Results from a Low-Energy Analysis of the CDMS II Germanium Data (open access)

Results from a Low-Energy Analysis of the CDMS II Germanium Data

None
Date: June 4, 2012
Creator: Ahmed, Z.; Akerib, D. S.; Arrenberg, S.; Bailey, C. N.; Balakishiyeva, D.; Baudis, L. et al.
Object Type: Article
System: The UNT Digital Library
Search for Inelastic Dark Matter with the CDMS II Experiment (open access)

Search for Inelastic Dark Matter with the CDMS II Experiment

None
Date: June 4, 2012
Creator: Ahmed, Z.; Akerib, D. S.; Arrenberg, S.; Bailey, C. N.; Balakishiyeva, D.; Baudis, L. et al.
Object Type: Article
System: The UNT Digital Library
A Low-threshold Analysis of CDMS Shallow-site Data (open access)

A Low-threshold Analysis of CDMS Shallow-site Data

Data taken during the final shallow-site run of the first tower of the Cryogenic Dark Matter Search (CDMS II) detectors have been reanalyzed with improved sensitivity to small energy depositions. Four {approx}224 g germanium and two {approx}105 g silicon detectors were operated at the Stanford Underground Facility (SUF) between December 2001 and June 2002, yielding 118 live days of raw exposure. Three of the germanium and both silicon detectors were analyzed with a new low-threshold technique, making it possible to lower the germanium and silicon analysis thresholds down to the actual trigger thresholds of {approx}1 and {approx}2 keV, respectively. Limits on the spin-independent cross section for weakly interacting massive particles (WIMPs) to elastically scatter from nuclei based on these data exclude interesting parameter space for WIMPs with masses below 9 GeV/c{sup 2}. Under standard halo assumptions, these data partially exclude parameter space favored by interpretations of the DAMA/LIBRA and CoGeNT experiments data as WIMP signals, and exclude new parameter space for WIMP masses between 3 and 4 GeV/c{sup 2}.
Date: June 4, 2012
Creator: Akerib, D. S.; Attisha, M. J.; Baudis, L.; Bauer, D. A.; Bolozdynya, A. I.; Brink, P. L. et al.
Object Type: Article
System: The UNT Digital Library
Integration of Renewables Via Demand Management (open access)

Integration of Renewables Via Demand Management

Advanced Research Projects Agency-Energy project sheet summarizing general information about the Green Electricity Network Integration (GENI) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses an automated control software to manage the electric grid as part of the "Highly Dispatchable and Distributed Demand Response for the Integration of Distributed Generation" project.
Date: June 4, 2012
Creator: AutoGrid Systems, Inc.
Object Type: Text
System: The UNT Digital Library
New Proton-Ionizable, Calixarene-Based Ligands for Selective Metal Ion Separations (open access)

New Proton-Ionizable, Calixarene-Based Ligands for Selective Metal Ion Separations

The project objective was the discovery of new ligands for performing metal ion separations. The research effort entailed the preparation of new metal ion complexing agents and polymers and their evaluation in metal ion separation processes of solvent extraction, synthetic liquid membrane transport, and sorption. Structural variations in acyclic, cyclic, and bicyclic organic ligands were used to probe their influence upon the efficiency and selectivity with which metal ion separations can be performed. A unifying feature of the ligand structures is the presence of one (or more) side arm with a pendent acidic function. When a metal ion is complexed within the central cavity of the ligand, ionization of the side arm(s) produces the requisite anion(s) for formation of an overall electroneutral complex. This markedly enhances extraction/transport efficiency for separations in which movement of aqueous phase anions of chloride, nitrate, or sulfate into an organic medium would be required. Through systematic structural variations, new ligands have been developed for efficient and selective separations of monovalent metal ions (e.g., alkali metal, silver, and thallium cations) and of divalent metal ion species (e.g., alkaline earth metal, lead, and mercury cations). Research results obtained in these fundamental investigations provide important insight for the …
Date: June 4, 2012
Creator: Bartsch, Richard A.
Object Type: Report
System: The UNT Digital Library
Ag on Si(111) from basic science to application (open access)

