Difference between revisions of "Pre-production prototype HVB"

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*Recalibrated MFCs
 
*Recalibrated MFCs
 
*Outer plenum added to CDC prototype to prevent leaks
 
*Outer plenum added to CDC prototype to prevent leaks
*New modified HVB
 
 
*2050V
 
*2050V
 
*Modified preamp (preamp4 with terminating resistors removed)  
 
*Modified preamp (preamp4 with terminating resistors removed)  
 
*Comparison of pre-production modified CDC HVB prototype from manufacturer with modified HVB from Fernando (the two should be identical)
 
*Comparison of pre-production modified CDC HVB prototype from manufacturer with modified HVB from Fernando (the two should be identical)
  
 
+
Below: max amplitude histograms (left) and same integrated over 96ns (right) from 55Fe, new prototype HVB, cosmics rejected in software
Below: max amplitude histograms (left) and same integrated over 96ns (right) from 55Fe, new prototype HVB
+
 
{| border="0" cellpadding="2"
 
{| border="0" cellpadding="2"
 
|width="420pt"|
 
|width="420pt"|
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[[Image:run_31677_e.png|thumb|420px|Integrated amplitude histo for 55Fe, pre-production prototype HVB]]
 
[[Image:run_31677_e.png|thumb|420px|Integrated amplitude histo for 55Fe, pre-production prototype HVB]]
 
|}
 
|}
Below: max amplitude histograms (left) and same integrated over 96ns (right) from 55Fe, Fernando's modified HVB
+
Below: max amplitude histograms (left) and same integrated over 96ns (right) from 55Fe, Fernando's modified HVB, cosmics rejected in software
 
{| border="0" cellpadding="2"
 
{| border="0" cellpadding="2"
 
|width="420pt"|
 
|width="420pt"|
[[Image:run_31635_amp.png|thumb|420px|Max amplitude histo for 55Fe, Fernando's modified HVB]]
+
[[Image:run_31635_amp_track24.png|thumb|420px|Max amplitude histo for 55Fe, Fernando's modified HVB]]
 
|width="420pt"|
 
|width="420pt"|
[[Image:run_31635_e.png|thumb|420px|Integrated amplitude histo for 55Fe, Fernando's modified HVB]]
+
[[Image:run_31635_e_track24.png|thumb|420px|Integrated amplitude histo for 55Fe, Fernando's modified HVB]]
 
|}
 
|}

Revision as of 14:01, 17 June 2011

  • 50/50 mixed Ar, CO2 at 60 sccm
  • Recalibrated MFCs
  • Outer plenum added to CDC prototype to prevent leaks
  • 2050V
  • Modified preamp (preamp4 with terminating resistors removed)
  • Comparison of pre-production modified CDC HVB prototype from manufacturer with modified HVB from Fernando (the two should be identical)

Below: max amplitude histograms (left) and same integrated over 96ns (right) from 55Fe, new prototype HVB, cosmics rejected in software

Max amplitude histo for 55Fe, pre-production prototype HVB
Integrated amplitude histo for 55Fe, pre-production prototype HVB

Below: max amplitude histograms (left) and same integrated over 96ns (right) from 55Fe, Fernando's modified HVB, cosmics rejected in software

Max amplitude histo for 55Fe, Fernando's modified HVB
Integrated amplitude histo for 55Fe, Fernando's modified HVB