Award Data

The Advanced Photon Source (APS) at Argonne National Laboratory (ANL) is a third-generation, high-brightness, 7 GeV storage-ring-based x-ray light sources that has been in operation since 1996. Several possible long-term upgrades to the APS are investigated at Argonne, including an ERL-based upgrade and an Ultimate Storage Ring (USR), both of which could provide more than two orders of magnitude i ...

It is often found that seemingly distinct computational codes in

Electron-ion colliders (EICs) are the best microscopes for studying the structure of nuclear matter, particularly the nature and origin of spin in nuclei. To be effective, such machines require electron and ion beams with polarizations as high as 80%. Comprehensive end-to-end simulations to study the spin dynamics and optimize the beam polarization require exorbitant computational effort. We will ...

Although means currently exist to capture CO2 from combustion and other sources, capture at atmospheric levels is difficult. Once captured, CO2needs to be released in concentrated form and sequestered: e.g., it can be buried under ocean water or in underground vaults, or it can be reacted with basic metal oxides to form metal carbonates. CO2 may also be reduced, via the Sabatier reaction, to metha ...

THE HARD AND SOFT X-RAY SIGNAL RESPONSES TO A SAWTOOTH CRASHARE BEING USED TO MEASURE THE ENERGETIC ELECTRON DIFFUSION COEFFICIENT, D, AND THE THERMAL ELECTRON HEAT CONDUCTIVITY, E, SIMULTANEOUSLY UNDER IDENTICAL PLASMA CONDITIONS. PHASE I EMPLOYS A REPRESENTATIVE SET OF SOFT AND HARD X-RAY SAWTOOTH OSCILLATIONS FROM THE TEXAS EXPERIMENTAL TOKAMAK (TEXT) TO DEVELOP THE MATHEMATICAL MODELING NECESS ...

The DOE is interested in the development of efficient tidal turbine systems to help meet the future energy needs of the United States. State-of-the-art tidal turbine systems feature composite tidal turbine blades. Unfortunately, composite materials possess questionable durability characteristics relevant to the marine environment (e.g., poor cavitation-erosion and impact-damage-resistance), whic ...

A need exists for advanced instrumentation neutron-flux mapping with in the reactor-core for the Transient REActor Test (TREAT) facility and Advanced Test Reactor (ATR) experiments supporting advanced nuclear material testing. In addition, many U.S. research reactors and industrial power nuclear-reactors would benefit from in-core neutron-flux monitoring. Here it is proposed to research advanced M ...

Future generations of X-ray free-electron lasers will use novel seeding and tapering schemes to extract power from the electron beams with orders of magnitude greater efficiency. The current state-of-the-art free-electron laser codes are not adequately equipped for designing these machines. By developing a new code with these schemes in mind, a new generation of machines can be studied with high ...

Although fluorescent and incandescent lighting consumes >50% of the lighting energy budget, they are relatively inefficient, losing ~37% and 85%, respectively, of their energy to the IR. Thus, phosphors that could efficiently up-convert IR radiation to visible light would have a significant impact on lamp efficiency and design. This project will develop technology to increase the efficiency of u ...

Particle-in-cell (PIC) simulation has now become a commonplace tool for simulating plasma ki- netics, but there are constraints on its effectiveness – timesteps must be small to avoid numerical instabilities, and the number of particles required to reduce statistical noise to acceptable levels may be computationally prohibitive. In plasmas with many multistate ion species, even determin- ing dom ...