Award Data

65805 High rate energy storage devices, such as ultracapacitors, are a critical enabling technology for hybrid electric vehicles (HEV). The best electrode materials for use in electric double-layer capacitors (EDLC) possess three characteristics: (1) high surface area; (2) high electrical conductivity; and (3) surface area easily accessible by electrolyte. While ruthenium-based ultracapacit ...

65209 As distributed generation accounts for an increasing share of electrical power, real-time sensory information (to monitor voltage, current, power flow, power quality, etc.) that describes the status of each generation point is required to maintain reliable electrical grid operation and ensure safe maintenance practices. However, many of the monitoring points in today's electrical grid p ...

65884 In plasma wakefield acceleration, electron and laser beams emerge together from the plasma. A filter is required to separate the two beams and to provide electron beam diagnostics. The filter must be thin enough, so as not to impede the electron beam, and highly reflective, in order to perform the beam separation and to resist laser damage. This project will develop the required ...

65614 The quantum efficiency of a photocathode limits overall device performance in photomultiplier tubes used in nuclear physics research. This project will develop more efficient photocathodes using nanowire technology. In particular, the production of nanowire photocathodes will be optimized, and the physical mechanisms that control their performance will be identified. In Phase I, gol ...

65083 The field emission electron source is a key element in powerful electron microscopes that characterize matter on the atomic scale, but the brightness, coherence, and stability are no longer sufficient to investigate materials at the level of resolution demanded by modern industry. Specifically, brightness needs to be improved by a factor of ten, the energy spread needs to be decreased 2 ...

65565 This project will modify a laser-driven vacuum accelerator at Brookhaven National Laboratory to produce a train of ~4 fs electron bunches spaced by 35 fs that can be manipulated to have sheet-like transverse profiles. These microbunches can be used to generate intense accelerating fields in dielectric microstructures, and possibly allow the future design of a high energy electron-posi ...

65395 Efforts are underway to develop a high-gradient electron accelerator operating at 34 GHz, to be driven by a newly-developed radio frequency (rf) magnicon amplifier. Yet few corresponding high-power components have been developed to provide rf power manipulation and transmission between the magnicon and the accelerator. This project will develop a variety of high-power Ka-band rf c ...

65074 Continued progress in high-energy physics demands a new high energy electron-positron collider, which in turn requires new high-power, high-frequency radio frequency (RF) technology. Development of RF technology at 34.272 GHz could allow three times the accelerating gradient compared to 11.424 GHz. This project will develop a novel test device for subjecting RF structures at 34.272 GHz ...

65073 Continued progress in high-energy physics demands a new generation electron-positron collider, which in turn requires a new high-power, high-efficiency radio frequency (rf) source. The high peak rf power needed can only be generated using an rf pulse compressor. This project will develop a plasma switch to create an 11.4 GHz pulse with at least 0.5 GW peak power, along with novel mic ...

65072 The use of high thermal conductivity aluminum nitride (AlN) components can boost the performance of power electronic and microwave devices significantly. However, the lack of suitable metallization and brazing technologies, required to join the AlN components to each other and to metallic members, hampers AlN insertion into vacuum electron devices and power semiconductor packages. This ...