A 4 to 0.1 nm FEL Based on the SLAC Linac (open access)

A 4 to 0.1 nm FEL Based on the SLAC Linac

The author show that using existing electron gun technology and a high energy linac like the one at SLAC, it is possible to build a Free Electron Laser operating around the 4 nm water window. A modest improvement in the gun performance would further allow to extend the FEL to the 0.1 nm region. Such a system would produce radiation with a brightness many order of magnitude above that of any synchrotron radiation source, existing or under construction, with laser power in the multigawatt region and subpicosecond pulse length.
Date: June 5, 2012
Creator: Pellegrini, C.
Object Type: Article
System: The UNT Digital Library
10 CFR 850 Implementation of Requirements (open access)

10 CFR 850 Implementation of Requirements

10 CFR 850 defines a contractor as any entity, including affiliated entities, such as a parent corporation, under contract with DOE, including a subcontractor at any tier, with responsibility for performing work at a DOE site in furtherance of a DOE mission. The Chronic Beryllium Disease Prevention Program (CBDPP) applies to beryllium-related activities that are performed at the Lawrence Livermore National Laboratory (LLNL). The CBDPP or Beryllium Safety Program is integrated into the LLNL Worker Safety and Health Program and, thus, implementation documents and responsibilities are integrated in various documents and organizational structures. Program development and management of the CBDPP is delegated to the Environment, Safety and Health (ES&H) Directorate, Worker Safety and Health Functional Area. As per 10 CFR 850, Lawrence Livermore National Security, LLC (LLNS) periodically submits a CBDPP to the National Nuclear Security Administration/Livermore Site Office (NNSA/LSO). The requirements of this plan are communicated to LLNS workers through ES&H Manual Document 14.4, 'Working Safely with Beryllium.' 10 CFR 850 is implemented by the LLNL CBDPP, which integrates the safety and health standards required by the regulation, components of the LLNL Integrated Safety Management System (ISMS), and incorporates other components of the LLNL ES&H Program. As described in …
Date: January 5, 2012
Creator: Lee, S.
Object Type: Report
System: The UNT Digital Library
2012-2013 Presidential Election Period: National Security Considerations and Options (open access)

2012-2013 Presidential Election Period: National Security Considerations and Options

This report discusses historical national security-related presidential transition activities, provides a representative sampling of national security issues a new Administration may encounter, and offers considerations and options relevant to each of the five phases of the presidential election period. Each phase has distinct challenges and opportunities for the incoming Administration, the outgoing Administration, and Congress. This report is intended to provide a framework for national security considerations during the current election period and will be updated to reflect the election outcome.
Date: October 5, 2012
Creator: Rollins, John
Object Type: Report
System: The UNT Digital Library
Ab-initio calculation of optical properties of wurtzitic In_x Ga_1x N and In_x Al_1x N alloys including excitonic effects (open access)

Ab-initio calculation of optical properties of wurtzitic In_x Ga_1x N and In_x Al_1x N alloys including excitonic effects

None
Date: September 5, 2012
Creator: de Carvalho, L C; Schleife, A; Furthmueller, J & Bechstedt, F
Object Type: Article
System: The UNT Digital Library
Ability to Repay, Risk-Retention Standards, and Mortgage Credit Access (open access)

Ability to Repay, Risk-Retention Standards, and Mortgage Credit Access

This report examines the developments associated with the implementation of mortgage lending reforms. The report begins with a summary of proposed ability to repay and risk-retention standards. Next, the report describes risky underwriting and financing practices that occurred prior to the mortgage crisis, followed by a discussion of how access to mortgage credit might be affected.
Date: June 5, 2012
Creator: Getter, Darryl E.
Object Type: Report
System: The UNT Digital Library
ADAPTING A CERTIFIED SHIPPING PACKAGE FOR STORAGE APPLICATIONS (open access)

ADAPTING A CERTIFIED SHIPPING PACKAGE FOR STORAGE APPLICATIONS

For years shipping packages have been used to store radioactive materials at many DOE sites. Recently, the K-Area Material Storage facility at the Savannah River Site became interested in and approved the Model 9977 Shipping Package for use as a storage package. In order to allow the 9977 to be stored in the facility, there were a number of evaluations and modifications that were required. There were additional suggested modifications to improve the performance of the package as a storage container that were discussed but not incorporated in the design that is currently in use. This paper will discuss the design being utilized for shipping and storage, suggested modifications that have improved the storage configuration but were not used, as well as modifications that have merit for future adaptations for both the 9977 and for other shipping packages to be used as storage packages.
Date: June 5, 2012
Creator: Loftin, B. & Abramczyk, G.
Object Type: Article
System: The UNT Digital Library
Advances in X-Band TW Accelerator Structures Operating in the 100 MV/M Regime (open access)

