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Drug Control: Initial Review of the National Strategy and Drug Abuse Prevention and Treatment Programs

Description: Correspondence issued by the Government Accountability Office with an abstract that begins "To implement the 2010 National Drug Control Strategy, ONDCP obtained input from drug control stakeholders to help ensure that they shared responsibility for implementation, established a new process to determine progress made, and reported that most action items in the Strategy were on track or complete as of November 2011. ONDCP officials stated that they developed the 2010 Strategy’s seven objectives—f… more
Date: July 6, 2012
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

U.S. Merchant Marine Academy: Additional Actions Needed to Establish Effective Internal Control

Description: A letter report issued by the Government Accountability Office with an abstract that begins "The U.S. Merchant Marine Academy (Academy) has made progress in improving its internal control since GAO’s August 2009 report, but has not yet fully addressed one key recommendation related to fundamental weaknesses in its overall internal control system. GAO found that while the Academy had appointed an Internal Control Officer responsible for coordinating reviews of internal controls, it had not yet e… more
Date: July 6, 2012
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Conventional Prompt Global Strike and Long-Range Ballistic Missiles: Background and Issues

Description: Prompt global strike (PGS) would allow the United States to strike targets anywhere on Earth with conventional weapons in as little as an hour. This report looks at some concerns that Congress has shown for the PGS program, including the Department of Defenses' rationale for the mission, the Air Force's ability to set up the system in a timely manner, and how the new START Treaty between the US and Russia will affect the system.
Date: July 6, 2012
Creator: Woolf, Amy F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Trafficking in Persons: International Dimensions and Foreign Policy Issues for Congress

Description: This report explores current foreign policy issues confronting U.S. efforts to combat human trafficking, the interrelationship among existing polices, and the historical and current role of Congress in such efforts. Given recent challenges in balancing budget priorities, the 112th Congress may choose to consider certain aspects of this issue further, including the effectiveness of international anti-trafficking projects, interagency coordination mechanisms, and the monitoring and enforcement of… more
Date: July 6, 2012
Creator: Wyler, Liana Sun
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Monetary Policy and the Federal Reserve: Current Policy and Conditions

Description: This report discusses how the Federal Reserve (Fed) handles monetary policy, including background information about the execution of monetary policy, the recent and current stance of monetary policy, and current legislation and Congressional oversight that would affect the Fed's practices.
Date: July 6, 2012
Creator: Labonte, Marc
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Salt Dependence of the Radius of Gyration and Flexibility of Single-stranded DNA in Solution probed by Small-angle X-ray Scattering

Description: Short single-stranded nucleic acids are ubiquitous in biological processes and understanding their physical properties provides insights to nucleic acid folding and dynamics. We used small angle x-ray scattering to study 8-100 residue homopolymeric single-stranded DNAs in solution, without external forces or labeling probes. Poly-T's structural ensemble changes with increasing ionic strength in a manner consistent with a polyelectrolyte persistence length theory that accounts for molecular flex… more
Date: July 6, 2012
Creator: Sim, Adelene Y.L.; Lipfert, Jan; Herschlag, Daniel & Doniach, Sebastian
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Review of Prior U.S. Attribute Measurement Systems

Description: Attribute Measurement Systems have been developed and demonstrated several times in the United States over the last decade or so; under the Trilateral Initiative (1996-2002), FMTTD (Fissile Material Transparency Technology Demonstration, 2000), and NG-AMS (Next Generation Attribute Measurement System, 2005-2008). Each Attribute Measurement System has contributed to the growing body of knowledge regarding the use of such systems in warhead dismantlement and other Arms Control scenarios. The Tril… more
Date: July 6, 2012
Creator: White, G K
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Booster Synchrotron RF System Upgrade for SPEAR3

Description: Recent progress at the SPEAR3 includes the increase in stored current from 100 mA to 200 mA and top-off injection to allow beamlines to stay open during injection. Presently the booster injects 3.0 GeV beam to SPEAR3 three times a day. The stored beam decays to about 150 mA between the injections. The growing user demands are to increase the stored current to the design value of 500 mA, and to maintain it at a constant value within a percent or so. To achieve this goal the booster must inject o… more
Date: July 6, 2012
Creator: Park, Sanghyun & Corbett, Jeff
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Design of Accelerator Online Simulator Server Using Structured Data

