Award Data

Next-generation high-performance computing (HPC) hardware, such as the Intel Xeon Phi Knights Landing Many-Integrated-Core processor, provide new deep memory architectures that offer the promise of increased performance. The challenge in taking full advantage of this architecture is selecting which data structures will be placed in the high-bandwidth memory. Optimizing data structure placement in ...

Infrasound and seismic measurements are used by DTRA and the DoD for nuclear test monitoring, terrorist blast forensics, battle damage assessment, and environmental monitoring. However, these long wavelength physical signals are typically recorded through single-point sensors or sparse low density arrays. As a result, the critical signals of interest are often corrupted or masked by noise or inter ...

Supercapacitors have attracted considerable recent attentions due to their high-power density, and long cycle life. Unfortunately, the energy density of supercapacitors is too low to meet these applications requiring an energy supply for longer periods (hours or days). Storagenergy Technologies Inc. proposes to develop a superior all solid-state battery (ASSB) fabricated by additive manufacturing ...

A significant performance gap exists between the theoretical number of Floating Point Operations (FLOPS) that a HPC machine is capable of sustaining and the number of FLOPS realized by real-world HPC applications. One of the principle reasons for this gap is the parasitic work that computational processes must do to communicate with one another. It has been shown that this communication work can b ...

Experimental quantities of metastable Al-Mg solid solutions (Mg contents 10-50%) have been recently prepared using mechanical alloying. Such solid solutions are predicted to be a new type of metallic high energy density materials in which specific phasechanges are pre-programmed to occur at a desired temperature and trigger ignition of accelerate combustion rate of the fuel. Preliminary tests ha ...

Science based assessments of the response of systems and material to hostile nuclear environments require detailed verified material response and failure criteria for confident results. Consequently there is a need for the development of experimentaltechniques to measure low pressure equation of state parameters accurately and economically using radiation simulators. The development of a soft x- ...

The measurement of the variation of fluence from a Plasma Radiating Source (PRS) with polar angle is critical to the definition of the stimuli acting on an effects experiment using PRS diagnostics because in general experiments and diagnostics view thesource from different angles. The polar angle fluence distribution is controlled by the opacity of the pinch, which is a sensitive function of pinc ...

Present reflex triode (RT) design performance is limited by debris shield response. The shield designs were derived empirically to satisfy specific experiment requirements. Optimizing the RT design will double target dose. Debris shield deformation definesthe closest permissible location of the test object and therefore determines the maximum dose achievable. The deformation of the debris shield c ...

Survivable shields are a necessary part of many soft x-ray debris mitigation systems that provide ultra clean test environments for nuclear weapons effects testing. Existing test requirements demand ultra large area survivable shields (12 inch diameter).Existing designs are limited to relatively small areas at low fluences and/or impose severe x-ray attenuation penalties. A methodology for the d ...

THE PURPOSE OF THIS BRIEF STUDY IS TO REVIEW THE PRESENT STATUS OF ENHANCED RADIATION WEAPONS FROM A TECHNICAL, MILITARY, AND POLITICAL POINT OF VIEW, AND TO MAKE RECOMMENDATIONS REGARDING THE FUTURE OF THESE WEAPONS. THERE ARE A NUMBER OF INTERRELATED REASONS FOR UNDERTAKING SUCH A TASK AT THIS TIME. FOR A NUMBER OF REASONS THERE APPEARS TO BE A GENERAL RELUCTANCE TO CONTINUE THE ERW DEBATE AT TH ...