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A new type of compact induction accelerator currently under development at the Lawrence Livermore National Laboratory (LLNL) promises to increase the average accelerating gradient by at least an order of magnitude over that of existing induction machines. The machine is based on the use of high gradient vacuum insulators and advanced dielectric materials and switches. The system, called the Diel ...

ADVANCES IN ELECTRONIC DEVICE TECHNOLOGY HAVE LED TO INCREASED PACKING DENSITIES WHILE POWER CONSUMPTION HAS DROPPED. IN GENERAL, THIS TREND IS BENEFICIAL TO AVIONICS AND SPACE APPLICATIONS EXCEPT THAT A NEW FAILURE MODE HAS ACCOMPANIED THIS MINIATURIZATION. IN HIGH ENERGY PARTICLE ENVIROMENTS, SUCH AS ENCOUNTERED IN SPACE, MICROELECTRONIC DEVICES HAVE BEEN SHOWN TO BE SUSCEPTIBLE TO TRANSIENT OR ...

A DEMONSTRATION WILL BE PERFORMED THAT WILL SHOW THE UTILITY OF REAL TIME ANIMATION OF NUCLEAR WEAPONS EFFECTS DATA. DATA DEPICTING THE PROPAGATION OF AN AIRBLAST, GROUND SHOCK AND CRATER FORMATION WILL BE SIMULTANEOUSLY ANIMATED ON A 3-D GRAPHICS WORKSTATION. RECENT ADVANTAGES IN COMPUTING HAVE MADE IT POSSIBLE TO RENDER 3-D SHADED IMAGES OF POLYGON DATA AT INCREDIBLE SPEEDS. BY USING EXISTING SO ...

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 ...

QUANTITATIVE VERIFICATION OF THE RESIDUAL IN-SITU STRESS FIELD WHICH CREATES THE CONTAINMENT CAGE IS NEEDED TO ASSESS THE FACTOR OF SAFETY AGAINST HYDRAULIC FRACTURING FROM THE CAVITY WALL. PHASE I WILL ESTABLISH THE FEASIBLITY OF DEVELOPING A PASSIVE STRESS GAUGE, ABSENT OF ACTIVE INSTRUMENTATION, AND CAPABLE OF RECORDING THE RESIDUAL IN-SITU STRESS FIELD IMMEDIATELY FOLLOWING THE NUCLEAR DEVICE ...

THE PROPOSED RESEARCH PROGRAM WILL STUDY SOIL-PILE FOUNDATION INTERACTION INDUCED BY THE DETONATION OF CONVENTIONAL WARPONS. THE ULTIMATE GOAL OF THE PROGRM IS TO ESTABLISH A SET OF GENERAL GUIDELINES FOR FOUNDATION DESIGN OF FUTURE STRATEGIC STRUCTURES AS WELL AS THE ASSESSMENT OF THE VULNERABILITY OF EXISTING STRUCTURES. THE PHASE I EFFORT WILL INVOLVE ANALYSIS OF THE EXISTING EXPERIMENTAL DATA, ...

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EXTRINSIC PHOTOCONDUCTIVITY SEMICONDUCTOR SWITCHES (PCSS) BASED ON CVD DIAMOND-FILM (DF) HAS BEEN DEVELOPED. DIAMOND MATERIAL POSSESSES SEVERAL ADVANTAGES SUCH AS HIGH THERMAL CONDUCTIVITY AND HIGH BREAKDOWN VOLTAGES. THE PCSS BASED ON CVD DIAMOND CAN BE SUPERIOR THAN ITS COUNTERPARTS (GAAS OR SI) BY EXPLOITING THESE ADVANTAGES. CONVENTIONAL PCSS'S BASED ON GAAS SUFFER FROM PROBLEMS SUCH AS THERMA ...

Predicting the response of building components to internal detonations is more complex than the corresponding task for external loads because of the more complex loading waveforms which include multiple reflections in the shock phase followed by a long duration pseudostatic loading that depends upon room venting. Add the possibility of additional impulsive loading from primary debris. We propose t ...