Difference between revisions of "New HVB"
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<br>Fe55 with premixed 50/50 Ar/CO<sub>2</sub>, New preamp and new HVB, ADC half-range, for a range of HV<br> | <br>Fe55 with premixed 50/50 Ar/CO<sub>2</sub>, New preamp and new HVB, ADC half-range, for a range of HV<br> | ||
Left: max amplitude histogram; Right: energy<br> | Left: max amplitude histogram; Right: energy<br> | ||
− | + | Mean pedestal is around 455ch, this has been subtracted from the amplitude histogram so at 2200V it is the fADC saturating rather than the preamp. | |
{| border="0" cellpadding="2" | {| border="0" cellpadding="2" | ||
|width="400pt"| | |width="400pt"| |
Revision as of 10:59, 7 September 2010
Max amplitude histograms for
cosmics at 2100V with 50/50 Ar/CO2
Left: new preamp and new HVB, ADC half-range; right: old preamp and HVB, ADC full-range
Purple: untracked, blue: tracked (less of this with old preamp because of 2 dead central channels)
Cosmics with premixed 50/50 Ar/CO2, New preamp and new HVB, ADC half-range
Left: 2000V; Right: 2050V - NB expanded x-axis
Fe55 with premixed 50/50 Ar/CO2, New preamp and new HVB, ADC half-range, for a range of HV
Left: max amplitude histogram; Right: energy
Mean pedestal is around 455ch, this has been subtracted from the amplitude histogram so at 2200V it is the fADC saturating rather than the preamp.
The beginnings of a new HV efficiency plot
Scope traces for premixed 50/50 Ar/CO2