The United Nations Convention on the Rights of the Child: Background and Policy Issues (open access)

The United Nations Convention on the Rights of the Child: Background and Policy Issues

This report provides an overview of the United Nations (U.N.) Convention on the Rights of the Child's (CRC's) background and structure and examines evolving U.S. policy toward the CRC, including past and current Administration positions and congressional perspectives. It also highlights issues for the 112th Congress, including the CRC's possible impact on federal and state laws, U.S. sovereignty, parental rights, and U.S. family planning and abortion policy. In addition, the report addresses the effectiveness of CRC in protecting the rights of children internationally and its potential use as an instrument of U.S. foreign policy.
Date: July 2, 2012
Creator: Blanchfield, Luisa
Object Type: Report
System: The UNT Digital Library
Linear Collider Test Facility: Twiss Parameter Analysis at the IP/Post-IP Location of the ATF2 Beam Line (open access)

Linear Collider Test Facility: Twiss Parameter Analysis at the IP/Post-IP Location of the ATF2 Beam Line

At the first stage of the ATF2 beam tuning, vertical beam size is usually bigger than 3 {micro}m at the IP. Beam waist measurements using wire scanners and a laser wire are usually performed to check the initial matching of the beam through to the IP. These measurements are described in this paper for the optics currently used ({beta}{sub x} = 4cm and {beta}{sub y} = 1mm). Software implemented in the control room to automate these measurements with integrated analysis is also described. Measurements showed that {beta} functions and emittances were within errors of measurements when no rematching and coupling corrections were done. However, it was observed that the waist in the horizontal (X) and vertical (Y) plane was abnormally shifted and simulations were performed to try to understand these shifts. They also showed that multiknobs are needed in the current optics to correct simultaneously {alpha}{sub x}, {alpha}{sub y} and the horizontal dispersion (D{sub x}). Such multiknobs were found and their linearity and orthogonality were successfully checked using MAD optics code. The software for these multiknobs was implemented in the control room and waist scan measurements using the {alpha}{sub y} knob were successfully performed.
Date: July 2, 2012
Creator: Bolzon, Benoit; Jeremie, Andrea; Bai, Sha; Bambade, Philip & White, Glen
Object Type: Article
System: The UNT Digital Library
Compact Couplers for Photonic Crystal Laser-Driven Accelerator Structures (open access)

Compact Couplers for Photonic Crystal Laser-Driven Accelerator Structures

Photonic crystal waveguides are promising candidates for laser-driven accelerator structures because of their ability to confine a speed-of-light mode in an all-dielectric structure. Because of the difference between the group velocity of the waveguide mode and the particle bunch velocity, fields must be coupled into the accelerating waveguide at frequent intervals. Therefore efficient, compact couplers are critical to overall accelerator efficiency. We present designs and simulations of high-efficiency coupling to the accelerating mode in a three-dimensional photonic crystal waveguide from a waveguide adjoining it at 90{sup o}. We discuss details of the computation and the resulting transmission. We include some background on the accelerator structure and photonic crystal-based optical acceleration in general.
Date: July 2, 2012
Creator: Cowan, Benjamin; Lin, M. C.; Schwartz, Brian; Byer, Robert; McGuinness, Christopher; /Stanford U., Phys. Dept. et al.
Object Type: Article
System: The UNT Digital Library
TECHNICAL BASIS FOR DOE STANDARD 3013 EQUIVALENCY SUPPORTING REDUCED TEMPERATURE STABILIZATION OF OXALATE-DERIVED PLUTONIUM OXIDE PRODUCED BY THE HB-LINE FACILITY AT SAVANNAH RIVER SITE (open access)

TECHNICAL BASIS FOR DOE STANDARD 3013 EQUIVALENCY SUPPORTING REDUCED TEMPERATURE STABILIZATION OF OXALATE-DERIVED PLUTONIUM OXIDE PRODUCED BY THE HB-LINE FACILITY AT SAVANNAH RIVER SITE

The HB-Line (HBL) facility at the Savannah River Site (SRS) is designed to produce high-purity plutonium dioxide (PuO{sub 2}) which is suitable for future use in production of Mixed Oxide (MOX) fuel. The MOX Fuel Fabrication Facility (MFFF) requires PuO{sub 2} feed to be packaged per the U.S. Department of Energy (DOE) Standard 3013 (DOE-STD-3013) to comply with the facility's safety basis. The stabilization conditions imposed by DOE-STD-3013 for PuO{sub 2} (i.e., 950 C for 2 hours) preclude use of the HBL PuO{sub 2} in direct fuel fabrication and reduce the value of the HBL product as MFFF feedstock. Consequently, HBL initiated a technical evaluation to define acceptable operating conditions for production of high-purity PuO{sub 2} that fulfills the DOE-STD-3013 criteria for safe storage. The purpose of this document is to demonstrate that within the defined operating conditions, the HBL process will be equivalent for meeting the requirements of the DOE-STD-3013 stabilization process for plutonium-bearing materials from the DOE complex. The proposed 3013 equivalency reduces the prescribed stabilization temperature for high-purity PuO{sub 2} from oxalate precipitation processes from 950 C to 640 C and places a limit of 60% on the relative humidity (RH) at the lowest material temperature. The …
Date: July 2, 2012
Creator: Duffey, J.; Livingston, R.; Berg, J. & Veirs, D.
Object Type: Report
System: The UNT Digital Library
Lattice Calibration with Turn-By-Turn BPM Data (open access)