Ag on Si(111) from basic science to application

In our work we revisit Ag and Au adsorbates on Si(111)-7x7, as well as experiment with a ternary system of Pentacene, Ag and Si(111). Of particular interest to us is the Si(111)-({radical}3x{radical}3)R30{degree}–Ag (Ag-Si-{radical}3 hereafter). In this thesis I systematically e plore effects of Ag deposition on the Ag-Si-{radical}3 at different temperatures, film thicknesses and deposition fluxes. The generated insight of the Ag system on the Si(111) is then applied to generate novel methods of nanostructuring and nanowire growth. I then extend our expertise to the Au system on the Ag-Si(111) to gain insight into Au-Si eutectic silicide formation. Finally we explore behavior and growth modes of an organic molecule on the Ag-Si interface.
Date: April 4, 2012
Creator: Belianinov, Aleksey
Object Type: Thesis or Dissertation
System: The UNT Digital Library
DEVELOPMENT OF METHODOLOGY AND FIELD DEPLOYABLE SAMPLING TOOLS FOR SPENT NUCLEAR FUEL INTERROGATION IN LIQUID STORAGE (open access)

DEVELOPMENT OF METHODOLOGY AND FIELD DEPLOYABLE SAMPLING TOOLS FOR SPENT NUCLEAR FUEL INTERROGATION IN LIQUID STORAGE

This project developed methodology and field deployable tools (test kits) to analyze the chemical and microbiological condition of the fuel storage medium and determine the oxide thickness on the spent fuel basin materials. The overall objective of this project was to determine the amount of time fuel has spent in a storage basin to determine if the operation of the reactor and storage basin is consistent with safeguard declarations or expectations. This project developed and validated forensic tools that can be used to predict the age and condition of spent nuclear fuels stored in liquid basins based on key physical, chemical and microbiological basin characteristics. Key parameters were identified based on a literature review, the parameters were used to design test cells for corrosion analyses, tools were purchased to analyze the key parameters, and these were used to characterize an active spent fuel basin, the Savannah River Site (SRS) L-Area basin. The key parameters identified in the literature review included chloride concentration, conductivity, and total organic carbon level. Focus was also placed on aluminum based cladding because of their application to weapons production. The literature review was helpful in identifying important parameters, but relationships between these parameters and corrosion rates …
Date: June 4, 2012
Creator: Berry, T.; Milliken, C.; Martinez-Rodriguez, M.; Hathcock, D. & Heitkamp, M.
Object Type: Article
System: The UNT Digital Library
Computational Mechanics Research and Support for Aerodynamics and Hydraulics at Tfhrc, Year 2 Quarter 3 Progress Report (open access)

Computational Mechanics Research and Support for Aerodynamics and Hydraulics at Tfhrc, Year 2 Quarter 3 Progress Report

This report addresses the computational mechanics research and support for aerodynamics and hydraulics at Tfhrc.
Date: October 4, 2012
Creator: Bojanowski, C.; Balcerzak, M.; Kulak, R.; Ley, H. (Energy Systems) & Consultants), (RFK Engineering Mechanics
Object Type: Report
System: The UNT Digital Library
Microwave Radiometer – 3 Channel (MWR3C) Handbook (open access)

Microwave Radiometer – 3 Channel (MWR3C) Handbook

The microwave radiometer 3-channel (MWR3C) provides time-series measurements of brightness temperatures from three channels centered at 23.834, 30, and 89 GHz. These three channels are sensitive to the presence of liquid water and precipitable water vapor.
Date: May 4, 2012
Creator: Cadeddu, MP
Object Type: Report
System: The UNT Digital Library
Scalable Distributed Automation System (open access)

Scalable Distributed Automation System

Advanced Research Projects Agency-Energy project sheet summarizing general information about the Green Electricity Network Integration (GENI) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses a a distributed automation system for managing electricity from renewable resources as part of the "Scalable Real-time Decentralized Volt/VAR Control" project.
Date: June 4, 2012
Creator: California Institute of Technology
Object Type: Text
System: The UNT Digital Library
Magnetic Technology for Power Converters (open access)

Magnetic Technology for Power Converters

Advanced Research Projects Agency-Energy project sheet summarizing general information about the Solar Agile Delivery of Electrical Power Technology (ADEPT) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses a new nanoscale magnetic material as part of the "Nanocomposite Magnet Technology for High Frequency MW-Scale Power Converters" project.
Date: June 4, 2012
Creator: Carnegie Mellon University
Object Type: Text
System: The UNT Digital Library
Integrated Power Adapter (open access)

Integrated Power Adapter

Advanced Research Projects Agency-Energy project sheet summarizing general information about the Agile Delivery of Electrical Power Technology (ADEPT) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses more efficient power converters as part of the "Isolated Converter with Integrated Passives and Low Material Stress" project.
Date: June 4, 2012
Creator: Center for Power Electronics Systems
Object Type: Text
System: The UNT Digital Library
SciDAC-Center for Plasma Edge Simulation (open access)

