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U.S. Department of Justice Declinations of Indian Country Criminal Matters

Description: Correspondence issued by the Government Accountability Office with an abstract that begins "The Department of Justice (DOJ) has reported that crime rates experienced by American Indians are two and a half times higher than those experienced by the general population in the United States. Specifically, from 1992 to 2001 American Indians experienced violent crimes at a rate of 101 violent crimes per 1,000 person annually, compared to the national rate of 41 per 1,000 persons. The federal governme… more
Date: December 13, 2010
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Iran Sanctions

Description: This report focuses on the United States' relationship with Iran and how the Obama Administration is handling prior administration's economic sanctions against Iran. The Obama Administration's policy approach toward Iran has contrasted with the Bush Administration's by attempting to couple the imposition of sanctions to an active and direct U.S. effort to negotiate with Iran on the nuclear issue. That approach was not initially altered because of the Iranian dispute over its June 12, 2009, elec… more
Date: December 13, 2010
Creator: Katzman, Kenneth
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Actual Farm Bill Spending and Cost Estimates

Description: This report discusses the budget for the 2008 Farm Bill, and its reauthorization. Moreover, the report discusses the increasing level of demand for fiscal constraint and the current large budget deficits.
Date: December 13, 2010
Creator: Monke, Jim & Johnson, Renée
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The National Ignition Facility and the Promise of Inertial Fusion Energy

Description: The National Ignition Facility (NIF) at the Lawrence Livermore National Laboratory (LLNL) in Livermore, CA, is now operational. The NIF is the world's most energetic laser system capable of producing 1.8 MJ and 500 TW of ultraviolet light. By concentrating the energy from its 192 extremely energetic laser beams into a mm{sup 3}-sized target, NIF can produce temperatures above 100 million K, densities of 1,000 g/cm{sup 3}, and pressures 100 billion times atmospheric pressure - conditions that ha… more
Date: December 13, 2010
Creator: Moses, E I
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Direct Comparison of Brookhaven Reflectivity Measurements with Free-Electron Theory

Description: The reflectivity at normal incidence of copper and aluminum samples was recently measured over a large frequency range at Brookhaven by one of us (JT). Then using the Kramers-Kroning integrals, and assuming the free-electron model of conductivity, the dependence of conductivity on frequency was obtained. The results seemed to suggest, for example, that the dc conductivities of the copper and evaporated aluminum samples are a factor of 3 lower than expected. We propose in this report, instead, d… more
Date: December 13, 2010
Creator: Bane, Karl L.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Design Report for the Optical Transition Radiation Imager for the LCLS Undulator

Description: The Linac Coherent Light Source (LCLS), a free-electron x-ray laser, is under design and construction. Its high-intensity electron beam, 3400 A in peak current and 46 TW in peak power, is concentrated in a small area (37 micrometer in rms radius) inside its undulator. Ten optical transition radiation (OTR) imagers are planned between the undulator segments for characterizing the transverse profiles of the electron beam. In this note, we report on the optical and mechanical design of the OTR ima… more
Date: December 13, 2010
Creator: Yang, Bingxin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Vibrating Wire System For Quadrupole Fiducialization

Description: A vibrating wire system is being developed to fiducialize the quadrupoles between undulator segments in the LCLS. This note provides a detailed analysis of the system. The LCLS will have quadrupoles between the undulator segments to keep the electron beam focused. If the quadrupoles are not centered on the beam axis, the beam will receive transverse kicks, causing it to deviate from the undulator axis. Beam based alignment will be used to move the quadrupoles onto a straight line, but an initia… more
Date: December 13, 2010
Creator: Wolf, Zachary
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Triggering for Magnetic Field Measurements of the LCLS Undulators

Description: A triggering system for magnetic field measurements of the LCLS undulators has been built with a National Instruments PXI-1002 and a Xylinx FPGA board. The system generates single triggers at specified positions, regardless of encoder sensor jitter about a linear scale.
Date: December 13, 2010
Creator: Hacker, Kirsten
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

MIDAS (Material Implementation, Database, and Analysis Source): A comprehensive resource of material properties

Description: MIDAS is aimed to be an easy-to-use and comprehensive common source for material properties including both experimental data and models and their parameters. At LLNL, we will develop MIDAS to be the central repository for material strength related data and models with the long-term goal to encompass other material properties. MIDAS will allow the users to upload experimental data and updated models, to view and read materials data and references, to manipulate models and their parameters, and t… more
Date: December 13, 2010
Creator: Tang, M.; Norquist, P.; Barton, N.; Durrenberger, K.; Florando, J. & Attia, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Location of Maximum Credible Beam Losses in LCLS Injector

Description: The memo describes the maximum credible beam the LCLS injector can produce and lose at various locations along the beamline. The estimation procedure is based upon three previous reports [1, 2, 3]. While specific numbers have been updated to accurately reflect the present design parameters, the conclusions are very similar to those given in Ref 1. The source of the maximum credible beam results from the explosive electron emission from the photocathode if the drive laser intensity exceeds the t… more
Date: December 13, 2010
Creator: Mao, Stan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Thermal Degradation Behavior of Siloxane Elastomer Impregnated Carbon Nanotube Areogel Networks

