Secondary Electron Yield Measurements of Fermilab's Main Injector Vacuum Vessel (open access)

Secondary Electron Yield Measurements of Fermilab's Main Injector Vacuum Vessel

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Date: September 11, 2013
Creator: Scott, D. J.; Capista, D.; Duel, K. L.; Zwaska, R. M.; /Fermilab; Greenwald, S. et al.
Object Type: Article
System: The UNT Digital Library
Nevada National Security Site Environmental Report 2012 Attachment A: Site Description (open access)

Nevada National Security Site Environmental Report 2012 Attachment A: Site Description

This attachment expands on the general description of the Nevada National Security Site (NNSS) presented in the Introduction to the Nevada National Security Site Environmental Report 2012 (National Security Technologies, LLC [NSTec], 2013). Included are subsections that summarize the site’s geological, hydrological, climatological, and ecological setting and the cultural resources of the NNSS. The subsections are meant to aid the reader in understanding the complex physical and biological environment of the NNSS. An adequate knowledge of the site’s environment is necessary to assess the environmental impacts of new projects, design and implement environmental monitoring activities for current site operations, and assess the impacts of site operations on the public residing in the vicinity of the NNSS. The NNSS environment contributes to several key features of the site that afford protection to the inhabitants of adjacent areas from potential exposure to radioactivity or other contaminants resulting from NNSS operations. These key features include the general remote location of the NNSS, restricted access, extended wind transport times, the great depths to slow-moving groundwater, little or no surface water, and low population density. This attachment complements the annual summary of monitoring program activities and dose assessments presented in the main body of this …
Date: September 11, 2013
Creator: Wills, Cathy A
Object Type: Report
System: The UNT Digital Library
Identification and Characterization of Soluble Factors Involved in Delayed Effects of Low Dose Radiation. Final report (open access)

Identification and Characterization of Soluble Factors Involved in Delayed Effects of Low Dose Radiation. Final report

This is a 'glue grant' that was part of a DOE Low Dose project entitled 'Identification and Characterization of Soluble Factors Involved in Delayed Effects of Low Dose Radiation'. This collaborative program has involved Drs. David L. Springer from Pacific Northwest National Laboratory (PNNL), John H. Miller from Washington State University, Tri-cities (WSU) and William F. Morgan then from the University of Maryland, Baltimore (UMB). In July 2008, Dr. Morgan moved to PNNL and Dr. Janet E. Baulch became PI for this project at University of Maryland. In November of 2008, a one year extension with no new funds was requested to complete the proteomic analyses. The project stemmed from studies in the Morgan laboratory demonstrating that genomically unstable cells secret a soluble factor or factors into the culture medium, that cause cytogenetic aberrations and apoptosis in normal parental GM10115 cells. The purpose of this project was to identify the death inducing effect (DIE) factor or factors, estimate their relative abundance, identify the cell signaling pathways involved and finally recapitulate DIE in normal cells by exogenous manipulation of putative DIE factors in culture medium. As reported in detail in the previous progress report, analysis of culture medium from the parental …
Date: September 11, 2013
Creator: Baulch, Janet
Object Type: Report
System: The UNT Digital Library
LCLS Ultrafast Science Instruments II (LUSI-II) Proposal (open access)

LCLS Ultrafast Science Instruments II (LUSI-II) Proposal

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Date: September 11, 2013
Creator: Arthur, John; Barnett, Bronwyn; Bergmann, Uwe; Bostedt, Christoph; Boutet, Sebastien; Bozek, John et al.
Object Type: Report
System: The UNT Digital Library
Evaluating the Contribution of Climate Forcing and Forest Dynamics to Accelerating Carbon Sequestration by Forest Ecosystems in the Northeastern U.S. (open access)

Evaluating the Contribution of Climate Forcing and Forest Dynamics to Accelerating Carbon Sequestration by Forest Ecosystems in the Northeastern U.S.

We used 10 Hz eddy flux signals and 0.2 Hz incident radiation (global shortwave and PAR) records from Harvard Forest (Massachusetts) and Tapajos National Forest (Brazil) to establish empirical relationships among directly measured cloud type and cover percentage and corresponding PAR fluctuations and its diffuse fraction. In future work such a cloud characterization will be related to water and light use efficiency estimates for each of these ecosystems. We developed empirical relationships to link sky cover type and fraction (measured with the ceilometer) to incident direct and diffuse PAR. We developed a methodology for constructing synthetic incident solar radiation time series based on operational reports of sky cover and cloud type from National Weather Service METAR reports. The aim of this work is to document the temporal and spectral properties radiation incident on the canopy, as a first step toward developing a sky-type parameterization for the net carbon uptake models.
Date: September 11, 2013
Creator: Fitzjarrald, David Roy
Object Type: Report
System: The UNT Digital Library
REDUCTIONS WITHOUT REGRET: AVOIDING WRONG TURNS, ROACH MOTELS, AND BOX CANYONS (open access)

