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Fox Ridge Energy and Education Institute Project Development Final Report
Project final report and summary.
Date:
February 25, 2012
Creator:
Osborn, Dale
Object Type:
Report
System:
The UNT Digital Library
DECONTAMINATION OF PLUTONIUM FOR FLUORIDE AND CHLORIDE DURING OXALATE PRECIPITATION, FILTRATION AND CALCINATION PROCESSES
Due to analytical limitations for the determination of fluoride (F) and chloride (Cl) in a previous anion exchange study, an additional study of the decontamination of Pu from F and Cl by oxalate precipitation, filtration and calcination was performed. Anion product solution from the previous impurity study was precipitated as an oxalate, filtered, and calcined to produce an oxide for analysis by pyrohydrolysis for total Cl and F. Analysis of samples from this experiment achieved the purity specification for Cl and F for the proposed AFS-2 process. Decontamination factors (DF's) for the overall process (including anion exchange) achieved a DF of {approx}5000 for F and a DF of {approx}100 for Cl. Similar experiments where both HF and HCl were spiked into the anion product solution to a {approx}5000 {micro}g /g Pu concentration showed a DF of 5 for F and a DF of 35 for Cl across the combined precipitation-filtration-calcination process steps.
Date:
July 25, 2012
Creator:
Kyser, E.
Object Type:
Report
System:
The UNT Digital Library
Electric Adsorption Heat Pump for Electric Vehicles
Advanced Research Projects Agency-Energy project sheet summarizing general information about the High Energy Advanced Thermal Storage (HEATS) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses the development of an advanced nanomaterial for electrical vehicle heating and cooling systems as part of the "Electric-Powered Adsorption Heat Pump for Electric Vehicles" project.
Date:
May 25, 2012
Creator:
Pacific Northwest National Library
Object Type:
Text
System:
The UNT Digital Library
Metal Organic Framework Research
Advanced Research Projects Agency-Energy project sheet summarizing general information about the Innovative Materials and Processes for Advanced Carbon Capture Technologies (IMPACCT) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses frameworks for carbon capture as part of the "High Throughput Discovery of Robust Metal Organic Framework for CO2 Capture" project.
Date:
May 25, 2012
Creator:
Lawrence Berkeley National Laboratory
Object Type:
Text
System:
The UNT Digital Library
CO2 Capture with Liquid-to-Solid Absorbents
Advanced Research Projects Agency-Energy project sheet summarizing general information about the Innovative Materials and Processes for Advanced Carbon Capture Technologies (IMPACCT) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses the development of liquid absorbents as part of the "CO2 Capture Process Using Phase-Changing Absorbents" project.
Date:
May 25, 2012
Creator:
General Electric Global Research
Object Type:
Text
System:
The UNT Digital Library
Collective Effects in the SuperB Collider
Some collective effects have been studied for the SuperB high luminosity collider. Estimates of the effect of Intra Beam Scattering (IBS) on the emittance and energy spread growths have been carried up for both the High Energy (HER, positrons) and the Low Energy (LER, electrons) rings. Electron cloud build up simulations for HER were performed with the ECLOUD code, developed at CERN, to predict the cloud formation in the arcs, taking into account possible remediation techniques such as clearing electrodes. The new code CMAD, developed at SLAC, has been used to study the effect of this electron cloud on the beam and assess the thresholds above which the electron cloud instability would set in.
Date:
June 25, 2012
Creator:
Demma, Theo; /INFN, Rome & Pivi, Mauro
Object Type:
Article
System:
The UNT Digital Library
Improved Superconducting Wire for Wind Generators
Advanced Research Projects Agency-Energy project sheet summarizing general information about the Rare Earth Alternatives in Critical Technologies (REACT) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses a new superconducting wire as part of the "Superconducting Wires for Direct-Drive Wind Generators" project.
