Difference between revisions of "Preamp 4: Comparison of 55Fe data with original preamp"
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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. | 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. | ||
− | <br>Amplitude<br> | + | <br>Amplitude - original (left) and new (right) preamps<br> |
− | 1900V | + | |
+ | <br> | ||
+ | |||
+ | 1900V - added June 14 | ||
{| border="1" cellpadding="2" | {| border="1" cellpadding="2" | ||
|width="415pt"|[[Image:Fe_amplitude_1900V_old_preamp.jpg|thumb|none|400px|amplitude: old preamp, 55Fe, 50/50 Ar/CO2, 1900V]] | |width="415pt"|[[Image:Fe_amplitude_1900V_old_preamp.jpg|thumb|none|400px|amplitude: old preamp, 55Fe, 50/50 Ar/CO2, 1900V]] | ||
|width="415pt"|[[Image:Fe_amplitude_1900V_preamp4.jpg|thumb|none|400px|amplitude: new preamp, 55Fe, 50/50 Ar/CO2, 1900V]] | |width="415pt"|[[Image:Fe_amplitude_1900V_preamp4.jpg|thumb|none|400px|amplitude: new preamp, 55Fe, 50/50 Ar/CO2, 1900V]] | ||
|} | |} | ||
+ | |||
<br> | <br> | ||
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<br> | <br> | ||
− | + | 2050V | |
{| border="1" cellpadding="2" | {| border="1" cellpadding="2" | ||
− | |width="415pt"|[[Image: | + | |width="415pt"|[[Image:Fe_amplitude_2050V_old_preamp.jpg|thumb|none|400px|amplitude: old preamp, 55Fe, 50/50 Ar/CO2, 2050V]] |
− | |width="415pt"|[[Image: | + | |width="415pt"|[[Image:Fe_amplitude_2050V_preamp4.jpg|thumb|none|400px|amplitude: new preamp, 55Fe, 50/50 Ar/CO2, 2050V]] |
|} | |} | ||
− | <br>Energy<br> | + | <br>Energy - original (left) and new (right) preamps<br> |
1900V | 1900V | ||
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<br> | <br> | ||
− | + | 2050V | |
{| border="1" cellpadding="2" | {| border="1" cellpadding="2" | ||
− | |width="415pt"|[[Image: | + | |width="415pt"|[[Image:Fe_energy_2050V_old_preamp.jpg|thumb|none|400px|energy: old preamp, 55Fe, 50/50 Ar/CO2, 2050V]] |
− | |width="415pt"|[[Image: | + | |width="415pt"|[[Image:Fe_energy_2050V_preamp4.jpg|thumb|none|400px|energy: new preamp, 55Fe, 50/50 Ar/CO2, 2050V]] |
|} | |} |
Latest revision as of 13:21, 14 June 2010
The pictures below show ADC amplitude and energy histograms for 55Fe data with 50/50 Ar/CO2 gas mixture (the maximum ADC amplitude for each event contributes one entry for that amplitude in the histogram; the energy spectra were obtained by integrating the event amplitude after pedestal subtraction).
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.
Amplitude - original (left) and new (right) preamps
1900V - added June 14
1950V
2000V
2050V
Energy - original (left) and new (right) preamps
1900V
1950V
2000V
2050V