Lattice Calibration with Turn-By-Turn BPM Data

Turn-by-turn beam position monitor (BPM) data from multiple BPMs are fitted with a tracking code to calibrate magnet strengths in a manner similar to the well known LOCO code. Simulation shows that this turn-by-turn method can be a quick and efficient way for optics calibration. The method is applicable to both linacs and ring accelerators. Experimental results for a section of the SPEAR3 ring is also shown.
Date: July 2, 2012
Creator: Huang, Xiaobiao & Sebek, James
Object Type: Article
System: The UNT Digital Library
Performance Analysis: Issues Tracking System Data through September 2011 (open access)

Performance Analysis: Issues Tracking System Data through September 2011

None
Date: July 2, 2012
Creator: Kerr, C E; Holman, G & McTyer, N
Object Type: Report
System: The UNT Digital Library
An Undulator Based Polarized Positron Source for CLIC (open access)

An Undulator Based Polarized Positron Source for CLIC

A viable positron source scheme is proposed that uses circularly polarized gamma rays generated from the main 250 GeV electron beam. The beam passes through a helical superconducting undulator with a magnetic field of {approx} 1 Tesla and a period of 1.15 cm. The gamma-rays produced in the undulator in the energy range between {approx} 3 MeV - 100 MeV will be directed to a titanium target and produce polarized positrons. The positrons are then captured, accelerated and transported to a Pre-Damping Ring (PDR). Detailed parameter studies of this scheme including positron yield, and undulator parameter dependence are presented. Effects on the 250 GeV CLIC main beam, including emittance growth and energy loss from the beam passing through the undulator are also discussed.
Date: July 2, 2012
Creator: Liu, Wanming; Gai, Wei; Rinolfi, Louis & Sheppard, John
Object Type: Article
System: The UNT Digital Library
Climate Change and Existing Law: A Survey of Legal Issues Past, Present, and Future (open access)

Climate Change and Existing Law: A Survey of Legal Issues Past, Present, and Future

This report surveys existing law for legal issues that have arisen, or may arise in the future, on account of climate change and government responses thereto.
Date: July 2, 2012
Creator: Meltz, Robert
Object Type: Report
System: The UNT Digital Library
Individual Mandate and Related Information Requirements under ACA (open access)

Individual Mandate and Related Information Requirements under ACA

None
Date: July 2, 2012
Creator: Mulvey, Janemarie & Chaikind, Hinda
Object Type: Report
System: The UNT Digital Library
Navy Aegis Ballistic Missile Defense (BMD) Program: Background and Issues for Congress (open access)

Navy Aegis Ballistic Missile Defense (BMD) Program: Background and Issues for Congress

This report discusses the funding for the growth of the Aegis ballistic missile defense (BMD) program. The Aegis BMD program, which is carried out by the Missile Defense Agency (MDA) and the Navy, gives Navy Aegis cruisers and destroyers a capability for conducting BMD operations.
Date: July 2, 2012
Creator: O'Rourke, Ronald
Object Type: Report
System: The UNT Digital Library
Navy Aegis Ballistic Missile Defense (BMD) Program: Background and Issues for Congress (open access)

Navy Aegis Ballistic Missile Defense (BMD) Program: Background and Issues for Congress

This report provides background information and issues for Congress on the Aegis ballistic missile defense (BMD) program, which is carried out by the Missile Defense Agency (MDA) and the Navy, and gives Navy Aegis cruisers and destroyers a capability for conducting BMD operations Issues for Congress concerning the Aegis BMD program include demands for BMD capable Aegis ships, demands for Aegis ships in general, the U.S. economic impact of shifting four Aegis ships to Rota, Spain, U.S. vs. European naval contributions to European BMD, the capability of the SM-3 Block IIB Aegis BMD interceptor, and technical risk in the Aegis program.
Date: July 2, 2012
Creator: O'Rourke, Ronald
Object Type: Report
System: The UNT Digital Library
Upgrade of the Drive LINAC for the AWA Facility Dielectric Two-Beam Accelerator (open access)

