INDEPENDENT CONFIRMATORY SURVEY SUMMARY AND RESULTS FOR THE FORD NUCLEAR REACTOR, ANN ARBOR, MICHIGAN (open access)

INDEPENDENT CONFIRMATORY SURVEY SUMMARY AND RESULTS FOR THE FORD NUCLEAR REACTOR, ANN ARBOR, MICHIGAN

At the NRC�s request, ORAU conducted confirmatory surveys of the FNR during the period of December 4 through 6, 2012. The survey activities included visual inspections and measurement and sampling activities. Confirmatory activities also included the review and assessment of UM�s project documentation and methodologies. Surface scans identified elevated activity in two areas. The first area was on a wall outside of Room 3103 and the second area was in the southwest section on the first floor. The first area was remediated to background levels. However, the second area was due to gamma shine from a neighboring source storage area. A retrospective analysis of UM�s FSS data shows that for the SUs investigated by the ORAU survey team, UM met the survey requirements set forth in the FSSP. The total mean surface activity values were directly compared with the mean total surface activity reported by UM. Mean surface activity values determined by UM were within two standard deviations of the mean determined by ORAU. Additionally, all surface activity values were less than the corresponding gross beta DCGLW. Laboratory analysis of the soil showed that COC concentrations were less than the respective DCGLW values. For the inter-lab comparison, the DER was …
Date: July 25, 2013
Creator: Altic, Nick A.
Object Type: Report
System: The UNT Digital Library
Treasury Securities and the U.S. Sovereign Credit Default Swap Market (open access)

Treasury Securities and the U.S. Sovereign Credit Default Swap Market

This report explains how the sovereign credit default swap (CDS) market works and how such CDS price trends may illuminate fiscal stresses facing sovereign governments. Although CDS prices may be imperfect measures of the federal government's fiscal condition, some investors may try to glean information from those price trends. CDS prices have been playing an important role in the European government debt markets and could potentially affect U.S debt markets in the future. European policymakers have debated certain restrictions on types of sovereign CDS trading, and such calls for reform may be of interest to U.S. lawmakers.
Date: July 25, 2011
Creator: Austin, D. Andrew & Miller, Rena S.
Object Type: Report
System: The UNT Digital Library
241-SY Tank Farm Construction Extent of Condition Review for Tank Integrity (open access)

241-SY Tank Farm Construction Extent of Condition Review for Tank Integrity

This report provides the results of an extent of condition construction history review for tanks 241-SY-101, 241-SY-102, and 241-SY-103. The construction history of the 241-SY tank farm has been reviewed to identify issues similar to those experienced during tank 241-AY-102 construction. Those issues and others impacting integrity are discussed based on information found in available construction records, using tank 241-AY-102 as the comparison benchmark. In the 241-SY tank farm, the third DST farm constructed, refractory quality and stress relief were improved, while similar tank and liner fabrication issues remained.
Date: July 25, 2013
Creator: Barnes, Travis J.; Boomer, Kayle D.; Gunter, Jason R. & Venetz, Theodore J.
Object Type: Report
System: The UNT Digital Library
The I=2 pi-pi S-wave Scattering Phase Shift from Lattice QCD (open access)

The I=2 pi-pi S-wave Scattering Phase Shift from Lattice QCD

None
Date: July 25, 2011
Creator: Beane, S.; Chang, E.; Detmold, W.; Lin, H. W.; Luu, T.; Orginos, K. et al.
Object Type: Article
System: The UNT Digital Library
Energy Policy: 113th Congress Issues (open access)

Energy Policy: 113th Congress Issues

Report that discusses the energy policy in the United States, which is focused on three major goals: assuring a secure supply of energy, keeping energy costs low, and protecting the environment.
Date: July 25, 2013
Creator: Behrens, Carl E.
Object Type: Report
System: The UNT Digital Library
Survey of SRF guns (open access)

Survey of SRF guns

Developing Superconducting RF (SRF) electron guns is an active field with several laboratories working on different gun designs. While the first guns were based on elliptic cavity geometries, Quarter Wave Resonator (QWR) option is gaining popularity. QWRs are especially well suited for producing beams with high charge per bunch. In this talk we will describe recent progress in developing both types of SRF guns. SRF guns made excellent progress in the last two years. Several guns generated beams and one, at HZDR, injected beam into an accelerator. By accomplishing this, HZDR/ELBE gun demonstrated feasibility of the SRF gun concept with a normal-conducting Cs{sub 2}Te cathode. The cathode demonstrated very good performance with the lifetime of {approx}1 year. However, for high average current/high bunch charge operation CsK{sub 2}Sb is preferred as it needs green lasers, unlike UV laser for the Cs{sub 2}Te, which makes it easier to build laser/optics systems. Other high QE photocathodes are being developed for SRF guns, most notably diamond-amplified photocathode. Several QWR guns are under development with one producing beam already. They are very promising for high bunch charge operation. The field is very active and we should expect more good results soon.
Date: July 25, 2011
Creator: Belomestnykh, S.
Object Type: Article
System: The UNT Digital Library
Superconducting 112 MHz QWR electron gun (open access)

