Difference between revisions of "UnderGraduate Neutron Correlations Lab"

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[[https://wiki.iac.isu.edu/index.php/Main_Page]]
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[[Main_Page]]
  
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[[UNCL_DAQ]]
  
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[[PAS_Experiment]]
  
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NaI detector setup
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[[Attenuation_Measurements]]
  
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[[Logbook]]
  
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Creating ROOT data files
 
  
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[[3N_Corr]]
  
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[[Main_Page]]
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source ~/CODA/setup
 
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/home/daq/CODA/CODAreader/ROOT_V5.34/PAA/evio2nt -fr6815.dat > /dev/null
 
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Analyzing ROOT data file
 
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root -l r8735.root
 
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to draw a histogram for Peak ADC channel 4
 
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PAA->Draw("PADC.PADC785N[4]>>(4096,0,4096)")
 
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To scale the histogram using an energy calibration of 0.45 keV/channel
 
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PAA->Draw("PADC.PADC785N[4]*0.45>>(4096,0,4096)")
 
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To save thehistogram under the name Cs137
 
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PAA->Draw("PADC.PADC785N[4]*0.45>>Cs137(4096,0,4096)")
 
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To normalize the histogram by a run time of 2600 seconds
 
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1/3600=0.0002778
 
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Cs137->Scale(0.0002778)
 
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Cs137->Draw();
 
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run 6816 background (~300Hz)
 
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1/47 = 0.021277
 
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run 6817 signal (~600 Hz)
 
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1/75 =0.013333
 
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[[File:NaI_Cs137_4-22-21.png]]
 
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https://wiki.iac.isu.edu/index.php/File:NaI_Cs137_4-22-21.png
 
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=data 4/26/21=
 
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{| border="1"  |cellpadding="20" cellspacing="0
 
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|-
 
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|  Run Number || configuration
 
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|-
 
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|  6819  ||    Cs-137 source at location of Cf-252, no Cf-252 or Cd target in apparatus
 
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|-
 
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| 6820 ||  start time:  16:04:33  04/26/2021  Cs-137 out, Cd in , Cf-252 out. NaI at closest possible.  stop time: 16:08:34 (241 seconds)
 
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| 6821 ||  start time:  16:11:49  04/26/2021  Cs-137 out, Cd in , Cf-252 in , Poly thermalizer 1/2" in. NaI at closest possible.  stop time: 16:22:52  (663 sec)
 
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| 6822 ||  start time:  16:23:54  04/26/2021  Cs-137 out, Cd in , Cf-252 out , Poly thermalizer 1/2" in. NaI at closest possible.  stop time:16:34:38 (673 sec)
 
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| 6823 ||  start time: 16:35:44  04/26/2021  Cs-137 out, Cd out , Cf-252 out , Poly thermalizer 1/2" in. NaI at closest possible.  stop time:16:46
 
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| 6824 ||  start time: 16:35:44  04/26/2021  Cf-252 in , Poly thermalizer 1/2" in. ,Cd in sandwhich ,  NaI at closest possible.  stop time:16:46
 
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| 6825 ||  start time:  16:53:55 04/26/2021  Cf-252 in 6 in away, 1" lead,  , Poly thermalizer 1/2" in. ,Cd in sandwhich ,  NaI at closest possible.  stop time:16:54:58
 
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| 6826 ||  start time: 16:57:39  04/26/2021  Cf-252 in 6 in away, 2" lead,  , Poly thermalizer 1/2" in. ,Cd in sandwhich ,  NaI at closest possible.  stop time:16:58:49
 
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| 6827 ||  start time: 16:59:13  04/26/2021  Cf-252 in 6 in away, 2" lead,  , Poly thermalizer 1/2" in. ,Cd OUT sandwhich ,  NaI at closest possible.  stop time:17:00:15
 
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|}
 
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=data 5/3/21=
 
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Set up:
 
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* Lead: Detector surrounded on 4 sides by 1" lead.  Front end 4" of lead.  Back end exposed. 
 
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* Poly: Up to 40cm of green poly between lead and source (line-of-sight).  No poly elsewhere.
 
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{| border="1"  |cellpadding="20" cellspacing="0
 
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|  Run Number || configuration
 
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| 6829 || start time: 13:10:43 05/03/2021,  No source, 40cm poly.  end time: 13:17:55  counts=10164
 
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| 6830 || start time: 13:20:11 05/03/2021,  Source at 52cm from detector face, 40cm poly.  end time: 13:27:21  counts=10459
 
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| 6831 || start time: 14:08:49 05/03/2021,  Source at 52cm from detector face, 35cm poly.  end time: 14:16:17  counts=11007
 
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|}
 
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[[https://wiki.iac.isu.edu/index.php/Main_Page]]
 

Latest revision as of 22:38, 10 May 2021

Main_Page

UNCL_DAQ

PAS_Experiment

Attenuation_Measurements

Logbook


3N_Corr

Main_Page

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