A Conceptual CO Tool Design

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A Conceptual C/O Tool Design

X. Han and A. Shehata
Center for Engineering Applications of
Radioisotopes _at_ NCSU
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outline

• Overview
• MC Simulation
• Experiments
• Discussion and future work

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Overview

• Principle of classical C/O tool

• Drawback
• Low efficiency
• Low signal to Noise Ratio

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Hydrogen
DE of Oxygen
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Overview

• Principle of New C/O tool

? (6.13MeV)
16O(n,ngamma) 16O
n
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Overview

• Principle of New C/O tool

? (6.13MeV)
16O(n,ngamma) 16O
n
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Overview
z

• Principle of New C/O tool

Well Detector
Inside Detector
Output
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Monte Carlo simulation

• Neutron transportation
• Neutron reaction (inelastic scattering, etc.)
• Gamma rays generating process
• Gamma rays transportation
• Can be used to
• Calculate Coincidence spectra
• Optimize geometry detector arrangement

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Experiment treatment

• Two detector arrangement
• NaI (Well typed detector 4.4 cmX14.4 cm,
  Thickness 0.6393 cm Inside detector 2.54 cm X
  13.97 cm)
• BGO (well typed detector 9.5cm X 15.2 cm,
  thickness 2.2 cm inside detector 4.5 cm X
  15.8 cm)
• 24Na (1.368 MeV 2.754 MeV)

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• Experiment setup

Coincidence Unit
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• NaI detector arrangement

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A
B
Well detector
Inside detector
C
D
Inside detector
Well detector
NaI Detector arrangement
BGO Detector arrangement
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NaI detector arrangement
Neutron source 14 MeV
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Single spectra
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0.511
DE of 6.13 (O)
0.844 (Iron)
DE of 7.12 (O)
2.223 (H)
SE of 6.13 (O)
SE of 7.12 (O)
DE of 4.44 (C)
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DE of Oxygen
DE of Carbon
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Future work

• Optimization of BGO detector arrangement
• Measure the STD of Photoelectron peak for BGO
  detector

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END

• Thank you