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EVALUATING ENVIRONMENTAL DECISION SUPPORT TOOLS.

Description: Effective contaminated land management requires a number of decisions addressing a suite of technical, economic, and social concerns. These concerns include human health risks, ecological risks, economic costs, technical feasibility of proposed remedial actions, and the value society places on clean-up and re-use of formerly contaminated lands. Decision making, in the face of uncertainty and multiple and often conflicting objectives, is a vital and challenging role in environmental management t… more
Date: October 1, 2004
Creator: SULLIVAN, T.
Partner: UNT Libraries Government Documents Department
open access

DOE Hydrogen Program 2004 Annual Merit Review and Peer Evaluation Report

Description: This document summarizes the project evaluations and comments from the DOE Hydrogen Program 2004 Annual Program Review. Hydrogen production, delivery and storage; fuel cells; technology validation; safety, codes and standards; and education R&D projects funded by DOE in FY2004 are reviewed.
Date: October 1, 2004
Partner: UNT Libraries Government Documents Department
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Analyses in Support of Z-IFE: LLNL Progress Report for FY-04

Description: During the last quarter of FY2004, Lawrence Livermore National Laboratory (LLNL) conducted a brief study of power plant options for a z-pinch-based inertial fusion energy (Z-IFE) power plant. Areas that were covered include chamber design, thick-liquid response, neutronics and activation, and systems studies. This report summarizes the progress made in each of these areas, provides recommendations for improvements to the basic design concept, and identifies future work that is needed. As a star… more
Date: October 6, 2004
Creator: Meier, W; Abbott, R; Latkowski, J; Moir, R; Reyes, S & Schmitt, R
Partner: UNT Libraries Government Documents Department
open access

Determination of collision rates relevant to Weibel-like instability growth rates in classical and non-classical plasmas encountered in fast-ignition experiments

Description: Analytical simulations of fast-electron currents induced by high-density laser-plasma interactions require estimation of various plasma and beam parameters, including temperatures, densities, and collision rates. This note describes a technique used to estimate or calculate these parameters for the case of contemporary multi-terawatt experiments using foil targets as well as for anticipated fast-ignition-scale experiments.
Date: October 18, 2004
Creator: Hill, J M & Key, M H
Partner: UNT Libraries Government Documents Department
open access

Evaluation of the Geothermal Public Power Utility Workshops in California

Description: The federal government devotes significant resources to educating consumers and businesses about geothermal energy. Yet little evidence exists for defining the kinds of information needed by the various audiences with specialized needs. This paper presents the results of an evaluation of the Geothermal Municipal Utility Workshops that presented information on geothermal energy to utility resource planners at customer-owned utilities in California. The workshops were sponsored by the Western Are… more
Date: October 1, 2004
Creator: Farhar, B. C.
Partner: UNT Libraries Government Documents Department
open access

Weighted Essentially Non-Oscillatory Simulations and Modeling of Complex Hydrodynamic Flows. Part 2. Single-Mode Richtmyer-Meshkov Instability with Reshock

Description: The Richtmyer-Meshkov instability is a fundamental fluid instability that occurs when perturbations on an interface separating gases with different properties grow following the passage of a shock. This instability is typically studied in shock tube experiments, and constitutes a fundamental example of a complex hydrodynamic flow. Numerical simulations and models for the instability growth and evolution have also been used to further understand the physics of the Richtmyer-Meshkov instability. … more
Date: October 6, 2004
Creator: Schilling, O & Latini, M
Partner: UNT Libraries Government Documents Department
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Results from Boiling Temperature Measurements for Saturated Solutions in the Systems NaCl + KNO{sub 3} + H{sub 2}O, NaNO{sub 3} + KNO{sub 3} + H{sub 2}O, and NaCl + NaNO{sub 3} + KNO{sub 3} + H{sub 2}O

Description: Boiling temperature measurements have been made for saturated ternary solutions of NaCl + KNO{sub 3} + H{sub 2}O and NaNO{sub 3} + KNO{sub 3} + H{sub 2}O over the full solute mole fraction range, along with the limiting binary solutions NaCl + H{sub 2}O, NaNO{sub 3} + H{sub 2}O, and KNO{sub 3} + H{sub 2}O. Boiling temperatures have also been measured for the quaternary NaCl + NaNO{sub 3} + KNO{sub 3} + H{sub 2}O mixtures with KNO{sub 3}:NaNO{sub 3} mole ratios of 1.01 and 1.19, which correspond… more
Date: October 4, 2004
Creator: Rard, J A
Partner: UNT Libraries Government Documents Department
open access

Dangerous Waste Characteristics of Contact-Handled Transuranic Mixed Wastes from Hanford Tanks

Description: This report summarizes existing analytical data gleaned from samples taken from the Hanford tanks designated as potentially containing transuranic mixed process wastes. Process knowledge of the wastes transferred to these tanks has been reviewed to determine whether the dangerous waste characteristics now assigned to all Hanford underground storage tanks are applicable to these particular wastes. Supplemental technologies are being examined to accelerate the Hanford tank waste cleanup mission a… more
Date: October 5, 2004
Creator: Tingey, Joel M.; Bryan, Garry H. & Deschane, Jaquetta R.
Partner: UNT Libraries Government Documents Department
open access