Date:
May 25, 2012
Creator:
Brookhaven National Laboratory
Object Type:
Text
System:
The UNT Digital Library
Supersonic Technology for CO2 Capture
Advanced Research Projects Agency-Energy project sheet summarizing general information about the Innovative Materials and Processes for Advanced Carbon Capture Technologies (IMPACCT) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses the development of a new device as part of the "A High Efficiency Inertial CO2 Extraction System" project.
Date:
May 25, 2012
Creator:
Alliant Techsystems
Object Type:
Text
System:
The UNT Digital Library
Simulations of Ion Migration in the LCLS RF Gun and Injector
The motivation for this work was the observed surface contamination of the first LCLS RF gun copper cathode. We will present the results of simulations in regards to ion migration in the LCLS gun. Ions of residual gases will be created by interaction of molecular gas species with the UV drive laser beam and by the electron beam itself. The larger part of those ionized molecules remain in the vicinity of creation, are transported towards beam line walls or away from the cathode. However a small fraction gains enough kinetic energy, focused by RF and magnetic fields and propagates to the cathode, producing an undesirable increase of the cathode's surface work function. Although this fraction is small, during long term operation, this effect may become a significant factor limiting the source performance.
Date:
June 25, 2012
Creator:
Brachmann, Axel & Dowell, David
Object Type:
Article
System:
The UNT Digital Library
Stimuli-Responsive Metal Organic Frameworks
Advanced Research Projects Agency-Energy project sheet summarizing general information about the Innovative Materials and Processes for Advanced Carbon Capture Technologies (IMPACCT) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses the development of new binding materials as part of the "Stimuli-Responsive Metal Organic Frameworks for Energy-Efficient Post Combustion Capture" project.
Date:
May 25, 2012
Creator:
Texas A & M University
Object Type:
Text
System:
The UNT Digital Library
2012 MICROBIAL STRESS RESPONSE GORDON RESEARCH CONFERENCE, JULY 20-25, 2012
The Gordon Research Conference on MICROBIAL STRESS RESPONSE was held at Mount Holyoke College, South Hadley, Massachusetts, July 15-20, 2012. The Conference was well-attended with 180 participants. The 2012 Microbial Stress Responses Gordon Research Conference will provide a forum for the open reporting of recent discoveries on the diverse mechanisms employed by microbes to respond to stress. Approaches range from analysis at the molecular level (how are signals perceived and transmitted to change gene expression or function) to cellular and microbial community responses. Gordon Research Conferences does not permit publication of meeting proceedings.
Date:
July 25, 2012
Creator:
Donohue, Timothy
Object Type:
Article
System:
The UNT Digital Library
Iron-Nickel-Based SuperMagnets
Advanced Research Projects Agency-Energy project sheet summarizing general information about the Rare Earth Alternatives in Critical Technologies (REACT) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses bulk development of iron-nickel crystal structure magnets as part of the "Multiscale Development of L10 Materials for Rare Earth-Free Permanent Magnets" project.
Date:
May 25, 2012
Creator:
Northeastern University
Object Type:
Text
System:
The UNT Digital Library
Contemporary Fraction of bis(2-ethylhexyl) Phthalate in Stilton Cheese by Accelerator Mass Spectrometry
None
Date:
September 25, 2012
Creator:
Nelson, M. A.; Ondov, J. A.; VanDerveer, M. C. & Buchholz, B. A.
Object Type:
Article
System:
The UNT Digital Library
Exploration of the Equilibrium Operating Space For NSTX-Upgrade
This paper explores a range of high-performance equilibrium scenarios available in the NSTX-Upgrade device [J.E. Menard, submitted for publication to Nuclear Fusion]. NSTX-Upgrade is a substantial upgrade to the existing NSTX device [M. Ono, et al., Nuclear Fusion 40, 557 (2000)], with significantly higher toroidal field and solenoid capabilities, and three additional neutral beam sources with significantly larger current drive efficiency. Equilibria are computed with freeboundary TRANSP, allowing a self consistent calculation of the non-inductive current drive sources, the plasma equilibrium, and poloidal field coil current, using the realistic device geometry. The thermal profiles are taken from a variety of existing NSTX discharges, and different assumptions for the thermal confinement scalings are utilized. The no-wall and idealwall n=1 stability limits are computed with the DCON code. The central and minimum safety factors are quite sensitive to many parameters: they generally increases with large outer plasmawall gaps and higher density, but can have either trend with the confinement enhancement factor. In scenarios with strong central beam current drive, the inclusion of non-classical fast ion diffusion raises qmin, decreases the pressure peaking, and generally improves the global stability, at the expense of a reduction in the non-inductive current drive fraction; cases with …
Date:
April 25, 2012
Creator:
Gerhardt, S. P.; Andre, R. & Menard, J. E.
