Difference between revisions of "Preamp 3"

Revision as of 13:54, 16 April 2010

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

@@ Line 2: / Line 2: @@
 {| border="1" cellpadding="2"
 |-
-|width="415pt"|[[Image:preamp_3_new_cable.jpg|thumb|none|400px|new preamp and new cable (baseline adjusted), 1900V.]]
+|width="415pt"|[[Image:preamp_3_new_cable.jpg|thumb|none|400px|new preamp and new cable (baseline adjusted), cosmic rays, 50/50 Ar/CO2, 1900V]]
-|width="415pt"|[[Image:allold.jpg|thumb|none|400px|old preamp and old cable, 1900V.]]
+|width="415pt"|[[Image:allold.jpg|thumb|none|400px|old preamp and old cable, cosmic rays, 50/50 Ar/CO2, 1900V]]
 |-
 |}
 {| border="1" cellpadding="2"
 |-
-|width="415pt"|[[Image:preamp_3_old_cable.jpg|thumb|none|400px|new preamp and old cable, 1900V.]]
+|width="415pt"|[[Image:preamp_3_old_cable.jpg|thumb|none|400px|new preamp and old cable, cosmic rays, 50/50 Ar/CO2, 1900V.]]
 |-
 |}