Simulations of RF capture with barrier bucket in booster at injection (open access)

Simulations of RF capture with barrier bucket in booster at injection

As part of the effort to increase the number of ions per bunch in RHIC, a new scheme for RF capture of EBIS ions in Booster at injection has been developed. The scheme was proposed by M. Blaskiewicz and J.M. Brennan. It employs a barrier bucket to hold a half turn of beam in place during capture into two adjacent harmonic 4 buckets. After acceleration, this allows for 8 transfers of 2 bunches from Booster into 16 buckets on the AGS injection porch. During the Fall of 2011 the necessary hardware was developed and implemented by the RF and Controls groups. The scheme is presently being commissioned by K.L. Zeno with Au32+ ions from EBIS. In this note we carry out simulations of the RF capture. These are meant to serve as benchmarks for what can be achieved in practice. They also allow for an estimate of the longitudinal emittance of the bunches on the AGS injection porch.
Date: January 23, 2012
Creator: Gardner, C. J.
Object Type: Report
System: The UNT Digital Library
Presidential Nominating Process: Current Issues (open access)

Presidential Nominating Process: Current Issues

This report discusses issues regarding the Presidential Nomination Process including information about the 2008 election, calendar changes from 1988 to 2008, changes to national party rules for 2012, an evaluation of the primary system, reform proposals, and legislative considerations.
Date: January 27, 2012
Creator: Coleman, Kevin J.
Object Type: Report
System: The UNT Digital Library
Data Analysis for Real Time Identification of Grid Disruptions (open access)

Data Analysis for Real Time Identification of Grid Disruptions

The U.S. electric power system comprises multiple distinct interconnections of generators, high voltage transmission systems, and local distribution systems that maintain a continuous balance between generation and load with impressive levels of efficiency and reliability. This critical infrastructure has served the nation remarkably well, but is likely to see more changes over the next decade than it has seen over the past century. In particular, the widespread deployment of renewable generation, smart-grid controls, energy storage, and new conducting materials will require fundamental changes in grid planning and the way we run the power grid. Two challenges in the realization of the smart grid technology are the ability to visualize the deluge of expected data streams for global situational awareness; as well as the ability to detect disruptive and classify such events from spatially-distributed high-speed power system frequency measurements. One element of smart grid technology is the installation of a wide-area frequency measurement system on the electric poles in the streets for conditions monitoring of the distribution lines. This would provide frequency measurements about the status of the electric grid and possible information about impending problems before they start compounding and cascading. The ability to monitor the distribution lines is just …
Date: January 1, 2012
Creator: Chandola, Varun; Omitaomu, Olufemi A & Fernandez, Steven J
Object Type: Book
System: The UNT Digital Library
FULL SCALE TESTING TECHNOLOGY MATURATION OF A THIN FILM EVAPORATOR FOR HIGH-LEVEL LIQUID WASTE MANAGEMENT AT HANFORD - 12125 (open access)

FULL SCALE TESTING TECHNOLOGY MATURATION OF A THIN FILM EVAPORATOR FOR HIGH-LEVEL LIQUID WASTE MANAGEMENT AT HANFORD - 12125

Simulant testing of a full-scale thin-film evaporator system was conducted in 2011 for technology development at the Hanford tank farms. Test results met objectives of water removal rate, effluent quality, and operational evaluation. Dilute tank waste simulant, representing a typical double-shell tank supernatant liquid layer, was concentrated from a 1.1 specific gravity to approximately 1.5 using a 4.6 m{sup 2} (50 ft{sup 2}) heated transfer area Rototherm{reg_sign} evaporator from Artisan Industries. The condensed evaporator vapor stream was collected and sampled validating efficient separation of the water. An overall decontamination factor of 1.2E+06 was achieved demonstrating excellent retention of key radioactive species within the concentrated liquid stream. The evaporator system was supported by a modular steam supply, chiller, and control computer systems which would be typically implemented at the tank farms. Operation of these support systems demonstrated successful integration while identifying areas for efficiency improvement. Overall testing effort increased the maturation of this technology to support final deployment design and continued project implementation.
Date: January 26, 2012
Creator: AR, TEDESCHI; JE, CORBETT; RA, WILSON & J, LARKIN
Object Type: Article
System: The UNT Digital Library
Expanding the CareerAdvance Program in Tulsa, Oklahoma (open access)

Expanding the CareerAdvance Program in Tulsa, Oklahoma

Report discussing the CareerAdvance program, which is designed as a two-generation strategy to lift people out of poverty.
Date: January 2012
Creator: Glover, Robert W.; King, Christopher T. & Smith, Tara Carter
Object Type: Report
System: The Portal to Texas History
A retrospective of VAWT technology. (open access)

A retrospective of VAWT technology.

