Award Data

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 ...

We propose to develop a battery powered portable monitoring system capable of collecting and analyzing gamma spectra for specific radionuclides in the field. The system will consist of a high resolution cadmium telluride array detector and a small multichannel analyzer and data logger. The proposed monitoring system builds upon the design of the Ludlum Model 2350 Data Logger which is quite rugge ...

ACR proposes the development of novel composite systems for air burst munitions capable of releasing high temperature over an extended area. Investigation will use Fibrous Monolith (FM) processing and a cost-efficient, innovative reactive composite system to form an airburst system that will generate an expanding thermal cloud. The proposed FM system would have a cellular structure, consisting o ...

Power electronic and pulse power applications for land based and airborne systems require capacitors with increasingly higher energy and power density that can withstand higher operating and process tempertures. Electrochemical double layer and metal oxide capacitors can satisfy many of the energy density speccifications but due to high ESRs their power density is 100-1000 times lowe than require ...

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 ...

The objective of this research is to develop beta versions of tools for automatically migrating radiation effects predicted in TCAD level tools to compact modeling tools. This transition will enable compact models that possess radiation effects to be quickly generated, which can then be used in circuit design activity. This approach is a substantial improvement over the current ad hoc approaches. ...

Pulsed power systems for electric armament and compact weapons require increasingly smaller energy delivery systems and higher levels of reliability and component safety. Although new capacitor technologies such as double layer and electrostatic supercapacitors promise energy densities higher than 10J/cc, liquid impregnated film dielectrics with energy densities of 2.5J/cc, continue to be the sta ...

Various procedures have been proposed for evaluation/mitigation of the potential for progressive collapse in the design and/or retrofit process. These range from passive procedures that evaluate the redundancy of structures to limit failure through redistribution of gravitation loads after key elements such as columns have been removed to complete nonlinear finite element analyses of buildings sub ...

In Phase I of this effort we analyzed the structural response of a BLU 109 during typical penetration events. Based on these finite element results, we proposed and demsonstrated a simple robust concept for a passive penetrator sensor that identifies the material being penetrated and also correlates strongly with its underground trajectory. Such a sensor would obviously provide valuable informatio ...

The atmospheric transport and dispersion (ATD) model requirements for describing the environmental conditions that are most likely to occur on any given day, called the "typical day", are very unique. The model requirements are unique because the typical day requirements for ATD must be both typical in representing the most likely occurring condition of each variable and be mass-balanced across t ...