Upgrade of the Drive LINAC for the AWA Facility Dielectric Two-Beam Accelerator

We report on the design of a seven-cell, standing-wave, 1.3-GHz rf cavity and the associated beam dynamics studies for the upgrade of the drive beamline LINAC at the Argonne Wakefield Accelerator (AWA) facility. The LINAC design is a compromise between single-bunch operation (100 nC {at} 75 MeV) and minimization of the energy droop along the bunch train during bunch-train operation. The 1.3-GHz drive bunch-train target parameters are 75 MeV, 10-20-ns macropulse duration, and 16 x 60 nC microbunches; this is equivalent to a macropulse current and beam power of 80 A and 6 GW, respectively. Each LINAC structure accelerates approximately 1000 nC in 10 ns by a voltage of 11 MV at an rf power of 10 MW. Due to the short bunch-train duration desired ({approx}10 ns) and the existing frequency (1.3 GHz), compensation of the energy droop along the bunch train is difficult to accomplish by means of the two standard techniques: time-domain or frequency-domain beam loading compensation. Therefore, to minimize the energy droop, our design is based on a large stored energy rf cavity. In this paper, we present our rf cavity optimization method, detailed rf cavity design, and beam dynamics studies of the drive beamline.
Date: July 2, 2012
Creator: Power, John; Conde, Manoel; Gai, Wei; Li, Zenghai & Mihalcea, Daniel
Object Type: Article
System: The UNT Digital Library
DISSOLUTION OF PLUTONIUM METAL IN 8-10 M NITRIC ACID (open access)

DISSOLUTION OF PLUTONIUM METAL IN 8-10 M NITRIC ACID

The H-Canyon facility will be used to dissolve Pu metal for subsequent purification and conversion to plutonium dioxide (PuO{sub 2}) using Phase II of HB-Line. To support the new mission, the development of a Pu metal dissolution flowsheet which utilizes concentrated (8-10 M) nitric acid (HNO{sub 3}) solutions containing potassium fluoride (KF) is required. Dissolution of Pu metal in concentrated HNO{sub 3} is desired to eliminate the need to adjust the solution acidity prior to purification by anion exchange. The preferred flowsheet would use 8-10 M HNO{sub 3}, 0.015-0.07 M KF, and 0.5-1.0 g/L Gd to dissolve the Pu up to 6.75 g/L. An alternate flowsheet would use 8-10 M HNO{sub 3}, 0.05-0.2 M KF, and 1-2 g/L B to dissolve the Pu. The targeted average Pu metal dissolution rate is 20 mg/min-cm{sup 2}, which is sufficient to dissolve a “standard” 2250-g Pu metal button in 24 h. Plutonium metal dissolution rate measurements showed that if Gd is used as the nuclear poison, the optimum dissolution conditions occur in 10 M HNO{sub 3}, 0.04-0.05 M KF, and 0.5-1.0 g/L Gd at 112 to 116 °C (boiling). These conditions will result in an estimated Pu metal dissolution rate of ~11-15 mg/min-cm{sup …
Date: July 2, 2012
Creator: Rudisill, T. S. & Pierce, R. A.
Object Type: Report
System: The UNT Digital Library
Texas Bond Review Board Strategic Plan: Fiscal Years 2013-2017 (open access)

Texas Bond Review Board Strategic Plan: Fiscal Years 2013-2017

Agency strategic plan for the Texas Bond Review Board describing the organization's planned services, activities, and other goals during fiscal years 2013 through 2017.
Date: July 2, 2012
Creator: Texas Bond Review Board
Object Type: Book
System: The Portal to Texas History
Texas Department of Agriculture Strategic Plan: Fiscal Years 2013-2017 (open access)

Texas Department of Agriculture Strategic Plan: Fiscal Years 2013-2017

Agency strategic plan for the Texas Department of Agriculture describing the organization's planned services, activities, and other goals during fiscal years 2013 through 2017.
Date: July 2, 2012
Creator: Texas. Department of Agriculture.
Object Type: Report
System: The Portal to Texas History
Texas Office of Public Utility Counsel Strategic Plan: Fiscal Years 2013-2017 (open access)

Texas Office of Public Utility Counsel Strategic Plan: Fiscal Years 2013-2017

Agency strategic plan for the Texas Office of Public Utility Counsel describing the organization's planned services, activities, and other goals during fiscal years 2013 through 2017.
Date: July 2, 2012
Creator: Texas. Office of Public Utility Counsel.
Object Type: Book
System: The Portal to Texas History
Texas State Pension Review Board Strategic Plan: 2013-2017 (open access)

Texas State Pension Review Board Strategic Plan: 2013-2017

Agency strategic plan for the Texas State Pension Review Board describing the organization's planned services, activities, and other goals during fiscal years 2013 through 2017.
Date: July 2, 2012
Creator: Texas. State Pension Review Board.
Object Type: Report
System: The Portal to Texas History
Improving the J/psi Production Baseline at RHIC and the LHC (open access)

Improving the J/psi Production Baseline at RHIC and the LHC

None
Date: July 2, 2012
Creator: Vogt, R; Nelson, R E & Frawley, A D
Object Type: Article
System: The UNT Digital Library