Superconducting 112 MHz QWR electron gun

Brookhaven National Laboratory and Niowave, Inc. have designed and fabricated a superconducting 112 MHz quarter-wave resonator (QWR) electron gun. The first cold test of the QWR cryomodule has been completed at Niowave. The paper describes the cryomodule design, presents the cold test results, and outline plans to upgrade the cryomodule. Future experiments include studies of different photocathodes and use for the coherent electron cooling proof-of-principle experiment. Two cathode stalk options, one for multi-alkali photocathodes and the other one for a diamond-amplified photocathode, are discussed. A quarter-wave resonator concept of superconducting RF (SRF) electron gun was proposed at BNL for electron cooling hadron beams in RHIC. QWRs can be made sufficiently compact even at low RF frequencies (long wavelengths). The long wavelength allows to produce long electron bunches, thus minimizing space charge effects and enabling high bunch charge. Also, such guns should be suitable for experiments requiring high average current electron beams. A 112 MHz QWR gun was designed, fabricated, and cold-tested in collaboration between BNL and Niowave. This is the lowest frequency SRF gun ever tested successfully. In this paper we describe the gun design and fabrication, present the cold test results, and outline our plans. This gun will also …
Date: July 25, 2011
Creator: Belomestnykh, S.; Ben-Zvi, Ilan; Boulware, C. H.; Chang, X.; Grimm, T. L.; Rao, T. et al.
Object Type: Article
System: The UNT Digital Library
The Origin of Mass (open access)

The Origin of Mass

None
Date: July 25, 2013
Creator: Boyle, P.; Buchoff, M.; Christ, N.; Izubuchi, T.; Jung, C.; Luu, T. et al.
Object Type: Article
System: The UNT Digital Library
MPO B593110 - Final Report (open access)

MPO B593110 - Final Report

National Security Technologies, LLC (NSTec) shall provide one (1) Mechanical Engineer to support the Linear Collider Subsystem Development Program at Lawrence Livermore National Security, LLC (LLNS). The NSTec Mechanical Engineer's efforts will include engineering, design, and drawing support for the Vacuum Seal Test. NSTec will also provide a final report of the setup and input to LLNL's project management on project status. The NSTec Mechanical Engineer's efforts will also include engineering, design, and drawing support to the conceptual design for manufacturing of the Flux Concentrator Magnet. NSTec will also contribute to LLNS's final report on the Flux Concentrator Magnet. The deliverables are drawings, sketches, engineering documents, and final reports delivered to the LLNS Technical Representative.
Date: July 25, 2011
Creator: Brooksby, C
Object Type: Report
System: The UNT Digital Library
Economic Impacts of Wind Turbine Development in U.S. Counties (open access)

Economic Impacts of Wind Turbine Development in U.S. Counties

The objective is to address the research question using post-project construction, county-level data, and econometric evaluation methods. Wind energy is expanding rapidly in the United States: Over the last 4 years, wind power has contributed approximately 35 percent of all new electric power capacity. Wind power plants are often developed in rural areas where local economic development impacts from the installation are projected, including land lease and property tax payments and employment growth during plant construction and operation. Wind energy represented 2.3 percent of the U.S. electricity supply in 2010, but studies show that penetrations of at least 20 percent are feasible. Several studies have used input-output models to predict direct, indirect, and induced economic development impacts. These analyses have often been completed prior to project construction. Available studies have not yet investigated the economic development impacts of wind development at the county level using post-construction econometric evaluation methods. Analysis of county-level impacts is limited. However, previous county-level analyses have estimated operation-period employment at 0.2 to 0.6 jobs per megawatt (MW) of power installed and earnings at $9,000/MW to $50,000/MW. We find statistically significant evidence of positive impacts of wind development on county-level per capita income from the OLS and …
Date: July 25, 2011
Creator: Brown, J.; Hoen, B.; Lantz, E.; Pender, J. & Wiser, R.
Object Type: Article
System: The UNT Digital Library
What Coexists with the Ferromagnetic Metallic Phase in Manganites? (open access)

What Coexists with the Ferromagnetic Metallic Phase in Manganites?

