Difference between revisions of "All 3 detectors working"

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Experimental cell setup after adding addition shielding:
 
Experimental cell setup after adding addition shielding:
  
[[Image:Apparatus October 2008.JPG|200 px]]
+
[[Image:Apparatus October 2008.JPG|300 px]]
 +
 
 +
Graph before shielding:
 +
 
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The number of counts for the gamma flash (Channels 2000-2500) = 818
 +
 
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The number of counts for the neutrons (Channels 2500-4096) = 256
 +
 
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Taking the ratio <math>\frac{gamma}{neutrons}</math> gives 3.19
 +
 
 +
[[Image:Before shielding.JPG | 300 px]]
 +
 
 +
 
 +
Graph after shielding:
 +
 
 +
The number of counts for the gamma flash (Channels 2000-2500) = 1127
 +
 
 +
The number of counts for the neutrons (Channels 2500-4096) = 187
 +
 
 +
Taking the ratio <math> \frac{gamma}{neutrons} </math> gives 6.03
 +
 
 +
[[Image:After shielding.JPG |300 px]]
 +
 
 +
[http://wiki.iac.isu.edu/index.php/October_15%2C_2008 Go Back]

Latest revision as of 06:32, 5 February 2009

Detector A: High Voltage = 1900V; Threshold = 5mV

Detector C: High Voltage = 1860V; Threshold = 10mV

Detector D: High Voltage = 1950V; Threshold = 5mV

Note: Really high background in the experimental cell, so more shielding was added: i.e. paraffin wax.

Experimental cell setup after adding addition shielding:

Apparatus October 2008.JPG

Graph before shielding:

The number of counts for the gamma flash (Channels 2000-2500) = 818

The number of counts for the neutrons (Channels 2500-4096) = 256

Taking the ratio [math]\frac{gamma}{neutrons}[/math] gives 3.19

Before shielding.JPG


Graph after shielding:

The number of counts for the gamma flash (Channels 2000-2500) = 1127

The number of counts for the neutrons (Channels 2500-4096) = 187

Taking the ratio [math] \frac{gamma}{neutrons} [/math] gives 6.03

After shielding.JPG

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