The study of Vertical-Axis Wind Turbine (VAWT) technology at Sandia National Laboratories started in the 1970's and concluded in the 1990's. These studies concentrated on the Darrieus configurations because of their high inherent efficiency, but other configurations (e.g., the Savonius turbine) were also examined. The Sandia VAWT program culminated with the design of the 34-m 'Test Bed' Darrieus VAWT. This turbine was designed and built to test various VAWT design concepts and to provide the necessary databases to validate analytical design codes and algorithms. Using the Test Bed as their starting point, FloWind Corp. developed a commercial VAWT product line with composite blades and an extended height-to-diameter ratio. The purpose of this paper is to discuss the design process and results of the Sandia 34-m VAWT Test Bed program and the FloWind prototype development program with an eye toward future offshore designs. This paper is our retrospective of the design, analysis, testing and commercial process. Special emphasis is given to those lessons learned that will aid in the development of an off-shore VAWT.
Date: January 1, 2012
Creator: Ashwill, Thomas D.; Sutherland, Herbert J. & Berg, Dale E.
Object Type: Report
System: The UNT Digital Library
Central and Eastern United States (CEUS) Seismic Source Characterization (SSC) for Nuclear Facilities Project (open access)

Central and Eastern United States (CEUS) Seismic Source Characterization (SSC) for Nuclear Facilities Project

This report describes a new seismic source characterization (SSC) model for the Central and Eastern United States (CEUS). It will replace the Seismic Hazard Methodology for the Central and Eastern United States, EPRI Report NP-4726 (July 1986) and the Seismic Hazard Characterization of 69 Nuclear Plant Sites East of the Rocky Mountains, Lawrence Livermore National Laboratory Model, (Bernreuter et al., 1989). The objective of the CEUS SSC Project is to develop a new seismic source model for the CEUS using a Senior Seismic Hazard Analysis Committee (SSHAC) Level 3 assessment process. The goal of the SSHAC process is to represent the center, body, and range of technically defensible interpretations of the available data, models, and methods. Input to a probabilistic seismic hazard analysis (PSHA) consists of both seismic source characterization and ground motion characterization. These two components are used to calculate probabilistic hazard results (or seismic hazard curves) at a particular site. This report provides a new seismic source model. Results and Findings The product of this report is a regional CEUS SSC model. This model includes consideration of an updated database, full assessment and incorporation of uncertainties, and the range of diverse technical interpretations from the larger technical community. …
Date: January 31, 2012
Creator: Coppersmith, Kevin J.; Salomone, Lawrence A.; Fuller, Chris W.; Glaser, Laura L.; Hanson, Kathryn L.; Hartleb, Ross D. et al.
Object Type: Report
System: The UNT Digital Library
Navajo Generating Station and Air Visibility Regulations: Alternatives and Impacts (open access)

Navajo Generating Station and Air Visibility Regulations: Alternatives and Impacts

Pursuant to the Clean Air Act, the U.S. Environmental Protection Agency (EPA) announced in 2009 its intent to issue rules for controlling emissions from Navajo Generating Station that could affect visibility at the Grand Canyon and at several other national parks and wilderness areas. The final rule will conform to what EPA determines is the best available retrofit technology (BART) for the control of haze-causing air pollutants, especially nitrogen oxides. While EPA is ultimately responsible for setting Navajo Generating Station's BART standards in its final rule, it will be the U.S. Department of the Interior's responsibility to manage compliance and the related impacts. This study aims to assist both Interior and EPA by providing an objective assessment of issues relating to the power sector.
Date: January 1, 2012
Creator: Hurlbut, D. J.; Haase, S.; Brinkman, G.; Funk, K.; Gelman, R.; Lantz, E. et al.
Object Type: Report
System: The UNT Digital Library
Systems biology approach to bioremediation (open access)

Systems biology approach to bioremediation

Bioremediation has historically been approached as a �black box� in terms of our fundamental understanding. Thus it succeeds and fails, seldom without a complete understanding of why. Systems biology is an integrated research approach to study complex biological systems, by investigating interactions and networks at the molecular, cellular, community, and ecosystem level. The knowledge of these interactions within individual components is fundamental to understanding the dynamics of the ecosystem under investigation. Understanding and modeling functional microbial community structure and stress responses in environments at all levels have tremendous implications for our fundamental understanding of hydrobiogeochemical processes and the potential for making bioremediation breakthroughs and illuminating the �black box�.
Date: January 1, 2012
Creator: Chakraborty, R.; Wu, C. H. & Hazen, T. C.
Object Type: Article
System: The UNT Digital Library
Waters, Seas and Wine: Science for Successful Climate Adaptation (open access)

Waters, Seas and Wine: Science for Successful Climate Adaptation

is a growing demand for adaptation science as a vehicle for delivering critical knowledge to public and private organizations that are attempting to adapt to the changing climate. This expansion of adaptation science is occurring, however, in the absence of a robust understanding of how that science can or should contribute to successful adaptation. For the adaptation science enterprise to be successful, it must provide knowledge that has value to adaptation actors. Accomplishing this objective, however, often requires more than just research, and, in fact, may necessitate new cultural perspectives regarding the role of science in public policy as well as new kinds of researchers and research institutions. These issues are explored through a series of case studies from Australia and the United Kingdom that illustrate the various ways in which adaptation science engages with adaptation processes and the extent to which that science can be judged as successful. The case studies demonstrate that there are multiple pathways by which adaptation science can be successful, depending on the knowledge that is needed by a particular actor at a particular stage in the adaptation process. Nevertheless, there are significant opportunities for the more explicit alignment of the needs of decision-makers and …
Date: January 1, 2012
Creator: Preston, Benjamin L
Object Type: Book
System: The UNT Digital Library
Transportation Research and Analysis Computing Center (TRACC) Year 5 Quarter 4 Progress Report. (open access)

Transportation Research and Analysis Computing Center (TRACC) Year 5 Quarter 4 Progress Report.

