robert johnson faculty: dr. calvin howell grad student: david ticehurst development of a neutron...
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Robert JohnsonFaculty: Dr. Calvin HowellGrad Student: David Ticehurst
Development of a Neutron Detector with Kinetic Energy Measurement Capability
MotivationBasic research in nuclear physics
Scattering Reaction Transfer Reaction Charge Exchange
Applications Neutron Detection without using T.O.F method Nuclear Security
Proven TechnologyModeration 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-upTwo 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)Energy Resolution: 26%
Data Acquisition(PSD)Pulse Shape Discrimination
Data Acquisition(PH vs. PSD)
Second PulseReaction
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
Time (ns)
Future PlansFinish the code to analyze the PH, PSD of
second pulse
Search for the alpha particles
ReferencesKnoll, Glenn F. Radiation Detection and
Measurement. 4th ed. Hoboken: John Wiley & Sons, 2012. Print.