The pictures below show oscilloscope traces for gas mixture 50/50 Ar/CO2, all are shaper output.
 new preamp and new cable (baseline adjusted), cosmic rays, 50/50 Ar/CO2, 1900V |
 old preamp and old cable, cosmic rays, 50/50 Ar/CO2, 1900V |
 new preamp and old cable, cosmic rays, 50/50 Ar/CO2, 1900V. |
The following were obtained with increased anode voltages.
55Fe source
 new preamp, 55Fe, 50/50 Ar/CO2, 2000V |
 old preamp, 55Fe, 50/50 Ar/CO2, 2000V |
Cosmic rays
 new preamp, cosmic rays, 50/50 Ar/CO2, 2000V |
 old preamp, cosmic rays, 50/50 Ar/CO2, 2000V |
55Fe source
 new preamp, 55Fe, 50/50 Ar/CO2, 2100V |
 new preamp, 55Fe, 50/50 Ar/CO2, 2100V (as left, for longer) |
 old preamp, 55Fe, 50/50 Ar/CO2, 2100V |
 old preamp, 55Fe, 50/50 Ar/CO2, 2100V (as left, for longer) |
Cosmic rays
 new preamp, cosmic rays, 50/50 Ar/CO2, 2100V |
 new preamp, cosmic rays, 50/50 Ar/CO2, 2100V (as left, for longer) |
 old preamp, cosmic rays, 50/50 Ar/CO2, 2100V |
 old preamp, cosmic rays, 50/50 Ar/CO2, 2100V (as left, for longer) |
55Fe source
 new preamp with 50/50 Ar/CO2, 2200V blue: ch15 (source above this), yellow: ch16 (neighbor) Peaks are approx 500ns apart |