Methods for Calibrating Basin-Wide Hydroacoustic Propagation in the Indian Ocean

Description: This collaborative project was designed to test and compare methods for achieving full ocean basin propagation of hydroacoustic signals in the 5-100 Hz frequency band. Plans for a systematic calibration of the International Monitoring System (IMS) for nuclear testing were under consideration in 2000/2001. The results from this project provide information to guide such planning for future ocean basin calibration work. Several acoustic source types were tested during two sea-going experiments and… more
Date: October 11, 2004
Creator: Blackman, D; de Groot-Hedlin, C; Orcutt, J A; Harben, P H; Clarke, D B & Ramirez, A L
Partner: UNT Libraries Government Documents Department
open access

FY 2004 Infrared Photonics Final Report

Description: Research done by the Infrared Photonics team at PNNL is focused on developing miniaturized integrated optics for the MWIR and LWIR by exploiting the unique optical and material properties of chalcogenide glass. PNNL has developed thin film deposition capabilities, direct-laser writing techniques, IR photonic device demonstration, holographic optical element design and fabrication, photonic device modeling, and advanced optical metrology - all specific to chalcogenide glass. Chalcogenide infrare… more
Date: October 1, 2004
Creator: Anheier, Norman C.; Allen, Paul J.; Keller, Paul E.; Bennett, Wendy D.; Martin, Peter M.; Johnson, Bradley R. et al.
Partner: UNT Libraries Government Documents Department
open access

Foundations for Improvements to Passive Detection Systems - Final Report

Description: This project explores the scientific foundation and approach for improving passive detection systems for plutonium and highly enriched uranium in real applications. Sources of gamma-ray radiation of interest were chosen to represent a range of national security threats, naturally occurring radioactive materials, industrial and medical radiation sources, and natural background radiation. The gamma-ray flux emerging from these sources, which include unclassified criticality experiment configurati… more
Date: October 7, 2004
Creator: Labov, S E; Pleasance, L; Sokkappa, P; Craig, W; Chapline, G; Frank, M et al.
Partner: UNT Libraries Government Documents Department
open access

Possible Laminographic and Tomosynthesis Applications for Wolter Microscope Scan Geometries

Description: The Wolter microscope includes a number of attractive features for x-ray imaging, and possible connections to laminographic and tomosynthesis 3D object recovery algorithms. This type of instrument employs x-ray optics to sift out single energy x-rays from a broader spectral energy source, and direct those x-rays to a ''focus plane'' similar to the operation of a optical microscope (see Figure 1 for schematic of a Wolter instrument). Unlike optical microscopes the 3D object can be thick in the d… more
Date: October 5, 2004
Creator: Schneberk, D; Jackson, J & Martz, H
Partner: UNT Libraries Government Documents Department
open access

Transverse instability at the recycler ring

Description: Sporadic transverse instabilities have been observed at the Fermilab Recycler Ring leading to increase in transverse emittances and beam loss. The driving source of these instabilities has been attributed to the resistive-wall impedance with space-charge playing an important role in suppressing Landau damping. Growth rates of the instabilities are computed. Remaining problems are discussed.
Date: October 1, 2004
Creator: Ng, K. Y.
Partner: UNT Libraries Government Documents Department
open access

Comparison of Electron Cloud Simulation and Experiments in the High-Current Experiment

Description: A set of experiments has been performed on the High-Current Experiment (HCX) facility at LBNL, in which the ion beam is allowed to collide with an end plate and thereby induce a copious supply of desorbed electrons. Through the use of combinations of biased and grounded electrodes positioned in between and downstream of the quadrupole magnets, the flow of electrons upstream into the magnets can be turned on or off. Properties of the resultant ion beam are measured under each condition. The expe… more
Date: October 7, 2004
Creator: Cohen, R; Friedman, A; Covo, M K; Lund, S; Molvik, A; Bieniosek, F et al.
Partner: UNT Libraries Government Documents Department
open access

Canyon Disposal Initiative - Numerical Modeling of Contaminant Transport from Grouted Residual Waste in the 221-U Facility (U Plant)

Description: This letter report documents initial numerical analyses conducted by PNNL to provide support for a feasibility study on decommissioning of the canyon buildings at Hanford. The 221-U facility is the first of the major canyon buildings to be decommissioned. The specific objective of this modeling effort was to provide estimates of potential rates of migration of residual contaminants out of the 221-U facility during the first 40 years after decommissioning. If minimal contaminant migration is pre… more
Date: October 12, 2004
Creator: Rockhold, Mark L.; White, Mark D. & Freeman, Eugene J.
Partner: UNT Libraries Government Documents Department
open access

Simulations of Turbulence Induced Ellipticity Over Large Fields-of-View: The First Step Towards Enabling LSST Weak Lensing Science