SciDAC-Center for Plasma Edge Simulation

The SciDAC ProtoFSP Center for Plasma Edge Simulation (CPES) [http://www.cims.nyu.edu/cpes/] was awarded to New York University, Courant Institute of Mathematical Sciences in FY 2006. C.S. Chang was the institutional and national project PI. It’s mission was 1) to build kinetic simulation code applicable to tokamak edge region including magnetic divertor geometry, 2) to build a computer science framework which can integrate the kinetic code with MHD/fluid codes in multiscale, 3) to conduct scientific research using the developed tools. CPES has built two such edge kinetic codes XGC0 and XGC1, which are still the only working kinetic edge plasma codes capable of including the diverted magnetic field geometry. CPES has also built the code coupling framework EFFIS (End-to-end Framework for Fusion Integrated Simulation), which incubated and used the Adios (www.olcf.ornl.gov/center-projects/adios/) and eSiMon (http://www.olcf.ornl.gov/center-projects/esimmon/) technologies, together with the Kepler technology.
Date: June 4, 2012
Creator: Chang, Choong Seock
Object Type: Report
System: The UNT Digital Library
Decision-Support Software for Grid Operators (open access)

Decision-Support Software for Grid Operators

Advanced Research Projects Agency-Energy project sheet summarizing general information about the Green Electricity Network Integration (GENI) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses controls for managing power flows as part of the "Transmission Topology Control for Infrastructure Resilience to the Integration of Renewable Generation" project.
Date: June 4, 2012
Creator: Charles River Associates International, Inc.
Object Type: Text
System: The UNT Digital Library
Atomic data of tungsten for current and future uses in fusion and plasma science (open access)

Atomic data of tungsten for current and future uses in fusion and plasma science

None
Date: August 4, 2012
Creator: Clementson, J; Beiersdorfer, P & Lennartsson, T
Object Type: Article
System: The UNT Digital Library
A Mixing Model for the Richtmyer-Meshkov Instability (open access)

A Mixing Model for the Richtmyer-Meshkov Instability

None
Date: June 4, 2012
Creator: Cook, A W; Weber, C; Cabot, W H & Bonazza, R
Object Type: Article
System: The UNT Digital Library
Cloud Computing for the Grid (open access)

Cloud Computing for the Grid

Advanced Research Projects Agency-Energy project sheet summarizing general information about the Green Electricity Network Integration (GENI) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses cloud computing-based software for managing electric grids as part of the "GridControl: A Software Platform to Support the Smart Grid" project.
Date: June 4, 2012
Creator: Cornell University
Object Type: Text
System: The UNT Digital Library
Argonne National Laboratory Site Environmental Report for Calendar Year 2011 (open access)

Argonne National Laboratory Site Environmental Report for Calendar Year 2011

This Report is about the environmental protection program at Argonne National Laboratory site environmental report for the calendar year 2011. It also discusses about the status of Argonne Environmental protection activities with respect to compliance with the various laws and regulations, along with environmental management, sustainability efforts.
Date: October 4, 2012
Creator: Davis, T. M.; Moos, L. P. & Golchert, N. W.
Object Type: Report
System: The UNT Digital Library
A National Strategy for Advancing Climate Modeling (open access)

A National Strategy for Advancing Climate Modeling

Climate models are the foundation for understanding and projecting climate and climate-related changes and are thus critical tools for supporting climate-related decision making. This study developed a holistic strategy for improving the nation’s capability to accurately simulate climate and related Earth system changes on decadal to centennial timescales. The committee’s report is a high level analysis, providing a strategic framework to guide progress in the nation’s climate modeling enterprise over the next 10-20 years. This study was supported by DOE, NSF, NASA, NOAA, and the intelligence community.
Date: December 4, 2012
Creator: Dunlea, Edward & Elfring, Chris
Object Type: Report
System: The UNT Digital Library
Uptakes of CS and SR on San Joaquin Soil Measured Following Astm Method c1733. (open access)

Uptakes of CS and SR on San Joaquin Soil Measured Following Astm Method c1733.

