Difference between revisions of "Gain matching"

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==7/16/16==
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[[2nCor Equipment#2016-2017 IAC run on the 44 machine | Go back]]
PMT top and bottom is in coincidence with a trigger placed 3" below the CF-252 source.
 
  
PMT pulses are widened to 500 ns in electronics in order to avoid double counting.  
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==7/17/16==
 +
Information about the run setup can be seen  [[Signal cable timing|here]]  (thresholds, source positioning, ect).
  
 +
Each PMT was individually placed in coincidence with a trigger at the center of the room. High voltage was then adjusted on each PMT until all rates were equal.
  
Discriminator thresholds:
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{| border="1" style="text-align: center"
 
+
! colspan="2"|Detector
Trigger: 15 mv
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! rowspan="2" | PMT
 
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! rowspan="2"| High voltage
PMT's: 60 mv
+
|-
 
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| angle|| color
 +
|-
  
 +
| rowspan="2" | 30 
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| rowspan="2" | Red
 +
|Top 
 +
| -1424
 +
|-
 +
|Bot
 +
| -1458
 +
|-
  
{| border="1" style="text-align: center"
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| rowspan="2" | 90  
! colspan="2"|Detector || colspan="2"| Count rate at -1700 V (Hz) || rowspan="2"|Difference
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| rowspan="2" | Yellow
 +
|Top 
 +
| -1690
 
|-
 
|-
| angle|| color|| Source in || Source out
+
|Bot
 +
| -1597
 
|-
 
|-
| 30  || Red || 8.3 || 4.8 || 3.5
+
 
 +
| rowspan="2" | 150  
 +
| rowspan="2" | Blue
 +
|Top 
 +
| -1553
 
|-
 
|-
| 90  || Yellow || 2.4 || 0.6 || 1.8
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|Bot
 +
| -1595
 
|-
 
|-
| 150 || Blue || 3.7 || 1.67 || 2.0
+
 
|-
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| rowspan="2" | 225  
| D225  || Wood || 0.8 || 0.4 || 0.4
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| rowspan="2" | wood
 +
|Top 
 +
| -1700
 
|-
 
|-
 +
|Bot
 +
| -1678
 
|}
 
|}
 +
 +
 +
[[2nCor Equipment#2016-2017 IAC run on the 44 machine | Go back]]

Latest revision as of 07:15, 18 August 2016

Go back

7/17/16

Information about the run setup can be seen here (thresholds, source positioning, ect).

Each PMT was individually placed in coincidence with a trigger at the center of the room. High voltage was then adjusted on each PMT until all rates were equal.

Detector PMT High voltage
angle color
30 Red Top -1424
Bot -1458
90 Yellow Top -1690
Bot -1597
150 Blue Top -1553
Bot -1595
225 wood Top -1700
Bot -1678


Go back