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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

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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

  • 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

  • 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

  • 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)

Energy Resolution: 26%


Data acquisition psd

Data Acquisition(PSD)

Pulse Shape Discrimination


Data acquisition ph vs psd

Data Acquisition(PH vs. PSD)


Second pulse

Second Pulse

  • 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

Time (ns)


Future plans

Future Plans

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

Search for the alpha particles


References

References

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


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