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Design And Evaluation Of A Unique Weighted-Sum-Based Anger Camera, Matthew W. Seals
Design And Evaluation Of A Unique Weighted-Sum-Based Anger Camera, Matthew W. Seals
Masters Theses
Anger camera imaging technology has become widely popular for neutron diffraction imaging due to recent shortages in Helium-3 (He-3). Research into neutron diffraction optimized Anger camera by the Oak Ridge National Laboratory (ORNL) detectors group has provided an alternative to He-3 Tube-based detectors with a high-resolution Anger camera. However, the cost of these high-resolution Anger camera technology can make it less attractive than He-3 tubes when a large Field of View (FOV) is desired. Currently, there is a need for a lower-cost alternative to this high-resolution anger camera. Further applications for Anger camera have become of interest with the advent …
Neural-Net-Based Imager Offset Estimation In Fieldable Associated Particle Imaging, Justin R. Powers-Luhn
Neural-Net-Based Imager Offset Estimation In Fieldable Associated Particle Imaging, Justin R. Powers-Luhn
Doctoral Dissertations
Associated particle imaging with deuterium-tritium generators has been demonstrated to be extremely useful in laboratory settings. The Oak Ridge National Laboratory Nuclear Materials Identification System is once such system. A portable imaging system with similar capabilities could be of value to non-destructive analysis of potentially hazardous items. A neural network modeled after the ResNet architecture was trained to predict the position of the detector array. The network was trained using an MCNP simulation of the NMIS system with the neutron array offset in two position and one rotation dimension. The final network was accurate to within 0.49cm, 0.66cm, and 0.66◦ …
Proton Therapy Facility Shielding, Hadyn M. Daugherty, Isaac C. Waaldschlager, Daniel S. Elkins, Alyxandria Wszolek, Rachel N. Gaudet
Proton Therapy Facility Shielding, Hadyn M. Daugherty, Isaac C. Waaldschlager, Daniel S. Elkins, Alyxandria Wszolek, Rachel N. Gaudet
Chancellor’s Honors Program Projects
No abstract provided.
Characterization Of Lithium-6 As A Commercial Helium-3 Alternative For Nuclear Safeguards And Security, Alexander Martin Okowita
Characterization Of Lithium-6 As A Commercial Helium-3 Alternative For Nuclear Safeguards And Security, Alexander Martin Okowita
Masters Theses
Helium-3 detectors are efficient, reliable neutron detectors, but their high demand has reduced their supply to a very miniscule level, making them very expensive. The goal of this project is to test and evaluate an alternative produced by industry. Current testing is being done with a Lithium Zinc Sulfide (6LiF:ZnS(Ag)) detector from Aspect used in their portal monitors.
There are three basic requirements for neutron detectors used in nuclear safeguards and security: 1) high absolute detection efficiency, 2) maintaining neutron detection efficiency when simultaneously exposed to a high gamma ray exposure rate, and 3) the ability to maintain …