Award Data

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 ...

This proposal describes the development of a generalized toolkit that enables improved and automated mapping of partitioned subdomains onto available distributed compute nodes for applications operating within pure-MPI or hybrid-MPI parallel runtime environments. This toolkit may be invoked either as an independent pre-processing step or as a dynamic library, improving an applications real-time do ...

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 ...

Standoff detection of nuclear materials continues to be one of the most critical tasks that security specialists must confront in a wide variety of applications, both military and civilian. There have been several approaches for standoff nuclear material detection. Each of them utilizes a different fundamental property of nuclear materials to improve the sensitivity of detection. In this SBIR prog ...

DTRA and other DoD agencies are currently seeking earth penetrators with higher efficiency for reaching deeply buried targets. Current penetrator materials and designs suffer from high levels of frictional drag, unbalanced resistance due to lateral forces and localized melting of the warhead leading to shape change and further instability. General Sciences, Inc. (GSI) has developed a method for en ...

Orora Design Technologies proposes to develop electronic design automation (EDA) tools employing minimally invasive circuit design-based methods to mitigate single event effects (SEEs) for next generation Ultra-DSM CMOS (

Analysis of nuclear material samples in the field has many advantages over laboratory analysis. Laboratory analyses can be slow, involve increased expense, lead to additional waste generation and disposal problems, and may introduce errors due to sample degradation or mishandling. In situ analysis mitigates all of these problems. The specific aim of this project is the development of a truly por ...

THE WORK PROPOSED IN THIS EFFORT IS DIRECTED TOWARDS DETERMINING THE CORRELATION BETWEEN OBSERVED AIRBORNE RADIOIODINE CONCENTRATIONS IN THE AUXILIARY AND FUEL HANDLING BUILDINGS AT TMI-2 FOLLOWING THE ACCIDENT IN 1979 WITH DIURNAL TEMPERATURE VARIATIONS. APPROXIMATELY 5000 MEASUREMENTS WERE MADE DURING THE PERIOD APRIL-JULY, 1979 INDESIGNATED AREAS OF THE AUXILIARY/FUEL HANDLING BUILDING AND THE ...

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THIS PROGRAM DEALS WITH THE EVALUATION OF LIQUID LEVEL DETECTION DATA OBTAINED DURING THE MT-4 EXPERIMENT, WHICH IS THE LAST TEST PERFORMED IN THE LOCA SIMULATION IN NRU REACTOR PROGRAM. THESE DATA OFFER THE POTENTIAL OR RELATINGTHE ONLY FULL-LENGTH IN REACTOR REFLOOD INFORMATION ON N NUCLEAR-POWERED PWR FUEL BUNDLES TO COLLAPSED LIQUID LEVEL AND TWO-PHASE COOLING OF DEFORMED AND RUPTURED FUEL BUN ...