Award Data

The development of high-current, short-duration pulses of electrons has been a challenging problem for many years. High current pulses are widely used in injector systems for electron accelerators, both for industrial linacs as well as high-energy accelerators for linear colliders. Short-duration pulses are also used for microwave generation, in klystrons and related devices, for injectors to perf ...

THIS RESEARCH WILL EXPLORE THE POSSIBILITIES AND RESULT IN THE DESIGN OF AN ACOUSTIC ENERGY GENERATOR FOR GEOPHYSICAL EXPLORATION IN INACCESSIBLE MOUNTAINOUS TERRAIN. THIS EFFORT WILL DETERMINE THE MAGNITUDE OF ACOUSTIC SIGNAL REQUIRED AND WILL DEVELOP A TECHNIQUE FOR COUPLING THE SIGNAL GENERATOR TO THE EARTH. THE COUPLING TECHNIQUE WILL EXAMINE FORCES OTHER THAN GRAVITY TO ENSURE THAT THE SIGNAL ...

III-V semiconductors based solar cells display the highest sunlight conversion efficiency. Nevertheless, the material cost of current III-Vs and their fabrication process is very high which impedes their use for flat panel, large market applications. This project aims to explore, evaluate and implement defect tolerant high efficiency tandem solar cells based on more earth abundant III-V materials ...

One effective way to lower the weight, thus decreasing the carbon fiber usage and lowering the cost, of a CFRP tank is to improve the mechanical properties of the CFRP composite resin matrix using nano-reinforcement. Using the resin matrix itself as a source of composite strength, along with the carbon fiber reinforcement, results in a tank that requires less carbon fiber material. This solution d ...

180 Ultra-Lightweight Carbon-Carbon Cooling Structure For Pixel and Silicon Strip Detectors-HYTEC, Inc., 110 Eastgate Dr., Suite 100, Los Alamos, NM 87544-3304; (505) 662-0080 Mr. William O. Miller, Principal Investigator Mr. William O. Miller, Business Official DOE Grant No. DE-FG03-97ER82397 Amount: $75,000 Removal of heat from the next generation of particle detection systems used in high ...

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Difficulties associated with thick lithium-diffused entrance windows on the outside of p-type coaxial and point-contact germanium gamma-ray detectors have always been a technical hindrance. The lithium dead layer limits the low-energy detection range and adds background in the energy spectrum, thereby limiting commercial access to application areas including pure-science measurements, programmatic ...

COALESCING THE FRAGMENTED INFORMATION ASSOCIATED WITH EACH EVENT OF A HIGH-ENERGY PHYSICS DETECTOR AND THEN PROCESSING IT AT THE RATES DEMANDED BY ACCELERATOR SYSTEMS ARE AMONG THE LARGEST CHALLENGES IN THE PHYSICS COMMUNITY. NEW DETECTOR SYSTEMS CONTINUE TO INCREASE THE NUMBER OF MEASURED PARAMETERS AND SIMULTANEOUSLY INCREASE THE RESOLUTION OF DETECTOR COMPONENTS SO THAT THE VOLUME OF GENRATED ...

THE MAJOR LIMITING RELIABILITY COMPONENT OF CRYOGENIC SYSTEMS HAS ALWAYS BEEN SEALS. BESIDES CONTRIBUTING TO GAS CONTAMINATION AND DEBRIS PARTICLE ACCUMULATION, SEALS HAVE PHYSICALLY FAILED; AS A RESULT, SEALS HAVE BEEN RESPONSIBLE FOR THE MAJORITY OF FAILURES OCCURRING IN CRYOGENIC LIQUIFICATION AND REFRIGERATION SYSTEMS. A POTENTIALLY VIABLE SOLUTION IS THE DEVELOPMENT OF LONG-LIFE CRYOGENIC SEA ...

High energy density laboratory plasmas (HEDLP) present unique opportunities for the extraction of clean energy from Fusion. Intense lasers and particle beams can create and interact with such plasmas, potentially yielding sufficient energy to satisfy all our national needs. However, few models are available to help aid the scientific community in the study and optimization of such interactions. Th ...