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"
 
 
 
|-
 
|setup
 
|1 poly block (4")
 
|2 poly blocks (8")
 
|3 ply blocks (12")
 
|4 poly blocks (16")
 
|no poly
 
|background
 
|background with detector shielded with 4" poly
 
|-
 
|test 1 counts
 
|7180
 
|5142
 
|3945
 
|3235
 
|11793
 
|1620
 
|1314
 
|-
 
|test 2 counts
 
|7291
 
|5213
 
|3994
 
|3084
 
|11694
 
|1648
 
|1336
 
|-
 
|test 3 counts
 
|7319
 
|5205
 
|4014
 
|3150
 
|11872
 
|1629
 
|1352
 
|-
 
|averages
 
|7263
 
|5187
 
|3984
 
|3156
 
|11786
 
|1632
 
|1334
 
|-
 

Revision as of 15:08, 19 September 2008