Object Type:
Report
System:
The UNT Digital Library
Advanced Nuclear Fuel Cycle Effects on the Treatment of Uncertainty in the Long-Term Assessment of Geologic Disposal Systems - Ebs Input
The Used Fuel Disposition (UFD) Campaign within the Department of Energy's Office of Nuclear Energy (DOE-NE) Fuel Cycle Technology (FCT) program has been tasked with investigating the disposal of the nation's spent nuclear fuel (SNF) and high-level nuclear waste (HLW) for a range of potential waste forms and geologic environments. The planning, construction, and operation of a nuclear disposal facility is a long-term process that involves engineered barriers that are tailored to both the geologic environment and the waste forms being emplaced. The UFD Campaign is considering a range of fuel cycles that in turn produce a range of waste forms. The UFD Campaign is also considering a range of geologic media. These ranges could be thought of as adding uncertainty to what the disposal facility design will ultimately be; however, it may be preferable to thinking about the ranges as adding flexibility to design of a disposal facility. For example, as the overall DOE-NE program and industrial actions result in the fuel cycles that will produce waste to be disposed, and the characteristics of those wastes become clear, the disposal program retains flexibility in both the choice of geologic environment and the specific repository design. Of course, other factors …
Date:
April 25, 2012
Creator:
Sutton, M.; Blink, J. A.; Greenberg, H. R. & Sharma, M.
Object Type:
Report
System:
The UNT Digital Library
Conversion Tower for Dispatchable Solar Power
Advanced Research Projects Agency-Energy project sheet summarizing general information about the High Energy Advanced Thermal Storage (HEATS) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses new system architecture for a solar-electric conversion tower as part of the "High-Efficiency Solar-Electric Conversion Power Tower" project.
Date:
May 25, 2012
Creator:
Abengoa Solar, Inc.
Object Type:
Text
System:
The UNT Digital Library
Gyrokinetic Studies of the Effect of Beta on Drift-wave Stability in NCSX
The gyrokinetic turbulence code GS2 was used to investigate the effects of plasma β on linear, collisionless ion temperature gradient (ITG) modes and trapped electron modes (TEM) in National Compact Stellarator Experiment (NCSX) geometry. Plasma β affects stability in two ways: through the equilibrium and through magnetic fluctuations. The first was studied here by comparing ITG and TEM stability in two NCSX equilibria of differing β values, revealing that the high β equilibrium was marginally more stable than the low β equilibrium in the adiabatic-electron ITG mode case. However, the high β case had a lower kinetic-electron ITG mode critical gradient. Electrostatic and electromagnetic ITG and TEM mode growth rate dependencies on temperature gradient and density gradient were qualitatively similar. The second β effect is demonstrated via electromagnetic ITG growth rates' dependency on GS2's β input parameter. A linear benchmark with gyrokinetic codes GENE and GKV-X is also presented.
Date:
September 25, 2012
Creator:
J.A. Baumgaertel, G.W. Hammett, D.R. Mikkelsen, M. Nunami, and P. Xanthopoulos
Object Type:
Report
System:
The UNT Digital Library
CO2 Capture and Regeneration at Low Temperatures
Advanced Research Projects Agency-Energy project sheet summarizing general information about the Innovative Materials and Processes for Advanced Carbon Capture Technologies (IMPACCT) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses the development of non-water-based carbon dioxide solvents as part of the"Novel Non-Aqueous CO2 Solvents and Capture Process with Substantially Reduced Energy Penalties" project.