Description: Atmospheric turbulence can mimic the effects of weak lensing in astronomical images, so it is necessary to understand to what degree turbulence affects weak lensing measurements. In particular, we studied the ellipticity induced upon the point-spread functions (PSFs) of a grid of simulated stars separated by distances (d {approx} 1{prime}) that will be characteristic of Large Synoptic Survey Telescope (LSST) images. We observe that atmospherically induced ellipticity changes on small scales (d … more
Date: October 11, 2004
Creator: Schlaufman, K
Partner: UNT Libraries Government Documents Department
open access

Derivation Of Probabilistic Damage Definitions From High Fidelity Deterministic Computations

Description: This paper summarizes a methodology used by the Underground Analysis and Planning System (UGAPS) at Lawrence Livermore National Laboratory (LLNL) for the derivation of probabilistic damage curves for US Strategic Command (USSTRATCOM). UGAPS uses high fidelity finite element and discrete element codes on the massively parallel supercomputers to predict damage to underground structures from military interdiction scenarios. These deterministic calculations can be riddled with uncertainty, especial… more
Date: October 26, 2004
Creator: Leininger, L D
Partner: UNT Libraries Government Documents Department
open access

Study of Fish Response Using Particle Image Velocimetry and High-Speed, High-Resolution Imaging

Description: Existing literature of previous particle image velocimetry (PIV) studies of fish swimming has been reviewed. Historically, most of the studies focused on the performance evaluation of freely swimming fish. Technological advances over the last decade, especially the development of digital particle image velocimetry (DPIV) technique, make possible more accurate, quantitative descriptions of the flow patterns adjacent to the fish and in the wake behind the fins and tail, which are imperative to de… more
Date: October 23, 2004
Creator: Deng, Zhiqun; Richmond, Marshall C.; Guensch, Gregory R. & Mueller, Robert P.
Partner: UNT Libraries Government Documents Department
open access

LER Data Mining Pilot Study Final Report

Description: LERs consist of a one page standard form with a standard header and free text data, followed by additional continuation pages of free text data. Currently this LER data is analyzed by first inputting the heading and text data manually into a categorical relational database. The data is then evaluated by enumeration of data in various categories and supplemented by review of individual LERs. This is labor intensive and makes it difficult to relate specific descriptive text to enumerated results.… more
Date: October 15, 2004
Creator: Young, Jonathan; Zentner, Michael D. & McQuerry, Dennis L.
Partner: UNT Libraries Government Documents Department
open access

Northern Power Systems WindPACT Drive Train Alternative Design Study Report; Period of Performance: April 12, 2001 to January 31, 2005

Description: The National Renewable Energy Laboratory (NREL) Wind Partnerships for Advanced Component Technologies (WindPACT) project seeks to advance wind turbine technology by exploring innovative concepts in drivetrain design. A team led by Northern Power Systems (Northern) of Waitsfield, Vermont, was chosen to perform this work. Conducted under subcontract YCX-1-30209-02, project objectives are to identify, design, and test a megawatt (MW)-scale drivetrain with the lowest overall life cycle cost. The pr… more
Date: October 1, 2004
Creator: Bywaters, G.; John, V.; Lynch, J.; Mattila, P.; Norton, G.; Stowell, J. et al.
Partner: UNT Libraries Government Documents Department
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Wind Tunnel Aerodynamic Tests of Six Airfoils for Use on Small Wind Turbines; Period of Performance: October 31, 2002--January 31, 2003

Description: Wind Tunnel Aerodynamic Tests of Six Airfoils for Use on Small Wind Turbinesrepresents the fourth installment in a series of volumes documenting the ongoing work of th University of Illinois at Urbana-Champaign Low-Speed Airfoil Tests Program. This particular volume deals with airfoils that are candidates for use on small wind turbines, which operate at low Reynolds numbers.
Date: October 1, 2004
Creator: Selig, M. S. & McGranahan, B. D.
Partner: UNT Libraries Government Documents Department
open access

Interim Status Groundwater Monitoring Plan for Low-Level Waste Management Areas 1 to 4, RCRA Facilities, Hanford,Washington

Description: This document describes the monitoring plan to meet the requirements for interim status groundwater monitoring at Hanford Site low-level waste burial grounds as specified by 40 CFR 265, incorporated by reference in WAC 173-303-400. The monitoring will take place at four separate low-level waste management areas in the 200-West and 200-East Areas, in the central part of the site. This plan replaces the previous monitoring plan.
Date: October 25, 2004
Creator: Dresel, P Evan
Partner: UNT Libraries Government Documents Department
open access

ETAII 6 MEV PEPPERPOT EMITTANCE MEASUREMENT

Description: We measured the beam emittance at the ETAII accelerator using a pepper-pot diagnostic at nominal parameters of 6 MeV and 2000 Amperes. During the coarse of these experiments, a ''new tune'' was introduced which significantly improved the beam quality. The source of a background pedestal was investigated and eliminated. The measured ''new tune'' emittance is {var_epsilon}= 8.05 {plus_minus} 0. 53 cm - mr or a normalized emittance of {var_epsilon}{sub n} = 943 {plus_minus} 63 mm - mr In 1990 the … more
Date: October 18, 2004
Creator: Paul, A C; Richardson, R & Weir, J
Partner: UNT Libraries Government Documents Department
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