Advances in X-Band TW Accelerator Structures Operating in the 100 MV/M Regime

A CERN-SLAC-KEK collaboration on high gradient X-band accelerator structure development for CLIC has been ongoing for three years. The major outcome has been the demonstration of stable 100 MV/m gradient operation of a number of CLIC prototype structures. These structures were fabricated using the technology developed from 1994 to 2004 for the GLC/NLC linear collider initiative. One of the goals has been to refine the essential parameters and fabrication procedures needed to realize such a high gradient routinely. Another goal has been to develop structures with stronger dipole mode damping than those for GLC/NLC. The latter requires that the surface temperature rise during the pulse be higher, which may increase the breakdown rate. One structure with heavy damping has been RF processed and another is nearly finished. The breakdown rates of these structures were found to be higher by two orders of magnitude compared to those with equivalent acceleration mode parameters but without the damping features. This paper presents these results together with some of the earlier results from non-damped structures.
Date: July 5, 2012
Creator: Higo, Toshiyasu; Higashi, Yasuo; Matsumoto, Shuji; Yokoyama, Kazue; Adolphsen, Chris; Dolgashev, Valery et al.
Object Type: Article
System: The UNT Digital Library
Afghanistan: Politics, Elections, and Government Performance (open access)

Afghanistan: Politics, Elections, and Government Performance

This report discusses the current political state of Afghanistan, as well as the Afghan government. This report also discusses Afghanistan's relationship with the United States, particularly U.S. efforts to urge President Hamid Karzai, to address corruption within the Afghan government. The report also includes discussion of election fraud and corruption in Afghanistan.
Date: June 5, 2012
Creator: Katzman, Kenneth
Object Type: Report
System: The UNT Digital Library
Afghanistan: Politics, Elections, and Government Performance (open access)

Afghanistan: Politics, Elections, and Government Performance

This report discusses the current political state of Afghanistan, as well as the Afghan government. This report also discusses Afghanistan's relationship with the United States, particularly U.S. efforts to urge President Hamid Karzai, to address corruption within the Afghan government. The report also includes discussion of election fraud and corruption in Afghanistan.
Date: June 5, 2012
Creator: Katzman, Kenneth
Object Type: Report
System: The UNT Digital Library
Afghanistan: Politics, Elections, and Government Performance (open access)

Afghanistan: Politics, Elections, and Government Performance

This report discusses the current political state of Afghanistan, as well as the Afghan government. This report also discusses Afghanistan's relationship with the United States, particularly U.S. efforts to urge President Hamid Karzai, to address corruption within the Afghan government. The report also includes discussion of election fraud and corruption in Afghanistan.
Date: June 5, 2012
Creator: Katzman, Kenneth
Object Type: Report
System: The UNT Digital Library
Afghanistan: Politics, Elections, and Government Performance (open access)

Afghanistan: Politics, Elections, and Government Performance

This report discusses the current political state of Afghanistan, as well as the Afghan government. This report also discusses Afghanistan's relationship with the United States, particularly U.S. efforts to urge President Hamid Karzai, to address corruption within the Afghan government. The report also includes discussion of election fraud and corruption in Afghanistan.
Date: June 5, 2012
Creator: Katzman, Kenneth
Object Type: Report
System: The UNT Digital Library
Air Quality: EPA's 2012 Proposed Changes to the Particulate Matter (PM) Standard (open access)

Air Quality: EPA's 2012 Proposed Changes to the Particulate Matter (PM) Standard

This report summarizes the Environmental Protection Agency's (EPA's) June 2012 proposed changes to the particulate matter (PM) National Ambient Air Quality Standard (NAAQS) and includes comparisons with previous (1997) and current (2006) promulgated and proposed standards. Key actions leading up to the June 2012 proposal, and potential issues and concerns associated with the proposal to strengthen the PM2.5 annual standard, are also highlighted.
Date: September 5, 2012
Creator: Esworthy, Robert
Object Type: Report
System: The UNT Digital Library
Analysis of Deformation Twinning in Tantalum Single Crystals Under Shock Loading Conditions (open access)

Analysis of Deformation Twinning in Tantalum Single Crystals Under Shock Loading Conditions

None
Date: December 5, 2012
Creator: Florando, J. N.; Barton, N. R.; El-Dasher, B.; McNaney, J. M. & Kumar, M.
Object Type: Article
System: The UNT Digital Library
Analysis on linac quadrupole misalignment in FACET commissioning 2012 (open access)

