Award Data

The successful execution of the current high-capacity optical-networking environment, which supports supercomputing centers at the DOE national laboratories, requires adpative and finer-grained management/set-up of necessary bandwidth and low-delay paths between distributed applications. Whereas manual management techniques have been implemented in test beds and moderate-capacity networks, the ap ...

Workers performng deactivation and decommission activities in DOE facilities wear badges to measure exposure to beryllium. Currently, these badges are comprised of an air pump that draws in air to trap particulates on a filter cassette, which is then analyzed for beryllium. An ability to measure lower amounts of beryllium would be desirable because: (1) lower amounts of air could be sampled on ...

There are increasing demands to use high-beam-current, high-radio-frequency (RF) power, S-band cavities in existing and newly planned accelerator projects, in order to produce a very brilliant, broadband, coherent teraherz synchrotron radiation source (or for other purposes). For optimum performance, a critical technical challenge is to replace the present low-gap-voltage RF cavity with a very hi ...

The superconducting radio-frequency cavities being tested for use in the International Linear Collider are made from high purity niobium sheet metal, which has an inherent, performance-hindering "damaged layer." This surface layer is removed by acid treatments, which result in hydrogen contamination and necessitate high-temperature, vacuum heat treatments. This project will develop technology bo ...

The present state of the art for superconducting accelerating structures, needed for the International Linear Collider (ILC), has achieved a gradient of 35 MV/m. This project will design, develop, and demonstrate the Superconducting Traveling Wave Accelerating (STWA) Structure to further increase the gradient by a factor of 1.20-1.40. The STWA structure will operate at the same surface magnetic ...

This project will develop a diamond-based, cylindrical, dielectric accelerating (DLA) structure that can sustaining a record accelerating gradient greater than 600 MV/m, significantly in exess of the limits for conventional accelerating structures. The results will be applied to the development of next-generation accelerators with high efficiency and to the technology of cylindrical diamond eleme ...

This project will develop a broadband coupling section for the high-gradient dielectric loaded accelerator (DLA). The coaxial-type, DLA coupler design will avoid vacuum gaps between the dielectric sections and thus eliminate any points for potential radio frequency (RF) breakdown. It will allow the construction of a new type of dielectric-based accelerator structure that provides accelerating gr ...

Improved neutron dosimetry is needed to assure the safety of nuclear power plants. However, real-time spectrometers for measuring neutron dose at specific energy levels do not exist. Instead, the current state of the art relies on some type of installed neutron absorber, which must be physically removed and analyzed to obtain the energy-level specific dose. The removal process typically require ...

Wind turbine systems are increasingly being installed in extreme environments, which decrease the systems¿ efficiency and lifetimes. Two major issues affecting wind energy efficiency are blade fouling (from ice, salt, bugs, etc.) and damage from the harsh environment (corrosion, pitting from blowing sand, etc). For example, a 5% ice accumulation on the leading edge of the turbine can result in ...

Improvements in plasma processors used in industry can lead to greater efficiences, reduced energy use, and overall improvements in manufacturing. For example, in the deposition of metal-diamond-like carbon coatings on gears and other wear surfaces, the coatings are not reproducible enough to meet design standards; therefore, improvements in plasma process control are needed. This project will a ...