Colossal magnetoresistance, whereby the application of a magnetic field reduces the resistivity of a manganite by orders of magnitude, is generally believed to occur because of coexisting phases. Development of a complete theory to explain the phenomenon requires that the exact nature of these phases be known. We used resonant elastic soft x-ray scattering to examine the superlattice order that exists in La{sub 0.35}Pr{sub 0.275}Ca{sub 0.375}MnO{sub 3} above and below the Curie temperature. By measuring the resonance profile of the scattered x-rays at different values of q, we disentangle the contributions of orbital order and antiferromagnetism to the scattering signal above the Curie temperature. Below the Curie temperature, we see no signal from orbital order, and only antiferromagnetism coexists with the dominant ferromagnetic metallic phase.
Date: July 25, 2012
Creator: Burkhardt, Mark H.; Hossain, M.A.; Sarkar, S.; Achkar, A.J.; Hawthorn, D.G.; Sutarto, R. et al.
Object Type: Article
System: The UNT Digital Library
Clearwater and Wineskin Sub-CAU Flow and Transport Models (open access)

Clearwater and Wineskin Sub-CAU Flow and Transport Models

None
Date: July 25, 2012
Creator: Carle, S F
Object Type: Report
System: The UNT Digital Library
Shot Planning and Analysis Tools (open access)

Shot Planning and Analysis Tools

Shot planning and analysis tools (SPLAT) integrate components necessary to help achieve a high over-all operational efficiency of the National Ignition Facility (NIF) by combining near and long-term shot planning, final optics demand and supply loops, target diagnostics planning, and target fabrication requirements. Currently, the SPLAT project is comprised of two primary tool suites for shot planning and optics demand. The shot planning component provides a web-based interface to selecting and building a sequence of proposed shots for the NIF. These shot sequences, or 'lanes' as they are referred to by shot planners, provide for planning both near-term shots in the Facility and long-term 'campaigns' in the months and years to come. The shot planning capabilities integrate with the Configuration Management Tool (CMT) for experiment details and the NIF calendar for availability. Future enhancements will additionally integrate with target diagnostics planning and target fabrication requirements tools. The optics demand component is built upon predictive modelling of maintenance requirements on the final optics as a result of the proposed shots assembled during shot planning. The predictive models integrate energetics from a Laser Performance Operations Model (LPOM), the status of the deployed optics as provided by the online Final Optics Inspection system, …
Date: July 25, 2011
Creator: Casey, A.; Beeler, R.; Conder, A.; Fallejo, R.; Flegel, M.; Hutton, M. et al.
Object Type: Article
System: The UNT Digital Library
The President's Budget: Overview of Structure and Timing of Submission to Congress (open access)

The President's Budget: Overview of Structure and Timing of Submission to Congress

Report that contains a brief overview of the origins, deadlines, and typical content of the President's budget.
Date: July 25, 2013
Creator: Christensen, Michelle D.
Object Type: Report
System: The UNT Digital Library
Breaking and Moving Hotspots in a Large Grain Nb Cavity with a Laser Beam (open access)

Breaking and Moving Hotspots in a Large Grain Nb Cavity with a Laser Beam

Magnetic vortices pinned near the inner surface of SRF Nb cavities are a possible source of RF hotspots, frequently observed by temperature mapping of the cavities outer surface at RF surface magnetic fields of about 100 mT. Theoretically, we expect that the thermal gradient provided by a 10 W green laser shining on the inner cavity surface at the RF hotspot locations can move pinned vortices to different pinning locations. The experimental apparatus to send the beam onto the inner surface of a photoinjector-type large-grain Nb cavity is described. Preliminary results on the changes in thermal maps observed after applying the laser heating are also reported.
Date: July 25, 2011
Creator: Ciovati, G.; Cheng, G.; Flood, R. J.; Jordan, K.; Kneisel, P.; Morrone, M. L. et al.
Object Type: Article
System: The UNT Digital Library
Radiation Field Simulation and Estimation Algorithms for a Mobile Sensor and a Stationary Unknown Source (open access)

Radiation Field Simulation and Estimation Algorithms for a Mobile Sensor and a Stationary Unknown Source

None
Date: July 25, 2012
Creator: Clark, G. A.
Object Type: Report
System: The UNT Digital Library
U.S.-Africa Leaders Summit: Frequently Asked Questions and Background (open access)

U.S.-Africa Leaders Summit: Frequently Asked Questions and Background

This report provides information about the early August 2014 U.S.-Africa Leaders Summit in Washington, DC, and policy issues likely to be addressed by participants in the summit and other events being held in conjunction with it.
Date: July 25, 2014
Creator: Cook, Nicolas; Arieff, Alexis; Blanchard, Lauren Ploch & Williams, Brock R.
Object Type: Report
System: The UNT Digital Library
An Overview and Comparison of Senate Proposals to Extend the “Bush Tax Cuts”: S. 3412 and S. 3413 (open access)

An Overview and Comparison of Senate Proposals to Extend the “Bush Tax Cuts”: S. 3412 and S. 3413