Analysis on linac quadrupole misalignment in FACET commissioning 2012

In this note, the analysis on linac quadrupole misalignment is presented for the FACET linac section LI05-09 plus LI11-19. The effectiveness of the beam-based alignment technique is preliminarily confirmed by the measurement. Beam-based alignment technique was adopted at SLAC linac since SLC time. Here the beam-based alignment algorithms are further developed and applied in the FACET commissioning during 2012 run.
Date: July 5, 2012
Creator: Sun, Yipeng
Object Type: Report
System: The UNT Digital Library
Appraised Values on Tax Returns: Burdens on Taxpayers Could Be Reduced and Selected Practices Improved (open access)

Appraised Values on Tax Returns: Burdens on Taxpayers Could Be Reduced and Selected Practices Improved

A letter report issued by the Government Accountability Office with an abstract that begins "AppraisersÂ’ most prominent role relative to the three types of tax returns GAO studied is in the valuation of estates. In the most recent years for which GAO had data, appraisers were likely involved in the valuation of property worth from $75 billion to $167 billion reported on estate tax returns in 2009. In contrast, less than $17 billion worth of gifts in 2009 and less than $10 billion in noncash contributions in 2008 likely involved an appraiser. Gift tax returns that likely used appraisers had higher audit rates than gift returns that were unlikely to have appraisers. The use of appraisers was not associated with higher audit rates for estate tax returns and individual returns with noncash contributions."
Date: June 5, 2012
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
The Army Corps of Engineers’ Nationwide Permits Program: Issues and Regulatory Developments (open access)

The Army Corps of Engineers’ Nationwide Permits Program: Issues and Regulatory Developments

This report contains the issues and regulatory developments in the army corps engineers' nationwide permits program.
Date: April 5, 2012
Creator: Copeland, Claudia
Object Type: Report
System: The UNT Digital Library
Bahrain: Reform, Security, and U.S. Policy (open access)

Bahrain: Reform, Security, and U.S. Policy

This report discusses the current state of Bahrain, which has undergone substantial political reforms since the late 1990s, but which still suffers from tension between the Shiite majority and the Sunni-led government. This report focuses particularly on Bahrain's relationship with the United States and with regional issues.
Date: October 5, 2012
Creator: Katzman, Kenneth
Object Type: Report
System: The UNT Digital Library
The BBSOLVE Users Manual Version 1.0 (open access)

The BBSOLVE Users Manual Version 1.0

N/A
Date: December 5, 2012
Creator: M., Blaskiewicz
Object Type: Report
System: The UNT Digital Library
Beyond DVFS: A First Look at Performance Under a Hardware-Enforced Power Bound (open access)

Beyond DVFS: A First Look at Performance Under a Hardware-Enforced Power Bound

None
Date: March 5, 2012
Creator: Rountree, B. R.; Ahn, D. H.; de Supinski, B. R.; Lowenthal, D. K. & Schulz, M.
Object Type: Article
System: The UNT Digital Library
BOUT simulations of drift resistive ballooning L-mode turbulence in the edge of the DIII-D tokamak (open access)

BOUT simulations of drift resistive ballooning L-mode turbulence in the edge of the DIII-D tokamak

None
Date: November 5, 2012
Creator: Cohen, B. I.; Umansky, M. V.; Nevins, W. M.; Makowski, M.; Boedo, J.; Rudakov, D. et al.
Object Type: Article
System: The UNT Digital Library
Brute Force Modeling of the Kessler Syndrome (open access)

Brute Force Modeling of the Kessler Syndrome

None
Date: September 5, 2012
Creator: Nikolaev, S.; Phillion, D.; Springer, H. K.; deVries, W.; Jiang, M.; Pertica, A. et al.
Object Type: Article
System: The UNT Digital Library
Burma's Political Prisoners and U.S. Sanctions (open access)

Burma's Political Prisoners and U.S. Sanctions

This report discusses the current issues in Burma (Myanmar) in regards to political prisoners and the resulting U.S. sanctions against the nation. It includes an introduction and definitions; information about current estimates of prisoners and prisoner releases; the relation of political prisoners, parliamentary elections and national reconciliation; and U.S. sanctions and U.S. efforts regarding political prisoners, as well as relevant issues for Congress to consider.
Date: July 5, 2012
Creator: Martin, Michael F.
Object Type: Report
System: The UNT Digital Library
Campaign Finance Guide for Political Parties (open access)

Campaign Finance Guide for Political Parties

Short guide with rules on acceptance and filing of financial donations as well as rules for candidates of different political openings.
Date: July 5, 2012
Creator: Texas Ethics Commission
Object Type: Pamphlet
System: The Portal to Texas History
Canada-U.S. Relations (open access)

Canada-U.S. Relations

This report begins with a short overview of Canada's political scene, economic conditions, security, foreign policy, and discusses Canada - U.S relations.
Date: April 5, 2012
Creator: Ek, Carl & Fergusson, Ian F.
Object Type: Report
System: The UNT Digital Library