Description: A novel class of nanoporous graphitic carbon foams has been synthesized. Unprecedented properties - electrically conductive, thermally stable (> 1000 C), and mechanically robust. Improved transport properties (DWNT-CA, SWNT-CA) - greater than 100% enhancement in thermal conductivity, 100-400% improvement in electrical conductivity. Rich mechanical deformation behavior (SWNT-CA) - stiff ({approx}100% improvement of elastic modulus), energy dissipation, fracture toughness, and fatigue behavior… more
Date: December 13, 2010
Creator: Lewicki, J P & Worsley, M A
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Earth's Magnetic Field Measurements for the LCLS Undulators

Description: Measurements of the earth's magnetic field at several locations at SLAC were conducted to determine the possible field error contribution from tuning the undulators in a location with a different magnetic field than that which will be found in the undulator hall. An average difference of 0.08 {+-} 0.04 Gauss has been measured between the downward earth's field components in the test facility and SLAC tunnel locations.
Date: December 13, 2010
Creator: Hacker, Kirsten
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Wakefield Computations for the Injector (Part I)

Description: In this document, we report on basic wakefield computations used to establish the impedance budget for the LCLS injector. Systematic comparisons between analytic formulae and results from ABCI are done. Finally, a comparison between 2D and 3D wakefield calculations are given for a cross. The three parts of the document are presented as follows: (1) ABCI computations for a few structures (Flange, Bellows...); (2) Comparison analytic with ABCI runs; and (3) Comparison Cross and Cavity using MAFIA. more
Date: December 13, 2010
Creator: Limborg-Deprey, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Environmental Reactivity of Solid-State Hydrogen Systems: Fundamental Testing and Evaluation

Description: In order to enable the commercial acceptance of solid state hydrogen storage materials and systems it is important to understand the risks associated with the environmental exposure of various materials. In some instances, these materials are sensitive to the environment surrounding the material and the behavior is unique and independent to each material. The development of testing procedures to evaluate a material's behavior with different environmental exposures is a critical need. In some ca… more
Date: December 13, 2010
Creator: James, C.; Cortes-Concepcion, J.; Anton, D. & Tamburello, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Tracking the Sun III; The Installed Cost of Photovoltaics in the United States from 1998-2009

Description: Installations of solar photovoltaic (PV) systems have been growing at a rapid pace in recent years. In 2009, approximately 7,500 megawatts (MW) of PV were installed globally, up from approximately 6,000 MW in 2008, consisting primarily of grid-connected applications. With 335 MW of grid-connected PV capacity added in 2009, the United States was the world's fourth largest PV market in 2009, behind Germany, Italy, and Japan. The market for PV in the United States is driven by national, state, and… more
Date: December 13, 2010
Creator: Barbose, Galen; Darghouth, Naim & Wiser, Ryan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Aerodynamic Design Criteria for Class 8 Heavy Vehicles Trailer Base Devices to Attain Optimum Performance

Description: Lawrence Livermore National Laboratory (LLNL) as part of its Department of Energy (DOE), Energy Efficiency and Renewable Energy (EERE), and Vehicle Technologies Program (VTP) effort has investigated class 8 tractor-trailer aerodynamics for many years. This effort has identified many drag producing flow structures around the heavy vehicles and also has designed and tested many new active and passive drag reduction techniques and concepts for significant on the road fuel economy improvements. As … more
Date: December 13, 2010
Creator: Salari, K & Ortega, J
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Innovations in Nuclear Infrastructure and Education

Description: The decision to implement the Innovation in Nuclear Infrastructure and Engineering Program (INIE) was an important first step towards ensuring that the United States preserves its worldwide leadership role in the field of nuclear science and engineering. Prior to INIE, university nuclear science and engineering programs were waning, undergraduate student enrollment was down, university research reactors were being shut down, while others faced the real possibility of closure. For too long, cutt… more
Date: December 13, 2010
Creator: Bernard, John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Simulation of e-cloud driven instability and its attenuation using a simulated feedback system in the CERN SPS

Description: Electron clouds have been shown to trigger fast growing instabilities on proton beams circulating in the SPS, and a feedback system to control the single-bunch instabilities is under active development. We present the latest improvements to the WARP-POSINST simulation framework and feedback model, and its application to the self-consistent simulations of two consecutive bunches interacting with an electron cloud in the SPS. Simulations using an idealized feedback system exhibit adequate mitigat… more
Date: December 13, 2010
Creator: Vay, J. L. & Furman, M. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

First Measurements and Results With a Stretched Wire Test Setup

Description: The LINAC Coherent Light Source [LCLS] is a free electron laser, designed to produce high brilliant X-ray beams using Self Amplified Spontaneous Emission [SASE]. Due to the physics of SASE, the electron beam has to be held very precisely on the same trajectory as the X-ray light beam generated by the undulator magnets. To optimize the SASE output, trajectory deviations between both beams have to be minimized to a few micrometers along the entire undulator section and held stable over the time p… more
Date: December 13, 2010
Creator: Peters, Franz
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Quark mass variation constraints from Big Bang nucleosynthesis

Description: We study the impact on the primordial abundances of light elements created of a variation of the quark masses at the time of Big Bang nucleosynthesis (BBN). In order to navigate through the particle and nuclear physics required to connect quark masses to binding energies and reaction rates in a model-independent way we use lattice QCD data and an hierarchy of effective field theories. We find that the measured {sup 4}He abundances put a bound of {delta}-1% {approx}< m{sub q}/m{sub 1} {approx… more
Date: December 13, 2010
Creator: Bedaque, P.; Luu, T. & Platter, L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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