Difference between revisions of "Neutron Time of Flight Test"

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=Verifying Neutron Detection=
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[[Verifying Neutron Detection]]
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[[Time of Flight Test]]
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This test included one detector and a collimated Cf-252 source.  The detector was placed 16 inches away from the source collimator.  Tests were performed with various thicknesses of poly in between the two. Each count was 5 minutes long and three counts were taken for each test.  Detector D was used at 1618 volts through channel 3 of LeCroy power supply and a threshold of 77mV set through the blue faced CFD. 
 
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{| border="1" cellpadding="20" cellspacing="0"
 
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|-
 
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|setup
 
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|1 poly block (4")
 
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|2 poly blocks (8")
 
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|3 ply blocks (12")
 
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|4 poly blocks (16")
 
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|no poly
 
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|background
 
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|background with detector shielded with 4" poly
 
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|-
 
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|test 1 counts
 
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|7180
 
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|5142
 
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|3945
 
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|3235
 
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|11793
 
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|1620
 
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|1314
 
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|-
 
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|test 2 counts
 
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|7291
 
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|5213
 
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|3994
 
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|3084
 
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|11694
 
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|1648
 
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|1336
 
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|-
 
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|test 3 counts
 
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|7319
 
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|5205
 
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|4014
 
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|3150
 
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|11872
 
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|1629
 
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|1352
 
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|-
 
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|averages
 
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|7263
 
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|5187
 
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|3984
 
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|3156
 
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|11786
 
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|1632
 
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|1334
 
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|-
 

Revision as of 15:08, 19 September 2008