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Development of a Neutron Detector with Kinetic Energy Measurement Capability. Robert Johnson Faculty: Dr. Calvin Howell Grad Student: David Ticehurst. Motivation. Basic research in nuclear physics Scattering Reaction Transfer Reaction Charge Exchange Applications

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Robert johnson faculty dr calvin howell grad student david ticehurst

Development of a Neutron Detector with Kinetic Energy Measurement Capability

Robert JohnsonFaculty: Dr. Calvin HowellGrad Student: David Ticehurst


Motivation
Motivation Measurement Capability

  • Basic research in nuclear physics

    • Scattering Reaction

    • Transfer Reaction

    • Charge Exchange

  • Applications

    • Neutron Detection without using T.O.F method

    • Nuclear Security


Proven technology
Proven Technology Measurement Capability

  • Moderation and then Charge Exchange

    • Effective as neutron counter

    • Detection Efficiency: 40-45%

    • Timing on the order of μs

  • Scintillation

    • Effective neutron counter

    • Detection efficiency: 20-25%

    • Timing on the order of ns

    • Energy information using T.O.F techniques


Experimental set up
Experimental Set-up Measurement Capability

  • Two PMTs attached to a 10Boron loaded

    • Analog

      • MPD-4 -> TAC

    • Digital

      • Digitizer

  • Sources used

    • 22Na (Calibration/Testing)

    • 137CS (Calibration/Testing)

    • AmBe (Neutron Source)


Data acquisition ph
Data Acquisition(PH) Measurement Capability

Energy Resolution: 26%


Data acquisition psd
Data Acquisition(PSD) Measurement Capability

Pulse Shape Discrimination


Data acquisition ph vs psd
Data Acquisition(PH vs. PSD) Measurement Capability


Second pulse
Second Pulse Measurement Capability

  • Reaction

    • 10B + n -> 6Li + α + ϒ(480 keV)

  • Shows that all the energy in the initial reaction was released in the scintillator

  • Can only be detected with the digital set up


Results of time difference
Results of Time difference Measurement Capability

Time (ns)


Future plans
Future Plans Measurement Capability

Finish the code to analyze the PH, PSD of second pulse

Search for the alpha particles


References
References Measurement Capability

Knoll, Glenn F. Radiation Detection and Measurement. 4th ed. Hoboken: John Wiley & Sons, 2012. Print.


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