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]]
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PMT top and bottom is in coincidence with a trigger placed 3" below the CF-252 source.
 
  
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PMT pulses are widened to 500 ns in electronics.  
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==7/17/16==
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Information about the run setup can be seen  [[Signal cable timing|here]]  (thresholds, source positioning, ect).
  
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Discriminator thresholds:
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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.
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Trigger: 15 mv
 
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PMT's: 60 mv
 
  
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{| border="1" style="text-align: center"
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! colspan="2"|Detector
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! rowspan="2" | PMT
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! rowspan="2"| High voltage
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|-
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| angle|| color
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|-
  
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| rowspan="2" | 30 
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| rowspan="2" | Red
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|Top 
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| -1424
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|-
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|Bot
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| -1458
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|-
  
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{| border="1" style="text-align: center"
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| rowspan="2" | 90 
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! rowspan="2"|Detector ||rowspan="2"|Color || rowspan="2"| Signal cable labels || colspan="2"| Count rate at -1700 V (Hz) || rowspan="2"|Difference
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| rowspan="2" | Yellow
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|Top 
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| -1690
 
|-
 
|-
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| Source in || Source out
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|Bot
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| -1597
 
|-
 
|-
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| D30  || Red || D30T001 / D30B002|| 8.3 || 4.8 || 3.5
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| rowspan="2" | 150  
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| rowspan="2" | Blue
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|Top 
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| -1553
 
|-
 
|-
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| D90  || Yellow || D90T003 / D90B004|| 2.4 || 0.6 || 1.8
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|Bot
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| -1595
 
|-
 
|-
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| D150 || Blue || D150T005 / D150B006|| 3.7 || 1.67 || 2.0
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|-
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| rowspan="2" | 225  
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| D225  || Wood || D225T007 / D225B008|| 0.8 || 0.4 || 0.4
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| rowspan="2" | wood
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|Top 
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| -1700
 
|-
 
|-
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|Bot
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| -1678
 
|}
 
|}
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 +
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[[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

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