REDUCTIONS WITHOUT REGRET: AVOIDING WRONG TURNS, ROACH MOTELS, AND BOX CANYONS

This is the third of three papers (in addition to an introductory summary) aimed at providing a framework for evaluating future reductions or modifications of the U.S. nuclear force, first by considering previous instances in which nuclear-force capabilities were eliminated; second by looking forward into at least the foreseeable future at the features of global and regional deterrence (recognizing that new weapon systems currently projected will have expected lifetimes stretching beyond our ability to predict the future); and third by providing examples of past or possible undesirable outcomes in the shaping of the future nuclear force, as well as some closing thoughts for the future. In this paper, we provide one example each of our judgments on what constitutes a box canyon, a roach motel, and a wrong turn: � Wrong Turn: The Reliable Replacement Warhead � Roach Motel: SRAM T vs the B61 � A Possible Box Canyon: A Low-Yield Version of the W76 SLBM Warhead Recognizing that new nuclear missions or weapons are not demanded by current circumstances � a development path that yields future capabilities similar to those of today, which are adequate if not always ideal, and a broader national-security strategy that supports nonproliferation and arms …
Date: September 11, 2013
Creator: Swegle, J. & Tincher, D.
Object Type: Report
System: The UNT Digital Library
Nevada National Security Site Environmental Report 2012 Summary (open access)

Nevada National Security Site Environmental Report 2012 Summary

This document is a summary of the full Nevada National Security Site Environmental Report 2012
Date: September 11, 2013
Creator: Wills, Cathy A
Object Type: Report
System: The UNT Digital Library
Analysis Of 2H-Evaporator Scale Wall [HTF-13-82] And Pot Bottom [HTF-13-77] Samples (open access)

Analysis Of 2H-Evaporator Scale Wall [HTF-13-82] And Pot Bottom [HTF-13-77] Samples

Savannah River Remediation (SRR) is planning to remove a buildup of sodium aluminosilicate scale from the 2H-evaporator pot by loading and soaking the pot with heated 1.5 M nitric acid solution. Sampling and analysis of the scale material has been performed so that uranium and plutonium isotopic analysis can be input into a Nuclear Criticality Safety Assessment (NCSA) for scale removal by chemical cleaning. Historically, since the operation of the Defense Waste Processing Facility (DWPF), silicon in the DWPF recycle stream combines with aluminum in the typical tank farm supernate to form sodium aluminosilicate scale mineral deposits in the 2H-evaporator pot and gravity drain line. The 2H-evaporator scale samples analyzed by Savannah River National Laboratory (SRNL) came from two different locations within the evaporator pot; the bottom cone sections of the 2H-evaporator pot [Sample HTF-13-77] and the wall 2H-evaporator [sample HTF-13-82]. X-ray diffraction analysis (XRD) confirmed that both the 2H-evaporator pot scale and the wall samples consist of nitrated cancrinite (a crystalline sodium aluminosilicate solid) and clarkeite (a uranium oxyhydroxide mineral). On ''as received'' basis, the bottom pot section scale sample contained an average of 2.59E+00 {+-} 1.40E-01 wt % total uranium with a U-235 enrichment of 6.12E-01 {+-} 1.48E-02 …
Date: September 11, 2013
Creator: Oji, L. N.
Object Type: Report
System: The UNT Digital Library
Dielectric Characterization and Microwave Interferometry of HMX-based Explosives (open access)

Dielectric Characterization and Microwave Interferometry of HMX-based Explosives

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Date: September 11, 2013
Creator: Tringe, J W; Kane, R J; Lorenz, K T; Baluyot, E V & Vandersall, K S
Object Type: Article
System: The UNT Digital Library
Kshort Production in ALICE at the LHC (open access)

Kshort Production in ALICE at the LHC

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Date: September 11, 2013
Creator: Tyler, M & Soltz, R
Object Type: Report
System: The UNT Digital Library
Nevada National Security Site Environmental Report 2012 (open access)

