Difference between revisions of "Newest preamp"

Revision as of 08:29, 20 April 2011

50/50 mixed Ar, CO₂
Recalibrated MFCs
Outer plenum added to CDC prototype to prevent leaks
New modified HVB
2050V
Comparison of modified preamp (preamp4 with terminating resistors removed) and its predecessor (preamp4)

Below: cosmics with newest modified preamp (left) and preamp4 (right) Blue histograms are tracked hits.

Max amplitude histo for cosmics, new fADC, modified HVB, modified preamp, mixed 50/50 at 60 sccm 2050V

Max amplitude histo for cosmics, new fADC, modified HVB, mixed 50/50 at 60 sccm 2050V

Below: 55Fe spectra with preamp 4 and Struck ADCs set to half-range, 550mV

Max amplitude histo, 55Fe, 2050V, Struck fADC range 550mV

Max amplitude histo (x-axis expanded), 55Fe, 2050V, Struck fADC range 550mV

Integrated, 96ns, 55Fe, 2050V, Struck fADC range 550mV

Below: 55Fe spectra with newest preamp (preamp4 minus terminating resistors) and Struck ADCs set to full-range, 1.1V

Max amplitude histo, 55Fe, 2050V, Struck fADC range 1.1V

Max amplitude histo (x-axis expanded), 55Fe, 2050V, Struck fADC range 1.1V

Integrated, 96ns, 55Fe, 2050V, Struck fADC range 1.1V

@@ Line 3: / Line 3: @@
 *Outer plenum added to CDC prototype to prevent leaks
 *New modified HVB
-*Struck ADCs
 *2050V
-*Comparison of newest preamp (preamp4 with terminating resistors removed) and its predecessor (preamp4)
+*Comparison of modified preamp (preamp4 with terminating resistors removed) and its predecessor (preamp4)
+Below: cosmics with newest modified preamp (left) and preamp4 (right)   Blue histograms are tracked hits.
+{| border="0" cellpadding="2"
+|width="420pt"|
+[[Image:run_31646_thr5_amp6.png|thumb|420px|Max amplitude histo for cosmics, new fADC, modified HVB, modified preamp, mixed 50/50 at 60 sccm 2050V]]
+|width="420pt"|
+[[Image:run_31599_amp6.png|thumb|420px|Max amplitude histo for cosmics, new fADC, modified HVB, mixed 50/50 at 60 sccm 2050V]]
+|}
 Below: 55Fe spectra with preamp 4 and Struck ADCs set to half-range, 550mV