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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[[DAQ]]
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[[UNCL_DAQ]]
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[[PAS_Experiment]]
  
 
[[Attenuation_Measurements]]
 
[[Attenuation_Measurements]]
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NaI detector setup
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[[3N_Corr]]
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Creating ROOT data files
 
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source ~/CODA/2.6.2/setup
 
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source src/root/root-5.34.00/bin/thisroot.csh
 
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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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=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 up to 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 || 05/03/2021,  No source, 40cm poly, 4" lead.   
 
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start time: 13:10:43, end time: 13:17:55, duration: 432 s, counts=10164
 
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counts/sec: 23.528
 
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| 6830 || 05/03/2021,  Source at 52cm from detector face, 40cm poly, 4" lead. 
 
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start time: 13:20:11, end time: 13:27:21, duration: 430 s, counts=10459
 
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counts/sec: 24.323
 
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| 6831 || 05/03/2021,  Source at 52cm from detector face, 35cm poly, 4" lead.
 
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start time: 14:08:49, end time: 14:16:17, duration: 448 s, counts=11007
 
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counts/sec: 24.569
 
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| 6832 || 05/03/2021,  Source at 52cm from detector face, 30cm poly, 4" lead. 
 
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start time: 14:17:28, end time: 14:24:21, duration: 413 s, counts=10128
 
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counts/sec: 24.523
 
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| 6833 || 05/03/2021,  Source at 52cm from detector face, 25cm poly, 4" lead.   
 
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start time: 14:25:48, end time: 14:32:37, duration: 409 s, counts=10112
 
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counts/sec: 24.723
 
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| 6834 || 05/03/2021,  Source at 52cm from detector face, 20cm poly, 4" lead.
 
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start time: 14:34:10, end time: 14:41:01, duration: 411 s, counts=10210
 
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counts/sec: 24.841
 
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| 6835 || 05/03/2021,  Source at 52cm from detector face, 15cm poly, 4" lead.
 
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start time: 14:42:11, end time: 14:48:59, duration: 408 s, counts=10181
 
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counts/sec: 24.953
 
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| 6836 || 05/03/2021,  Source at 52cm from detector face, 10cm poly, 4" lead.
 
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start time: 14:49:59, end time: 14:56:45, duration: 406 s, counts=10344
 
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counts/sec: 25.478
 
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| 6837 || 05/03/2021,  Source at 52cm from detector face, 5cm poly, 4" lead.
 
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start time: 14:57:52, end time: 15:04:39, duration: 407 s, counts=10890
 
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counts/sec: 26.757
 
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| 6838 || 05/03/2021,  Source at 52cm from detector face, 0cm poly, 4" lead.
 
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start time: 15:05:46, end time: 15:12:49, duration: 423 s, counts=12380
 
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counts/sec: 29.267
 
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| 6839 || 05/03/2021,  Source at 52cm from detector face, 0cm poly, 3" lead.
 
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start time: 15:15:28, end time: 15:21:07, duration: 339 s, counts=10267
 
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counts/sec: 30.286
 
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| 6840 || 05/03/2021,  Source at 52cm from detector face, 0cm poly, 2" lead.
 
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start time: 15:22:29, end time: 15:28:02, duration: 333 s, counts=11390
 
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counts/sec: 34.204
 
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| 6841 || 05/03/2021,  Source at 52cm from detector face, 0cm poly, 1" lead.
 
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start time: 15:30:15, end time: 15:33:44, duration: 209 s, counts=10311
 
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counts/sec: 49.335
 
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| 6842 || 05/03/2021,  Source at 52cm from detector face, 0cm poly, 0" lead.
 
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start time: 15:35:55, end time: 15:36:28, duration: 33 s, counts=21640
 
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counts/sec: 655.76
 
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[[https://wiki.iac.isu.edu/index.php/Main_Page]]
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[[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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