Series of tests were conducted following ASTM Standard Procedure C1733 to evaluate the repeatability of the test and the effects of several test parameters, including the solution-to-soil mass ratio, test duration, pH, and the concentrations of contaminants in the solution. This standard procedure is recommended for measuring the distribution coefficient (K{sub d}) of a contaminant in a specific soil/groundwater system. One objective of the current tests was to identify experimental conditions that can be used in future interlaboratory studies to determine the reproducibility of the test method. This includes the recommendation of a standard soil, the range of contaminant concentrations and solution matrix, and various test parameters. Quantifying the uncertainty in the distribution coefficient that can be attributed to the test procedure itself allows the differences in measured values to be associated with differences in the natural systems being studied. Tests were conducted to measure the uptake of Cs and Sr dissolved as CsCl and Sr(NO{sub 3}){sub 2} in a dilute NaHCO{sub 3}/SiO{sub 2} solution (representing contaminants in a silicate groundwater) by a NIST standard reference material of San Joaquin soil (SRM 2709a). Tests were run to measure the repeatability of the method and the sensitivity of the test response …
Date: April 4, 2012
Creator: Ebert, W.L. & Petri, E.T. (Chemical Sciences and Engineering Division)
Object Type: Report
System: The UNT Digital Library
A New Control Room for SLAC Accelerators (open access)

A New Control Room for SLAC Accelerators

We are planning to construct a new control room at SLAC to unify and improve the operation of the LCLS, SPEAR3, and FACET accelerator facilities, and to provide the space and flexibility needed to support the LCLS-II and proposed new test beam facilities. The existing control rooms for the linac and SPEAR3 have been upgraded in various ways over the last decade, but their basic features have remained unchanged. We propose to build a larger modern Accelerator Control Room (ACR) in the new Research Support Building (RSB) which is currently under construction at SLAC. Shifting the center of control for the accelerator facilities entails both technical and administrative challenges. In this paper, we describe the history, concept, and status of this project.
Date: June 4, 2012
Creator: Erickson, Roger; Guerra, E.; Stanek, M.; Hoover, Z.Van & Warren, J.
Object Type: Article
System: The UNT Digital Library
Radiochromic Film Measurement of Spatial Uniformity for a Laser Generated X-ray Environment (open access)

Radiochromic Film Measurement of Spatial Uniformity for a Laser Generated X-ray Environment

None
Date: April 4, 2012
Creator: Fisher, J. H.; Newlander, C. D.; Horton, R.; Fournier, K. B.; Emig, J.; Patterson, R. et al.
Object Type: Article
System: The UNT Digital Library
Thermal Screening Of Residues From Acidification And Copper-Catalyzed Peroxide Oxidation Of Tank 48H Simulant (open access)

Thermal Screening Of Residues From Acidification And Copper-Catalyzed Peroxide Oxidation Of Tank 48H Simulant

This study evaluated the residues generated from copper-catalyzed peroxide oxidation (CCPO) of Tank 48H simulant. The first step of the CCPO calls for pH adjustment of the simulant, and early testing used either 15 wt% or 50 wt % nitric acid to reach a slurry pH of between 12 and 5. Residues obtained by ambient temperature pH adjustment with 50 wt % nitric acid followed by oxidation with 50 wt % hydrogen peroxide at 35, 50, and 65 �C (from a recently conducted Copper Catalyzed Peroxide Oxidation or CCPO) were also analyzed. Slurry samples at pH 7 or lower especially made from adding nitric acid at the process equivalent of one gallon per minute had the largest enthalpy of decomposition. The thermogravimetric characteristics of some samples from the CCPO test generated at pH 9 or lower exhibited rapid weight loss. Taken together, residues generated at pH 9 or lower may be classified as energetic upon decomposition in confined spaces or under adiabatic conditions. Therefore, additional testing is recommended with larger (up to 50 mL) samples in an adiabatic calorimeter. To minimize risk of formation of energetic byproducts, an intermediate slurry pH of 9 or greater is recommended following the acidification …
Date: October 4, 2012
Creator: Fondeur, F. F.; Newell, J. D.; Peters, T. B. & Fink, S. D.
Object Type: Report
System: The UNT Digital Library
The X-Ray Source Application (XRSA) Test Cassette for Radiation Exposures at the OMEGA Laser (open access)

The X-Ray Source Application (XRSA) Test Cassette for Radiation Exposures at the OMEGA Laser

None
Date: April 4, 2012
Creator: Fournier, K B; Rekow, V; Emig, J; Fisher, J H; Newlander, C D; Horton, R H et al.
Object Type: Article
System: The UNT Digital Library