Nevada National Security Site Environmental Report 2012

This report was prepared to meet the information needs of the public and the requirements and guidelines of the U.S. Department of Energy (DOE) for annual site environmental reports. It was prepared by National Security Technologies, LLC (NSTec), for the U.S. Department of Energy, National Nuclear Security Administration Nevada Field Office (NNSA/NFO) (formerly designated as the Nevada Site Office [NNSA/NSO]). The new field office designation occurred in March 2013. Published reports cited in this 2012 report, therefore, may bear the name or authorship of NNSA/NSO. This and previous years’ reports, called Annual Site Environmental Reports (ASERs), Nevada Test Site Environmental Reports (NTSERs), and, beginning in 2010, Nevada National Security Site Environmental Reports (NNSSERs), are posted on the NNSA/NFO website at http://www.nv.energy.gov/library/publications/aser.aspx. This NNSSER was prepared to satisfy DOE Order DOE O 231.1B, “Environment, Safety and Health Reporting.” Its purpose is to (1) report compliance status with environmental standards and requirements, (2) present results of environmental monitoring of radiological and nonradiological effluents, (3) report estimated radiological doses to the public from releases of radioactive material, (4) summarize environmental incidents of noncompliance and actions taken in response to them, (5) describe the NNSA/NFO Environmental Management System and characterize its performance, and (6) …
Date: September 11, 2013
Creator: Wills, Cathy
Object Type: Report
System: The UNT Digital Library
FINAL REPORT (MILESTONE DATE 9/30/13) FOR SUBCONTRACT NO. B603393: "CLUSTERING AND RANDOMIZATION FOR LARGE GRAPHS AND HYPERGRAPHS" (open access)

FINAL REPORT (MILESTONE DATE 9/30/13) FOR SUBCONTRACT NO. B603393: "CLUSTERING AND RANDOMIZATION FOR LARGE GRAPHS AND HYPERGRAPHS"

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Date: September 11, 2013
Creator: De Sterck, H
Object Type: Report
System: The UNT Digital Library
Lightweighting Automotive Materials for Increased Fuel Efficiency and Delivering Advanced Modeling and Simulation Capabilities to U.S. Manufacturers (open access)

Lightweighting Automotive Materials for Increased Fuel Efficiency and Delivering Advanced Modeling and Simulation Capabilities to U.S. Manufacturers

Abstract The National Center for Manufacturing Sciences (NCMS) worked with the U.S. Department of Energy (DOE), National Energy Technology Laboratory (NETL), to bring together research and development (R&D) collaborations to develop and accelerate the knowledgebase and infrastructure for lightweighting materials and manufacturing processes for their use in structural and applications in the automotive sector. The purpose/importance of this DOE program: • 2016 CAFÉ standards. • Automotive industry technology that shall adopt the insertion of lightweighting material concepts towards manufacturing of production vehicles. • Development and manufacture of advanced research tools for modeling and simulation (M&S) applications to reduce manufacturing and material costs. • U.S. competitiveness that will help drive the development and manufacture of the next generation of materials. NCMS established a focused portfolio of applied R&D projects utilizing lightweighting materials for manufacture into automotive structures and components. Areas that were targeted in this program: • Functionality of new lightweighting materials to meet present safety requirements. • Manufacturability using new lightweighting materials. • Cost reduction for the development and use of new lightweighting materials. The automotive industry’s future continuously evolves through innovation, and lightweight materials are key in achieving a new era of lighter, more efficient vehicles. Lightweight materials are …
Date: September 11, 2013
Creator: Hale, Steve
Object Type: Report
System: The UNT Digital Library
Gamma-ray Emission After Neutron Capture: Modeling for Excitation Energies Involving Strongly Overlapping Resonances (open access)

Gamma-ray Emission After Neutron Capture: Modeling for Excitation Energies Involving Strongly Overlapping Resonances

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Date: September 11, 2013
Creator: Escher, J. E.
Object Type: Report
System: The UNT Digital Library
Characterization of a megapixel CMOS charge dump and read camera (open access)

Characterization of a megapixel CMOS charge dump and read camera

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Date: September 11, 2013
Creator: Kimbrough, J R; Bell, P M; Datte, P S; Thao, M S; de Dios, E & Peters, A S
Object Type: Article
System: The UNT Digital Library
Advanced Simulation and Computing Fiscal Year 14 Implementation Plan, Rev. 0.5 (open access)

Advanced Simulation and Computing Fiscal Year 14 Implementation Plan, Rev. 0.5

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Date: September 11, 2013
Creator: Meisner, R.; McCoy, M.; Archer, B. & Matzen, M.
Object Type: Report
System: The UNT Digital Library
Strangeness Production in ALICE at the LHC (open access)

Strangeness Production in ALICE at the LHC

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Date: September 11, 2013
Creator: Harton, Austin; Carmona, Rodney; Tyler, Micheal; Soltz, Ron & Garcia, Edmundo
Object Type: Report
System: The UNT Digital Library
Lambda and Anti-Labmda production in the ALICE experiment at the LHC. (open access)

Lambda and Anti-Labmda production in the ALICE experiment at the LHC.

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Date: September 11, 2013
Creator: Carmona, Rodney; Tyler, Mike, II; Soltz, Ron; Harton, Austin & Garcia, Edmundo
Object Type: Report
System: The UNT Digital Library