Description: Model based control plays an important role for a modern accelerator during beam commissioning, beam study, and even daily operation. With a realistic model, beam behaviour can be predicted and therefore effectively controlled. The approach used by most current high level application environments is to use a built-in simulation engine and feed a realistic model into that simulation engine. Instead of this traditional monolithic structure, a new approach using a client-server architecture is und… more
Date: July 6, 2012
Creator: Shen, Guobao; /Brookhaven; Chu, Chungming; /SLAC; Wu, Juhao; /SLAC et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Bunch Length Measurements With Laser/SR Cross-Correlation

Description: By operating SPEAR3 in low-{alpha} mode the storage ring can generate synchrotron radiation pulses of order 1ps. Applications include pump-probe x-ray science and the production of THz radiation in the CSR regime. Measurements of the bunch length are difficult, however, because the light intensity is low and streak cameras typically provide resolution of only a few ps. Tests are now underway to resolve the short bunch length using cross-correlation between a 60-fs Ti:Sapphire laser and the visi… more
Date: July 6, 2012
Creator: Miller, Timothy; Daranciang, Dan; Lindenberg, Aaron; Corbett, Jeff; Fisher, Alan; Goodfellow, John et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

LLRF System Upgrade for the SLAC Linac

Description: The Linac Coherent Light Source (LCLS) at SLAC is in full user operation and has met the stability goals for stable lasing. The 250pC bunch can be compressed to below 100fS before passing through an undulator. In a new mode of operation a 20pC bunch is compressed to about 10fS. Experimenters are regularly using this shorter X-ray pulse and getting pristine data. The 10fS bunch has timing jitter on the order of 100fS. Physicists are requesting that the RF system achieve better stability to reduc… more
Date: July 6, 2012
Creator: Hong, Bo; Akre, Ron & Pacak, Vojtech
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Nucleation and Precipitation Processes in the Vadose Zone during Contaminant Transport: Final Technical Report

Description: The report describes results of experiments to synthesize and characterize uranium(VI)-silicates from solutions containing dissolved U(VI), Si, Na, and nitrate as a function of solution pH and Si:U ratio under ambient conditions. Solids characterization was accomplished by X-ray diffraction, attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), and high-energy X-ray scattering (HEXS) analysis. The purpose was to develop a framework for describing the formation of U(VI… more
Date: July 6, 2012
Creator: Nagy, Kathryn L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Polarimetery for SuperB

Description: We provide an overview description of a Compton polarimeter for measuring electron beam polarization near the IR in the Low Energy Ring of SuperB. The polarimeter is designed to achieve 1.0% accuracy. A scheme for measuring the electron beam polarization at SuperB near the IR has been described. The Compton polarimeter has been designed to fit into the existing lattice of the SuperB ring and results in a Compton IP measuring the polarization located where the beam is almost longitudinal with op… more
Date: July 6, 2012
Creator: Sullivan, Michael; /SLAC; Field, R.; /SLAC; Moffeit, Kenneth; /SLAC et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Updated Greenhouse Gas and Criteria Air Pollutant Emission Factors and Their Probability Distribution Functions for Electricity Generating Units

Description: Greenhouse gas (CO{sub 2}, CH{sub 4} and N{sub 2}O, hereinafter GHG) and criteria air pollutant (CO, NO{sub x}, VOC, PM{sub 10}, PM{sub 2.5} and SO{sub x}, hereinafter CAP) emission factors for various types of power plants burning various fuels with different technologies are important upstream parameters for estimating life-cycle emissions associated with alternative vehicle/fuel systems in the transportation sector, especially electric vehicles. The emission factors are typically expressed i… more
Date: July 6, 2012
Creator: Cai, Hong; Wang, M.; Elgowainy, A. & Han, J. (Energy Systems)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Managing Aging Effects on Dry Cask Storage Systems for Extended Long-Term Storage and Transportation of Used Fuel - Rev. 0

Description: The cancellation of the Yucca Mountain repository program in the United States raises the prospect of extended long-term storage (i.e., >120 years) and deferred transportation of used fuel at operating and decommissioned nuclear power plant sites. Under U.S. federal regulations contained in Title 10 of the Code of Federal Regulations (CFR) 72.42, the initial license term for an Independent Spent Fuel Storage Installation (ISFSI) must not exceed 40 years from the date of issuance. Licenses ma… more
Date: July 6, 2012
Creator: Chopra, O. K.; Diercks, D.; Fabian, R.; Ma, D.; Shah, V.; Tam, S. W. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Feedback Requirements for SASE-FELs