Date:
May 25, 2012
Creator:
Research Triangle Institute
Object Type:
Text
System:
The UNT Digital Library
Rock Valley Direct Earthquake-Explosion Comparison Experiment (RV-DC): Initial Feasibility Study
None
Date:
September 25, 2012
Creator:
Walter, W. R.; Pyle, M. L.; Ford, S. R.; Myers, S. C.; Smith, K. D.; Snelson, C. et al.
Object Type:
Report
System:
The UNT Digital Library
Hydrogen Concentration in the Inner-Most Container within a Pencil Tank Overpack Packaged in a Standard Waste Box Package
A set of steady state diffusion flow equations, for the hydrogen diffusion from one bag to the next bag (or one plastic waste container to another), within a set of nested waste bags (or nested waste containers), are developed and presented. The input data is then presented and justified. Inputting the data for each volume and solving these equations yields the steady state hydrogen concentration in each volume. The input data (permeability of the bag surface and closure, dimensions and hydrogen generation rate) and equations are analyzed to obtain the hydrogen concentrations in the innermost container for a set of containers which are analyzed for the TRUCON code for the general waste containers and the TRUCON code for the Pencil Tank Overpacks (PTO) in a Standard Waste Box (SWB).
Date:
January 25, 2012
Creator:
Marusich, Robert M.
Object Type:
Report
System:
The UNT Digital Library
Alternatives to Critical Materials in Magnets
Advanced Research Projects Agency-Energy project sheet summarizing general information about the 14 projects that are a part of the Rare Earth Alternatives in Critical Technologies (REACT) program including project goals, innovation needs, and potential impacts.
Date:
May 25, 2012
Creator:
United States. Advanced Research Projects Agency-Energy.
Object Type:
Text
System:
The UNT Digital Library
Hybrid Solvent-Membrane CO2 Capture
Advanced Research Projects Agency-Energy project sheet summarizing general information about the Innovative Materials and Processes for Advanced Carbon Capture Technologies (IMPACCT) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses the development of a new carbon scrubbing approach as part of the "A Solvent/Membrane Hybrid Post-combustion CO2 Capture Process for Existing Coal-Fired Power Plants" project.
Date:
May 25, 2012
Creator:
University of Kentucky Center for Applied Research
Object Type:
Text
System:
The UNT Digital Library
Design and Modeling of an Asynchronous Checkpointing System
None
Date:
June 25, 2012
Creator:
Sato, K; Moody, A; Mohror, K; Gamblin, T; de Supinski, B; Maruyama, N et al.
Object Type:
Article
System:
The UNT Digital Library
Overview of Mono-Energetic Gamma-Ray Sources and Applications
Recent progress in accelerator physics and laser technology have enabled the development of a new class of tunable gamma-ray light sources based on Compton scattering between a high-brightness, relativistic electron beam and a high intensity laser pulse produced via chirped-pulse amplification (CPA). A precision, tunable Mono-Energetic Gamma-ray (MEGa-ray) source driven by a compact, high-gradient X-band linac is currently under development and construction at LLNL. High-brightness, relativistic electron bunches produced by an X-band linac designed in collaboration with SLAC NAL will interact with a Joule-class, 10 ps, diode-pumped CPA laser pulse to generate tunable {gamma}-rays in the 0.5-2.5 MeV photon energy range via Compton scattering. This MEGaray source will be used to excite nuclear resonance fluorescence in various isotopes. Applications include homeland security, stockpile science and surveillance, nuclear fuel assay, and waste imaging and assay. The source design, key parameters, and current status are presented, along with important applications, including nuclear resonance fluorescence.
Date:
June 25, 2012
Creator:
Hartemann, Fred; /LLNL, Livermore; Albert, Felicie; /LLNL, Livermore; Anderson, Scott; /LLNL, Livermore et al.
Object Type:
Article
System:
The UNT Digital Library