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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 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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  1. Development of a Neutron Detector with Kinetic Energy Measurement Capability Robert JohnsonFaculty: Dr. Calvin HowellGrad Student: David Ticehurst

  2. Motivation • Basic research in nuclear physics • Scattering Reaction • Transfer Reaction • Charge Exchange • Applications • Neutron Detection without using T.O.F method • Nuclear Security

  3. 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

  4. 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)

  5. Data Acquisition(PH) Energy Resolution: 26%

  6. Data Acquisition(PSD) Pulse Shape Discrimination

  7. Data Acquisition(PH vs. PSD)

  8. 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

  9. Results of Time difference Time (ns)

  10. Future Plans Finish the code to analyze the PH, PSD of second pulse Search for the alpha particles

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

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