None
Date: January 23, 2012
Creator: Ley, H. (Energy Systems)
Object Type: Report
System: The UNT Digital Library
Texas EMS Magazine, Volume 33, Number 1, January/February 2012 (open access)

Texas EMS Magazine, Volume 33, Number 1, January/February 2012

Bimonthly magazine containing news and information that pertains to Emergency Medical Service (EMS) providers. "The magazine's goals are to help organizations function professionally as EMS providers, to educate individuals so they can perform lifesaving prehospital skills under stressful conditions, and to help the public get into the EMS system when they need it" (p. 4).
Date: January 2012
Creator: Texas. Department of State Health Services.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Heat Transfer in Complex Fluids (open access)

Heat Transfer in Complex Fluids

Amongst the most important constitutive relations in Mechanics, when characterizing the behavior of complex materials, one can identify the stress tensor T, the heat flux vector q (related to heat conduction) and the radiant heating (related to the radiation term in the energy equation). Of course, the expression 'complex materials' is not new. In fact, at least since the publication of the paper by Rivlin & Ericksen (1955), who discussed fluids of complexity (Truesdell & Noll, 1992), to the recently published books (Deshpande et al., 2010), the term complex fluids refers in general to fluid-like materials whose response, namely the stress tensor, is 'non-linear' in some fashion. This non-linearity can manifest itself in variety of forms such as memory effects, yield stress, creep or relaxation, normal-stress differences, etc. The emphasis in this chapter, while focusing on the constitutive modeling of complex fluids, is on granular materials (such as coal) and non-linear fluids (such as coal-slurries). One of the main areas of interest in energy related processes, such as power plants, atomization, alternative fuels, etc., is the use of slurries, specifically coal-water or coal-oil slurries, as the primary fuel. Some studies indicate that the viscosity of coal-water mixtures depends not only …
Date: January 1, 2012
Creator: Massoudi, Mehrdad
Object Type: Article
System: The UNT Digital Library
Reel Lines, Issue Number 31, January 2012 (open access)

Reel Lines, Issue Number 31, January 2012

Newsletter discussing fishing in Texas and educational programs offered by the Texas Parks and Wildlife Department.
Date: January 2012
Creator: Texas. Parks and Wildlife Department. Angler Education Program.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Final report for the DOE Metal Hydride Center of Excellence. (open access)

Final report for the DOE Metal Hydride Center of Excellence.

This report summarizes the R&D activities within the U.S. Department of Energy Metal Hydride Center of Excellence (MHCoE) from March 2005 to June 2010. The purpose of the MHCoE has been to conduct highly collaborative and multi-disciplinary applied R&D to develop new reversible hydrogen storage materials that meet or exceed DOE 2010 and 2015 system goals for hydrogen storage materials. The MHCoE combines three broad areas: mechanisms and modeling (which provide a theoretically driven basis for pursuing new materials), materials development (in which new materials are synthesized and characterized) and system design and engineering (which allow these new materials to be realized as practical automotive hydrogen storage systems). This Final Report summarizes the organization and execution of the 5-year research program to develop practical hydrogen storage materials for light duty vehicles. Major results from the MHCoE are summarized, along with suggestions for future research areas.
Date: January 1, 2012
Creator: Keller, Jay O. & Klebanoff, Leonard E.
Object Type: Report
System: The UNT Digital Library
Positive Feedback:  Exploring Current Approaches in Iterative Travel Demand Model Implementation (open access)

Positive Feedback: Exploring Current Approaches in Iterative Travel Demand Model Implementation

This report looked at the current Texas Department of Transportation Travel Demand Model (TxDOT TDM) and found that they do not include any impedance or accessibility measures in the trip generation step and found that the best approach is to feed back the output from the traffic assignment step to the trip distribution step.
Date: January 2012
Creator: Reeder, Phillip; Bhat, Chandra & Hall, Kevin
Object Type: Report
System: The Portal to Texas History
Fiscal Size-up: 2012-2013 (open access)

Fiscal Size-up: 2012-2013

Biennial report produced by the Texas Legislative Budget Board providing information about the structure and operation of the state government including an overview of the budget, descriptions of revenue sources and funds, the economic outlook and demographic information, and descriptions of the programs, activities, and issues of state agencies and institutions.
Date: January 2012
Creator: Texas. Legislative Budget Board.
Object Type: Report
System: The Portal to Texas History