Award Data

Political, economic, and environmental considerations require that the national dependence on petroleum-based transportation fuels, especially imported oil, be reduced by accelerating the development of domestic renewable alternatives. The United States has the potential to generate, sustainably, about 1.3 billion dry tons of biomass per year, and bio-oil derived from this renewable feedstock cou ...

With the depletion of fossil fuel reserves and a global requirement to develop a sustainable economy, hydrogen-based energy is becoming increasingly important. In the transportation sector, on-board storage of pure hydrogen may be required at pressures up to 10,000 psi, with compression of the hydrogen fuel ranging to 12,000 psi or even higher. However, the level of maturity of current hydrogen ...

Dielectric structures driven by wakefields or external radio frequency (RF) are presently being considered as a promising technique for next generation linear colliders. This project will develop dielectric-loaded wakefield accelerating structures that can be adjusted in frequency using a bias electric field. This technique can be used to compensate for nonuniformities in dielectric structures, ...

The single bunch-beam-breakup instability (BBU) is a potentially serious limitation on the performance of advanced accelerators, particularly those based on the wakefield principle. This project will develop mitigation techniques for BBU, using both experimental and high performance simulation tools. Three representative high performance wakefield devices will be studied experimentally at the Ar ...

In normal-conducting high gradient accelerating structures, designs are moving toward higher frequencies. The same is true for other microwave applications like radar or communications. This project will develop a new high power radio frequency (RF) source that covers the frequency spectrum from Ku to low Ka band (20-30 GHz). In particular, a prototype power extraction structure will be experime ...

Superconducting radio frequency (RF) technology has been recommended recently as the basis for the accelerating structures of the International Linear Collider (ILC). The present state of the art in superconducting structures has achieved a gradient of 35 MV/m. This project will design, develop and demonstrate the Superconducting Traveling Wave Accelerator (STWA), a new experimental device that ...

In order to provide high gradient acceleration demonstration experiments, a broadband coupling section will be needed for the high-gradient dielectric-loaded accelerator (DLA). This project will develop a coaxial-type coupler that can provide the required mode conversion and the impedance matching transition simultaneously, without using a tapered dielectric. The coupler design will avoid vacuu ...

The positron supply for the International Linear Collider (ILC) will be generated by shining a 285 kW beam of 10.7 MeV photons onto a metallic target. The photons themselves are to be generated from a series of 100 2-meter-long, short-period, double-helical undulator units. This project will design and construct this short-period helical undulator for the ILC. Magnesium diboride (MgB2) will be ...

The DOE is seeking superconductor technologies in support of magnets for use in accelerators, storage rings, and charged-particle beam-transport systems. Magnesium diboride (MgB2), an emerging superconductor material, offers the possibility of fabrication into multifilamentary strand from inexpensive starting materials using conventional metalworking processes. This project will develop improved ...

The efficiency of conventional pulverized coal power plant cycles is strongly related to operating temperature and pressure. Ultrasupercritical (USC) coal-fired boilers are being developed to operate with higher steam temperatures and steam pressures. However, the increasing temperatures and corrosive environment cause more severe oxidation and corrosion in USC boiler components. New surface mo ...