Difference between revisions of "Cf252 NaI detector test. 12 Apr 2012"

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[https://wiki.iac.isu.edu/index.php/PhotoFission_with_Polarized_Photons_from_HRRL go back]
 
  
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NaI detector, -1030V, 300 mV threshold on gate channel, signal ADC4
 
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{| border="1" cellspacing="0" style="text-align: center; width: 1000px "
 
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! scope="col" width="8%" | Run #
 
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! scope="col" width="15%" | source
 
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! scope="col" width="15%" | shielding
 
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! scope="col" width="8%" | cnts
 
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! scope="col" width="8%" | rate
 
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! scope="col" width="66%" | Comments
 
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|2775||Co-60 some distance away from NaI||2" Pb around, no front shielding|| || ||
 
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|2776||bkgd ||2" Pb around, no front shielding|| || ||
 
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|2777||Co-60 on NaI taped||2" Pb around, no front shielding || ||  ||clear 2 big 1.2 and 1.4 MeV peaks, small peak around 4.3 MeV
 
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Calibration 1.4 MeV/575 cnls = 0.00243 MeV/cnl
 
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|2778||bkgd||2" Pb around, no front shielding || ||41.75 Hz ||
 
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|2779||bkgd||all around 2" Pb around ||          ||15.74 Hz ||align="left"|good area around 2000-3800 channels
 
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|2780||Cf252||all around 2" Pb around||          ||12 kHz ||align="left"|Cf252 just in front of NaI
 
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|2781||Cf252||all around 2" Pb around||          ||5.4 kHz ||align="left"|Cf252 about 15 cm away from NaI
 
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|2782||Cf252||all around 2" Pb around||          ||1.1 kHz ||align="left"|Cf252 17" away from NaI
 
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|2784||Cf252||all around 2" Pb around||1,372,745 ||1,140 Hz ||align="left"|20 min run
 
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|2785||Cf252||all around 2" Pb around||153,508  ||129.5 Hz ||align="left"|20 min run. 2" Pb just after Cf252
 
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|2787||Cf252||all around 2" Pb around||1,231,537 ||1,024 Hz ||align="left"|20 min run. 2" Borated Poly just after Cf252
 
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|2788||Cf252||all around 2" Pb around||1,225,232 ||1,020 Hz ||align="left"|20 min run. 2" NoBorated Poly just after Cf252
 
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|2789||Cf252||all around 2" Pb around||          ||        ||align="left"|20 min run. 2" Pb, 2" Borated Poly just after Cf252
 
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[[File:Cf 2inchBoratedPoly infront.eps]]
 

Latest revision as of 16:01, 17 April 2012

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