This report provides an overview of the Bush tax cuts, followed by brief summaries of the Reid and Hatch proposals, respectively. Revenue loss estimates of certain provisions of these bills are also included, as well as a brief summary of H.R. 8. In addition, detailed summary tables comparing the Reid and Hatch proposals—to each other and to current law—are provided. Finally, this report concludes with a brief overview of the current policy debate surrounding the partial or full extension of the Bush tax cuts.
Date: July 25, 2012
Creator: Crandall-Hollick, Margot L.
Object Type: Report
System: The UNT Digital Library
The Republic of South Sudan: Opportunities and Challenges for Africa's Newest Country (open access)

The Republic of South Sudan: Opportunities and Challenges for Africa's Newest Country

This report discusses the situation in South Sudan as it faces a number of challenges in the coming years. Relations between Juba, in South Sudan, and Khartoum are poor, and there are a number of unresolved issues between them. The crisis in the disputed area of Abyei remains a contentious issue, despite a temporary agreement reached in mid-June 2011.
Date: July 25, 2011
Creator: Dagne, Ted
Object Type: Report
System: The UNT Digital Library
NanoComposite Stainless Steel Powder Technologies (open access)

NanoComposite Stainless Steel Powder Technologies

Oak Ridge National Laboratory has been investigating a new class of Fe-based amorphous material stemming from a DARPA, Defense Advanced Research Projects Agency initiative in structural amorphous metals. Further engineering of the original SAM materials such as chemistry modifications and manufacturing processes, has led to the development of a class of Fe based amorphous materials that upon processing, devitrify into a nearly homogeneous distribution of nano sized complex metal carbides and borides. The powder material is produced through the gas atomization process and subsequently utilized by several methods; laser fusing as a coating to existing components or bulk consolidated into new components through various powder metallurgy techniques (vacuum hot pressing, Dynaforge, and hot isostatic pressing). The unique fine scale distribution of microstructural features yields a material with high hardness and wear resistance compared to material produced through conventional processing techniques such as casting while maintaining adequate fracture toughness. Several compositions have been examined including those specifically designed for high hardness and wear resistance and a composition specifically tailored to devitrify into an austenitic matrix (similar to a stainless steel) which poses improved corrosion behavior.
Date: July 25, 2012
Creator: DeHoff, R. & Glasgow, C. (MesoCoat, Inc.)
Object Type: Report
System: The UNT Digital Library
Software solutions manage the definition, operation, maintenance and configuration control of the National Ignition Facility (open access)

Software solutions manage the definition, operation, maintenance and configuration control of the National Ignition Facility

The National Ignition Facility (NIF) is the world's largest laser composed of millions of individual parts brought together to form one massive assembly. Maintaining control of the physical definition, status and configuration of this structure is a monumental undertaking yet critical to the validity of the shot experiment data and the safe operation of the facility. The NIF business application suite of software provides the means to effectively manage the definition, build, operation, maintenance and configuration control of all components of the National Ignition Facility. State of the art Computer Aided Design software applications are used to generate a virtual model and assemblies. Engineering bills of material are controlled through the Enterprise Configuration Management System. This data structure is passed to the Enterprise Resource Planning system to create a manufacturing bill of material. Specific parts are serialized then tracked along their entire lifecycle providing visibility to the location and status of optical, target and diagnostic components that are key to assessing pre-shot machine readiness. Nearly forty thousand items requiring preventive, reactive and calibration maintenance are tracked through the System Maintenance & Reliability Tracking application to ensure proper operation. Radiological tracking applications ensure proper stewardship of radiological and hazardous materials and …
Date: July 25, 2011
Creator: Dobson, D.; Churby, A.; Krieger, E.; Maloy, D. & White, K.
Object Type: Article
System: The UNT Digital Library
2012 MICROBIAL STRESS RESPONSE GORDON RESEARCH CONFERENCE, JULY 20-25, 2012 (open access)

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
Failure to Register as a Sex Offender: A Legal Analysis of 18 U.S.C. 2250 (open access)

Failure to Register as a Sex Offender: A Legal Analysis of 18 U.S.C. 2250

Section 2250 outlaws an individual's failure to comply with federal Sex Offender Registration and Notification Act requirements. The act demands that an individual- previously convicted of a qualifying federal, state, or foreign sex offense- register with state, territorial, or tribal authorities. This report contains information on the obligation to register and maintain registration, knowing failure to register, Constitutional considerations, and more as related to the issue.
Date: July 25, 2013
Creator: Doyle, Charles
Object Type: Report
System: The UNT Digital Library
Detention of U.S. Persons as Enemy Belligerents (open access)

Detention of U.S. Persons as Enemy Belligerents

Report that provides a background to the detention of enemy belligerents, followed by a brief introduction to the law of war pertinent to the detention of different categories of individuals.
Date: July 25, 2013
Creator: Elsea, Jennifer K.
Object Type: Report
System: The UNT Digital Library