Description: The operation of a Self Amplified Spontaneous Emission (SASE) Free Electron Lasers (FEL) at soft and hard X-ray wavelengths driven by a high brightness electron beam imposes strong requirements on the stability of the accelerator and feedback systems are necessary to both guarantee saturation of the SASE process as well as a stable photon beam for user experiments. Diagnostics for the relevant transverse and longitudinal beam parameters are presented and various examples of feedback systems for… more
Date: July 6, 2012
Creator: Loos, Henrik
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

CSR in the SuperKEKB Damping Ring

Description: Coherent synchrotron radiation (CSR) is generated when a bunched beam traverses a dipole magnet or a wiggler/undulator. It can degrade the beam quality in both storage rings and linacs through enhancing the beam energy spread and lengthening the bunch length, even cause single-bunch microwave instabilities. Using several methods, CSR impedances in the positron damping ring (DR) of the SuperKEKB which is under design were calculated. From the impedances due to CSR, resistive wall and various vac… more
Date: July 6, 2012
Creator: Zhou, Demin; Abe, Tetsuo; Ikeda, Hitomi; Kikuchi, Mitsuo; Ohmi, Kazuhito; Oide, Katsunobu et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Ensemble Single Column Modeling in the Tropics - Derivation of observed forcing data sets, estimation of observation uncertainty and application to parametrization improvements

Description: The project was carried out in 2 distinct phases. In the first phase we established the general validity of using an ensemble approach to Single Column Modeling (SCM) using the Manus and Nauru sites. In the second phase we derived and applied an ensemble forcing derivation technique to observations. First we derived an ensemble forcing estimate for the TWP-ICE experiment and then by extended the method to provide three wet seasons of “continuous ensemble forcing” for the Darwin site. The ma… more
Date: July 6, 2012
Creator: Jakob, Christian
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Optimization of the CLIC Baseline Collimation System

Description: Important efforts have recently been dedicated to the improvement of the design of the baseline collimation system of the Compact Linear Collider (CLIC). Different aspects of the design have been optimized: the transverse collimation depths have been recalculated in order to reduce the collimator wakefield effects while maintaining a good efficiency in cleaning the undesired beam halo; the geometric design of the spoilers have also been reviewed to minimize wakefields; in addition, the optics d… more
Date: July 6, 2012
Creator: Resta-Lopez, Javier; /Oxford U., JAI; Angal-Kalinin, Deepa; /Daresbury; Fernandez-Hernando, Juan; /Daresbury et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Simulation of E-Cloud Driven Instability And Its Attenuation Using a 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 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.
Date: July 6, 2012
Creator: Vay, Jean-Luc; Byrd, John; Furman, Miguel; Penn, Gregory; Secondo, Raffaello; Fox, John et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A New Interaction Region Design for the Super-B Factory

Description: A final focus magnet design that uses super-ferric magnets is introduced for the SuperB interaction region. The baseline design has air-core super-conducting quadrupoles. This idea instead uses super-conducting wire in an iron yoke. The iron is in the shape of a Panofsky quadrupole and this allows two quadrupoles to be side-by-side with no intervening iron as long as the gradients of the two quads are equal. This feature allows us to move in as close as possible to the collision point and minim… more
Date: July 6, 2012
Creator: Sullivan, Michael; Bertsche, Kirk; Bettoni, Simona; Paoloni, Eugenio; Raimondi, Pantaleo & Vobly, Pavel
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Operational Experiences Tuning the ATF2 Final Focus Optics Towards Obtaining a 37nm Electron Beam IP Spot Size

Description: The primary aim of the ATF2 research accelerator is to test a scaled version of the final focus optics planned for use in next-generation linear lepton colliders. ATF2 consists of a 1.3 GeV linac, damping ring providing low-emittance electron beams (< 12pm in the vertical plane), extraction line and final focus optics. The design details of the final focus optics and implementation at ATF2 are presented elsewhere. The ATF2 accelerator is currently being commissioned, with a staged approach t… more
Date: July 6, 2012
Creator: White, Glen; Seryi, Andrei; Woodley, Mark; Bai, Sha; Bambade, Philip; Renier, Yves et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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