010 (right) | ||
| + | |width="415pt"|[[Image:Fe_amplitude_2100V_old_preamp_30599.jpg|thumb|none|400px|amplitude: old preamp, 55Fe, 50/50 Ar/CO2, 2100V, 2009]] | ||
| + | |width="415pt"|[[Image:Fe_amplitude_2100V_old_preamp_30819.jpg|thumb|none|400px|amplitude: old preamp, 55Fe, 50/50 Ar/CO2, 2100V, 2010]] | ||
| + | |} | ||
Revision as of 15:51, 23 June 2010
Comparing old and new runs with the old preamp. The pictures below show ADC amplitude histograms for first Fe55 and then tracked and untracked 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) and energy spectra obtained by integrating the amplitude histograms.
Fe55
2100V - Fe55 - amplitude, old preamp, 2009 (left) and 2010 (right)
|}
Cosmics
2050V - cosmics - amplitude, old preamp, 2009 (left) and 2010 (right)
2050V - cosmics - energy, old preamp (left) and new preamp (right)
